referring to the compound ( i ) above , there may be mentioned more particularly , compounds in which x represents , hydrogen , a lower alkyl , a lower alkoxy or halogen ; r 1 represents a lower alkyl , a lower alkenyl , a lower alkynyl or aryl ; r 2 represents hydrogen or an optionally substituted lower alkyl , and r 3 represents hydrogen or an optionally substituted lower alkyl or sulfonyl group . referring to the above - mentioned x , r 1 , r 2 r 3 , fluorine , chlorine , bromine and iodine are mentioned as halogen . the lower alkyl includes c 1 - 6 straight - chain or branched saturated hydrocarbon , one or more hydrogen atoms of which may be optionally substituted with halogen , as exemplified by methyl , ethyl , n - propyl , iso - propyl , n - butyl , iso - butyl , n - pentyl , n - hexyl , trifluoromethyl , difluoromethyl , monofluoromethyl , pentafluoroethyl and 2 - trifluoroethyl . the lower alkenyl includes c 2 - 6 straight - chain or branched unsaturated hydrocarbon having a double bond in the molecule , as exemplified by vinyl , allyl , 2 - propenyl , 2 - butenyl , isoprenyl , 2 - pentenyl , 3 - pentenyl , 4 - pentenyl , 2 - hexenyl , 3 - hexenyl , 4 - hexenyl and 5 - hexenyl . the lower alkynyl includes c 2 - 6 straight - chain or branched unsaturated hydrocarbon having a triple bond in the molecule , as exemplified by propargyl , ethynyl , 2 - propynyl , 3 - propynyl , 1 - hexynyl , 2 - hexynyl , 3 - hexynyl and 4 - hexenyl . the lower alkoxy includes functional groups formed by binding the above - mentioned lower alkyl through oxygen atom , as exemplified by c 1 - 6 alkoxy such as methoxy , ethoxy , n - propoxy , n - butoxy , t - butoxy , isopropoxy and trifluoromethoxy . the aryl includes monocyclic or condensed polycyclic aromatic hydrocarbon , as exemplified by phenyl , naphthyl , indenyl and anthryl . as substituents for the optionally substituted lower alkyl group shown by the above - mentioned r 2 , mention is made of , for example , the above - mentioned halogen atoms , aryl or cycloalkyl , heterocyclic ring , aralkyl and acyl . the aryl and heterocyclic ring may optionally be substituted on the lower alkyl through an oxygen , sulfur or nitrogen atom . the cycloalkyl includes 3 - to 7 - membered ring formed with solely carbon atoms , which may optionally have a double bond in the molecule , as exemplified by cyclopropyl , cyclobutyl , cyclopentyl , cyclohexyl , 2 - cyclohexen - 1 - yl and 2 - cyclopenten - l - yl . the heterocyclic ring includes rings which may be 4 - to 7 - membered monocyclic or condensed cyclic rings optionally having unsaturated bonds and having at least one oxygen atom , nitrogen atom , and sulfur atom as the ring - constituting atoms , as exemplified by 2 - thienyl , 3 - thienyl , 2 - pyridyl , 3 - pyridyl , 4 - pyridyl , 2 - furyl , 3 - furyl , 4 - quinolyl , 8 - quinolyl , 4 - isoquinolyl , pyrazinyl , 2 - pyrimidinyl , 1 - pyrrolidinyl , 2 - pyrrolidinyl , 3 - pyrrolidinyl , 2 - imidazolinyl , 3 - imidazolinyl , 1 - piperidyl , 3 - piperidyl , 1 - morpholinyl , 2 - morpholinyl , 3 - morpholinyl , 4 - morpholinyl , 1 - piperazinyl , 2 - piperazinyl , 3 - piperazinyl , 2 - isoindolinyl and 1 - phthalimide . the aralkyl includes functional groups formed by binding one or more aryl groups through lower alkyl , as exemplified by benzyl , phenylethyl , diphenylmethyl , triphenylmethyl , 1 - naphthylmethyl , 2 - naphthylmethyl , 2 - diphenylethyl , 3 - phenylpropyl , 4 - phenylbutyl and 5 - phenylpentyl . the acyl includes functional groups formed by binding the above - mentioned lower alkyl , lower alkenyl , lower alkynyl , aryl , cycloalkyl , aralkyl or heterocyclic ring through carbonyl , phosphoryl or sulfonyl , as exemplified by formyl , acetyl , propionyl , butyryl , valeryl , acryloyl , propiolyl , benzoyl , nicotinoyl , methanesulfonyl , ethanesulfonyl , benzenesulfonyl , toluenesulfonyl and 2 , 4 , 6 - triisopropylbenzenesulfonyl . the above - mentioned aryl , aralkyl and heterocyclic ring may optionally have , at optional positions , one or more substituents which may be the same or different from one another . the optional substituents include the above - mentioned lower alkyl , lower alkenyl , lower alkynyl , cycloalkyl or cyano , nitro , sulfonyl , amino , lower monoalkylamino , lower dialkylamino , arylamino , hydroxyl group , lower alkoxy , halogen , carbamoyl , carboxyl , lower alkoxycarbonyl , lower alkanoyl , mercapto , lower alkylthio , aralkyl ( e . g . benzyl ), aryl ( e . g . phenyl ), lower alkyl carbamoyl , arylcarbamoyl ( e . g . phenylcarbamoyl ), acyl ( e . g . benzoyl , nicotinoyl ), methylenedioxy , heterocyclic ring ( preferably 4 - pyridyl , 2 - pyridyl , 3 - pyridyl and 2 - pyrimidinyl ), or the like . among the compounds ( i ), preferable ones are those wherein x stands for hydrogen ; r 1 stands for a lower alkyl , a lower alkenyl or phenyl ; r 2 stands for hydrogen , a lower alkyl or a group ( ii ) shown by the formula , --( ch 2 ) n ar 4 ( formula 2 ): wherein n is an integer of 1 to 6 , a is a bond or oxygen , sulfur or nitrogen atom , r 4 is hydrogen , phenyl , 1 - phthalimidyl or 4 - benzylpiperazyl ; r 3 stands for hydrogen , 2 , 4 , 6 - triisopropylbenzenesulfonyl or p - toluenesulfonyl and ----- represents a single bond . examples of pharmacologically acceptable acid addition salts include inorganic salts such as hydrochloride , hydrobromide , hydroiodide , sulfate or phosphate , and organic salts such as acetate , oxalate , succinate , ascorbate , maleate , lactate , citrate , fumalate , tartrate , methanesulfonate or benzoate . it is preferable that the compounds ( i ) of this invention have the following steric configuration ; ## str3 ## wherein x , r 1 , r 2 and r 3 have the same meaning as defined above . further , in the compounds included in the present invention , there exist optical isomers , and the optically active compounds obtained by optical resolution of those isomers are also included in the present invention . the compounds ( i ) of this invention can be produced by , for example , subjecting a compound ( iv ) of the formula ## str4 ## wherein x , r 1 , r 2 and r 3 are as defined above to reduction , and , when desired , by further subjecting the reduced compound to reduction , oxidation or / and substitution reaction . the above - mentioned reduction is conducted in an inert solvent by reacting with a metal hydride ( e . g . lithium aluminum hydride , lithium boron hydride , sodium cyano borohydride or diborane ). as the inert solvent , mention is made of ether ( e . g . ethyl ether , tetrahydrofuran or dioxane ), halogenated hydrocarbon ( chloroform , dichloromethane ), hexane , benzene , toluene or the like . the metal hydride is used in an amount of 1 to 20 equivalents , preferably 3 to 12 equivalents , and the reaction temperature ranges from - 70 ° c . to 50 ° c . preferably , the reaction is conducted in an ether solvent at temperatures ranging from 0 ° c . to 30 ° c . with lithium aluminum hydride . further , introduction and modification of substituents can be conducted , for example , in the following manner . the alkylation on the secondary nitrogen atom is conducted with a base ( 1 to 5 equivalents , preferably 2 to 3 equivalents ) in an inert solvent , for example , water , ether ( e . g . tetrahydrofuran , ethyl ether or dioxane ), acetonitrile , n , n - dimethylformamide and halogenated hydrocarbon , singly or a mixture of them . examples of the base include potassium carbonate , sodium carbonate , sodium hydride , potassium hydride , sodium ethoxide and potassium - t - butoxide , and the reaction temperature ranges from - 50 ° c . to 80 ° c ., preferably from 0 ° c . to 30 ° c . the acylation on the secondary nitrogen atom is conducted by allowing a reactive derivative of chlorine , acetic acid or bromoacetic acid ( e . g . chloroacetyl chloride , bromoacetyl bromide or bromoacetyl chloride ) to react in an inert solvent . preferable examples of the inert solvent include water , ether , halogenated hydrocarbon , acetonitrile and n , n - dimethylformamide , and they are used singly or as a mixture . depending on the specific case , a base is added to the reaction system , as exemplified by inorganic bases ( sodium carbonate , sodium hydrogencarbonate , sodium hydroxide , potassium carbonate , etc .) or organic bases ( triethylamine , pyridine , 4 , 4 - dimethylamino pyridine , diisopropyl ethylamine , etc .). the amount of the base ranges from 1 to 10 equivalents , preferably from 1 to 3 equivalents . the reaction temperature ranges from 0 ° c . to 50 ° c ., preferably from 10 ° c . to 30 ° c . the elimination of a base shown by r 3 ( e . g . sulfonyl derivatives ) can be conducted by basic hydrolysis , acid hydrolysis or reductive elimination , and the last one is preferable . the reaction is conducted by processing with sodium naphthalene prepared from metallic sodium and naphthalene or a metal hydride ( e . g . lithium aluminum hydride ) in an inert solvent ( e . g . ether , toluene or hexane , singly or as a mixture ). the amount of the reducing agent ranges desirably from 5 to 20 equivalents . as the inert solvent , tetrahydrofuran is preferably employed , and the reaction temperature ranges from 0 ° c . to 40 ° c ., preferably around room temperature . the starting compound ( formula 4 ) can be produced from 3 , 4 - dihydrobenzo [ cd ] indol - 5 ( 1h )- one ( j . chem . soc ., p . 1438 , 1973 ) or a derivative thereof by the following steps in accordance with the method described by bowman ( j . chem . soc ., p . 1121 , 1972 ). ## str5 ## wherein x , r 1 , r 2 and r 3 are of the same meaning as defined above . this step is a nucleophilic addition reaction on the ketone group . the reaction is conducted by reacting with an organometallic reagent represented by r 1 - m ( m stands for li , na , mgbr , mgcl or cecl 2 ) in an inert solvent . as the inert solvent , use is made of tetrahydrofuran , ethyl ether , dimethoxyethane or dioxane , singly or as a mixture . the amount of the organometal ranges from 1 to 20 equivalents , preferably from 4 to 10 equivalents . the reaction temperature ranges from - 100 ° c . to 70 ° c ., preferably from - 20 ° c . to 25 ° c . this is a chloroacetylation reaction , which is conducted in accordance with the method of lucien nedelec et al . ( jp - a - 133292 / 1981 ). namely , the reaction with chloroacetyl chloride ( preferably 1 to 2 equivalents ) is conducted in an inert solvent in the presence of an excess amount of a base . as the inert solvent , use is made of water , ether ( ethyl ether , tetrahydrofuran or dioxane ), halogenated hydrocarbon ( chloroform , dichloromethane or dichloroethane ), ethyl acetate , acetonitrile and n , n - dimethylformamide , singly or as a mixture . the reaction is conducted at temperatures ranging from 0 ° c . to 50 ° c . preferable bases are exemplified by potassium carbonate , sodium carbonate , sodium hydroxide and potassium hydroxide , and , preferable inert solvents include tetrahydrofuran , chloroform and dichloromethane . preferable reaction temperatures range from 0 ° c . to 30 ° c . this is intramolecular cyclization . the reaction is conducted by processing with a base ( 1 to 5 equivalents , preferably 2 to 3 equivalents ) in an inert solvent , for example , ether ( e . g . tetrahydrofuran , ethyl ether or dioxane ), acetonitrile , n , n - dimethylformamide or halogenated hydrocarbon , singly or as a mixture . preferable examples of the base include inorganic strong bases ( e . g . sodium hydride , potassium hydride , sodium hydroxide , potassium hydroxide , sodium ethoxide or potassium - t - butoxide ), an especially preferable one being sodium hydride . preferable examples of the inert solvent include tetrahydrofuran , acetonitrile and n , n - dimethylformamide , which can be used singly or as a mixture . the reaction temperatures range preferably from 0 ° c . to 40 ° c . optically active compounds can be produced by per se known means , more specifically stating , by using an optically active synthetic intermediate or by subjecting the mixture of the ultimate racemic compounds to optical resolution . as the optical resolution , mention is made of a method which comprises allowing an optically active acid and salt to be formed , followed by separating them by fractional recrystallization ; a method which comprises subjecting a racemic compound or a salt thereof to chromatography using a column for separation of optically active compounds ( chiral column ), for example , enantio - ovm ( toso co ., ltd . ), followed by developing with a solvent such as water , various buffers ( e . g . phosphate buffer ), alcoholic solvents ( e . g . methanol or ethanol ), nitrile type solvents ( e . g . acetonitrile ), hexane or ethyl ether , singly or as a mixture ; and a method which comprises subjecting a mixture of racemic compounds to condensation , by a conventional method ( e . g . acid chloride method ), with , for example , mpta ( α - methoxy - α -( trifluoromethyl ) phenylacetic acid or menthoxyacetic acid to give a mixture of diastereomers of amido - compound , which is subjected to separation and purification by means of fractional recrystallization or a silica gel chromatography , followed by subjecting the separated and purified product to acid hydrolysis or basic hydrolysis . the compounds ( formula 1 ) of this invention are antagonistic against symptoms of pain or the like induced by substance - p , and show analgesic activity in animals . the toxicity of the compounds of this invention is low ( acute toxicity ( ld 50 ), when compound 2 of the examples is orally administered to rats , is not less than 100 mg / kg ) with less undesirable side effects . therefore , the compounds of this invention and their salts can be used for prophylaxis or therapy of diseases including pain due to bone diseases ( arthritis , rheumatic fever , osteoporosis ), pain induced by cancer or the like , lumbago , postoperative pain , neuralgia , pain induced by inflammatory diseases , pain caused by tooth extraction , tooth - ache and pain due to burn trauma , as well as neurosis ( e . g . anxiety neurosis , depression , mental disorder ), somnipathy or the like . since the compounds of this invention act on a neurotransmitting system such as dopamine or norepinephrine , they can be used also as prophylactic and therapeutic drugs for circulatory diseases ( e . g . hypertension ). the compounds of this invention and their salts can be safely administered orally or non - orally as they are or as pharmaceutical compositions by being admixed with a pharmaceutically acceptable carrier , vehicle or diluent , e . g . tablets ( including sugar - coated tablets , film - coated tablets ), powders , granules , capsules ( including soft capsules ), liquids , injections , suppositories and sustained - release drugs . while the dosage of the compounds and their salts of this invention varies with , for example , the subjects , administration routes and diseases to be treated , it ranges conveniently from 0 . 1 to 500 mg , preferably 1 to 100 mg , in the case of oral administration to a human adult as an analgesic agent . in the following , na 2 so 4 means sodium sulfate , lah means lithium aluminum hydride , thf means tetrahydrofuran , nh 4 cl means ammonium chloride , dce means 1 , 2 - dichloroethane , kbr means potassium bromide , dmf means n , n - dimethylformamide and cdcl 3 means deuterochloroform . in thf ( 640 ml )- dmf ( 130 ml ) was dissolved ethyl 3 -( 5 - methoxy - 1h - indol - 3 - yl ) propionic acid ( 99 . 3 g , 0 . 4 mol ). to the solution was added in limited amounts , under ice - cooling , a suspension of 60 % sodium hydride in oil ( 18 . 4 g , 0 . 46 mol ) in thf ( 50 ml )- dmf ( 10 ml ). the mixture was stirred at room temperature for one hour , and the mixture was again cooled with ice . to the mixture was gradually added p - toluenesulfonyl chloride ( 83 . 9 g , 0 . 44 mmol ), followed by stirring for a further 3 hours at room temperature . the reaction mixture was poured into an ice - saturated nh 4 cl solution ( 180 ml ). the upper layer was subjected to extraction with ethyl acetate ( 100 ml + 500 ml ). the extract solution was washed with a saturated aqueous saline solution ( 300 ml × 2 ), followed by drying over na 2 so 4 . the residue was purified by means of silica gel chromatography ( eluent : hexane - ethyl acetate ( 2 : 1 )) and then were added hydrochloric acid ( 100 ml ) and acetic acid ( 400 ml ), and was refluxed for 1 hour . the reaction mixture was concentrated and the resulting crystals were washed with water , dried under reduced pressure and washed with methanol - isopropyl ether ( 1 : 3 ) to obtain the title compound ( 54 . 1 g : m . p . 172 °- 174 ° c .) to a dce ( 600 ml ) solution of 3 -( 5 - methoxy - 1 - p - toluenesulfonyl - indol - 3 - yl ) propionic acid ( 28 . 9 g , 77 mmol ) was added , while stirring under ice - cooling , ( cocl ) 2 ( 8 . 3 ml , 95 mmol ), and the mixture was stirred for about 2 . 5 hours at room temperature . the reaction mixture was concentrated , and the residue was dissolved in dce ( 100 ml ). the solution was added to a suspension of aluminum chloride powder ( 33 . 9 g , 254 mmol ) in dce ( 430 ml ) at 5 ° c . taking 20 minutes . the mixture was left standing as it was at 5 ° c . for one hour , then stirred for 2 . 5 hours at room temperature . to the reaction mixture were added , under ice - cooling , dimethoxyethane ( 300 ml ) and water ( 300 ml ). resulting precipitates were filtered off , then the organic layer was separated . the aqueous layer was subjected to extraction with chloroform ( 200 ml ). the extract solution was combined with the organic layer , which was washed with an aqueous saline solution . the resultant organic layer was dried ( anhydrous sodium sulfate ), then the solvent was distilled off under reduced pressure to leave 25 g of crude crystals . the crude crystalline product was subjected to silica gel column chromatography , eluting with chloroform , to obtain crystals , followed by recrystallization from chloroform - n - hexane to afford the title compound ( m . p . 210 °- 211 ° c .). 1 h - nmr ( cdcl 3 , 200 mhz ) δ : 2 . 36 ( s , 3h ), 2 . 81 ( t , j = 7hz , 2h ), 3 . 13 ( t , j = 7 hz , 2h ), 6 . 8 - 8 . 0 ( m , 7h ) ppm . ir ( kbr ): 3095 , 1643 cm - 1 . anal : calcd . for c 18 h 15 no 4 s ; c 63 . 33 %, h 4 . 43 %, n 4 . 10 % found ; c 63 . 22 %, h , 4 . 39 %, n 4 . 08 %. to a solution of the crude crystals ( 42 g ) obtained in reference example 2 in n , n - dimethylformamide ( 400 ml ) were added potassium carbonate ( 60 . 7 g , 440 mmol ) and methyl iodide ( 39 . 7 g , 280 mmol ). the mixture was stirred for about one hour at room temperature , and to the mixture were further added potassium carbonate ( 20 . 0 g , 140 mmol ) and methyl iodide ( 15 . 0 g , 110 mmol ). the mixture was stirred for an additional one hour at room temperature . to the reaction mixture was then added water ( 1000 ml ), which was subjected to extraction with ethyl acetate ( 400 ml × 2 ). the extract solution was washed with an aqueous saline solution and dried ( anhydrous na 2 so 4 ). the solvent was then distilled off under reduced pressure . the residue was subjected to silica gel column chromatography , eluting with n - hexane - ethyl acetate ( 1 : 1 ) to afford the title compound ( 48 %). 1 h - nmr ( cdcl 3 , 200 mhz ) δ : 2 . 36 ( s , 3h ), 2 . 78 ( t , j = 7 hz , 2h ), 3 . 10 ( t , j = 7 hz , 2h ), 3 . 96 ( s , 3h ), 6 . 9 - 8 . 1 ( m , 7h ), ppm . ir ( kbr ): 2940 , 1682 cm - 1 . anal : calcd . for c 19 h 17 no 4 s ; c 64 . 21 %, h 4 . 82 %, n 3 . 94 % found : c 63 . 54 %, h 4 . 97 %, n 3 . 93 % to a solution of 3 , 4 - dihydro - 6 - methoxy - 1 - p - toluene sulfonylbenz [ cd ] indol - 5 ( 1h )- one ( 5 . 1 g , 14 . 3 mmol ) in thf ( 60 ml ) was gradually added , under stirring at - 45 ° c ., a solution of me 3 phnbr 3 ( 5 . 38 g 14 . 3 mmol ) in thf ( 20 ml ), and the mixture was warmed up to 10 ° c . after completion of the reaction , insolubles were filtered off . the filtrate was subjected to distillation under reduced pressure to leave 7 . 5 g ( 100 %) of 3 , 4 - dihydro - 4 - bromo - 1 -( p - toluenesulfonyl ) benz [ cd ] indol - 5 - one as crude crystals . then , this crude crystalline product was dissolved in n , n - dimethylformamide - acetic acid ( 140 ml - 2 ml ). to the solution was gradually added , under stirring at - 28 ° c ., an aqueous solution ( 14 ml ) of sodium azide ( 1 . 86 g , 28 . 6 mmol ) to raise the temperature to about 0 ° c . after completion of the reaction , the reaction mixture was added to ice - water ( 300 ml ). resulting crystalline precipitates were collected by filtration and , then dissolved in ethyl acetate , and the solution was shaken to make two layers . the organic layer was washed with an aqueous saline solution and dried ( anhydrous na 2 so 4 ). the solvent was then distilled off under reduced pressure to leave 5 . 67 g ( 100 %) of the title compound as crude crystals . a portion of the crystalline product was recrystallized from ethyl acetate to afford the product , m . p . 147 °- 148 ° c . 1 h - nmr ( cdcl 3 , 200 mhz ) δ2 . 36 ( s , 3h ), 3 . 02 ( ddd , j = 20 12 , 2 hz , 1h ), 3 . 33 ( dd , j = 20 , 7 hz , 1h ), 4 . 00 ( s , 3h ), 4 . 35 ( dd , j = 12 , 7 hz , 1h ), 6 . 9 - 8 . 1 ( m , 7h ) ppm . ir ( kbr ): 2104 , 1688 cm - 1 . anal : calcd for c 19 h 16 n 4 o 4 s . 0 . 3h 2 o ; c 56 . 78 %, h 3 . 83 %, n 13 . 82 %% found ; c 57 . 03 %, h 3 . 91 %, n 13 . 42 %. to a solution of 4 - azido - 3 , 4 - dihydro - 6 - methoxy - 1 - p - toluenesulfonylbenz [ cd ] indol - 5 ( 1h )- one ( 5 . 36 g , 13 . 5 mmol ) in thf ( 130 ml ) were added acetic anhydride ( 2 . 76 g , 27 . 0 mmol ) and 10 % palladium - carbon ( 2 . 2 g ). the mixture was stirred for 10 hours at room temperature under hydrogen atmosphere of 3 atmospheres pressure . after completion of the reaction , the catalyst was filtered off . the filtrate was subjected to distillation under reduced pressure . the residue was washed with ethyl ether to give 5 . 03 g ( 90 %) of the title compound as a crude crystalline product . a portion of the product was recrystallized from chloroform - n - hexane to afford a pure product ( m . p . 214 °- 217 ° c .). 1 h - nmr ( cdcl 3 , 200 mhz ) δ : 2 . 37 ( s , 3h ), 2 . 73 ( ddd , j = 18 , 14 , 2 , 1h ), 3 . 85 ( dd , j = 18 , 10 , 1h ), 3 . 96 ( s , 3h ), 4 . 73 ( ddd , j = 14 , 10 , 6 , 1h ), 6 . 78 ( br d , 1h ), 6 . 9 - 8 . 1 ( m , 7h ) ppm . ir ( kbr ): 3340 , 1682 , 1634 cm - 1 . anal : calcd for c 21 h 20 n 2 o 5 s . 1 . 0h 2 o : c 58 . 59 %, n 6 . 51 % found ; c 59 . 02 %, h 4 . 88 %, n 6 . 42 %. to a suspension of 4 - azido - 3 , 4 - dihydro - 6 - methoxy - 1 - p - toluenesulfonylbenz [ cd ] indol - 5 ( 1h )- one ( 2 . 0 g , 5 . 0 mmol ) in ethanol ( 100 mmol ) were added conc . hydrochloric acid ( 2 . 5 ml ) and 10 % palladium - carbon ( 400 mg ). the mixture was stirred for 4 hours at room temperature under hydrogen atmosphere of 3 atmospheres pressure . after completion of the reaction , the catalyst was filtered off . the filtrate was subjected to distillation , and the residue was washed with ethyl ether to give 1 . 6 g ( 80 %) of crude crystals of the title compound . 1 h - nmr ( dmso - d 6 , 200 mhz ) δ : 3 . 12 ( t , j = 10 hz , 1h ), 3 . 89 ( s , 3h ), 4 . 44 ( m , 1h ), 7 . 2 - 8 . 1 ( m , 7h ), 8 . 50 ( br s , 2h ) ppm . ir ( kbr ): 1687 cm - 1 . anal : calcd . for c 19 h 19 n 2 o 4 scl . 3 . 0h 2 o ; c 49 . 51 %, h 5 . 47 %, n 6 . 08 % found : c 49 . 57 %, h 5 . 22 %, n 5 . 95 %. to a suspension of 4 - amino - 3 , 4 - dihydro - 6 - methoxy - 1 - p - toluenesulfonylbenz [ cd ] indol - 5 ( 1h )- one hydrochloride ( 1 . 45 g , 3 . 50 mmol ) in dichloromethane ( 30 ml ) were added , while stirring under ice - cooling , anhydrous trifluoroacetic acid ( 0 . 61 ml , 4 . 27 mmol ) and triethylamine ( 1 . 18 ml , 16 . 1 mmol ). the mixture was stirred for 30 minutes as it was . after completion of the reaction , the reaction mixture was subjected to distillation under reduced pressure . the residue was shaken together with ethyl acetate ( 40 ml )- 1n hcl ( 30 ml ) to allow two layers to be formed . the organic layer was washed with an aqueous saline solution and dried ( anhydrous na 2 so 4 ). the solvent was distilled off under reduced pressure . the residue was recrystallized from ethyl acetate - n - hexane to afford the title compound ( 1 . 2 g , 73 %, m . p . 189 °- 190 ° c .) 1 h - nmr ( cdcl 3 ), 200 mhz ) δ : 2 . 84 ( ddd , j = 14 , 13 , 2 hz , 1h ), 3 . 98 ( s , 3h ), 4 . 70 ( m , 1h ), 7 . 0 - 8 . 2 ( m , 7h ) ppm . ir ( kbr ): 3355 , 1732 , 1690 cm - 1 . anal : calcd . for c 21 h 17 n 2 o 5 sf 3 . 0 . 5h 2 o ; c 53 . 05 %, h 3 . 82 %, n 5 . 89 % found ; c 52 . 96 %, h 3 . 97 %, n 5 . 80 %. sodium hydride ( 60 % oil 19 . 03 g 0 . 476 mol ) was washed with n - hexane , and was suspended in dmf ( 500 ml ). to the suspension was gradually added a solution of ethyl indole - 3 - propionate acid ( 64 . 79 g 0 . 317 mol ) in dmf ( 100 ml ). the mixture was stirred for one hour at 40 °- 50 ° c ., and to the mixture was gradually added , under ice - cooling , 2 , 4 , 6 - triisopropylphenylsulfonyl chloride ( 115 . 25 g , 0 . 38 mol ), followed by stirring for one hour at room temperature . to the reaction mixture was added water ( 150 ml ), and the mixture was subjected to extraction with n - hexane ( 500 ml ). the extract solution was washed with water ( 100 ml ) and dried over anhydrous magnesium sulfate . the solvent was distilled off under reduced pressure to to leave the title compound ( 152 g ). 1 h - nmr ( cdcl 3 , 200 mhz ) δ : 1 . 09 ( d , j = 7 hz , 12h ), 1 . 24 ( d , j = 7 hz , 6h ), 2 . 69 ( t , j = 7 hz , 2h ), 2 . 90 ( hep , j = 7 hz , 1h ), 3 . 04 ( t , j = 7 hz , 2h ), 3 . 65 ( s , 3h ), 4 . 16 ( hep , j = 7 hz , 2h ), 7 . 2 - 7 . 6 ( m , 7h ) ppm . ir ( kbr ): 2960 , 1740 cm - . in acetic acid ( 200 ml ) was dissolved methyl 1 -( 2 , 4 , 6 - triisopropylphenylsulfonyl )- indole propionate ( 152 g ). to the solution was added conc . hydrochloric acid ( 150 ml ), and the mixture was refluxed under heating for two hours . the reaction mixture was concentrated under reduced pressure , and was added to a saturated aqueous solution of sodium hydrogencarbonate to render the ph to 5 - 6 , followed by extraction with dichloromethane ( 1000 ml ). the extract solution was washed with water ( 500 ml ) and dried over anhydrous magnesium sulfate . the solvent was distilled off under reduced pressure to leave the title compound ( 153 g ) as an oily product . 1 h - nmr ( cdcl 3 , 200 mhz ) δ : 1 . 09 ( d , j = 7 hz , 12h ), 1 . 24 ( d , j = 7 hz , 6h ), 2 . 76 ( t , j = 7 hz , 2h ), 2 . 90 ( hep , j = 7 hz , 1h ), 3 . 06 ( t , j = 7 hz , 2h ), 4 . 16 ( hep , j = 7 hz , 2h ), 7 . 2 - 7 . 6 ( m , 7h ) ppm . ir ( kbr ): 2955 , 1712 cm - 1 . to a solution of 1 -( 2 , 4 , 6 - triisopropylphenylsulfonyl )- indole - 3 - propionic acid ( 76 . 22 g ) in chloroform ( 500 ml ) was added dropwise thionyl chloride ( 28 . 9 ml ) at room temperature taking about 10 minutes . the mixture was stirred for one hour at 60 ° c . after completion of the reaction , the solvent was distilled off under reduced pressure . to the residue was again added chloroform , followed by concentration under reduced pressure . the concentrate was dissolved in dichloroethane ( 900 ml ). to the solution was gradually added , under ice - cooling , crushed aluminum chloride ( 58 . 4 g ). the mixture was stirred for 30 minutes , and was added to a mixture of 1n hydrochloric acid ( 1000 ml ) and ice ( 200 g ), followed by extraction with chloroform ( 900 ml ). the extract solution was washed with water ( 900 ml ), dried over anhydrous magnesium sulfate , and was concentrated under reduced pressure . the concentrate was purified by means of a column chromatography ( eluted with ethyl acetate : n - hexane = 1 : 4 ), followed by recrystallization from ethyl acetate - hexane to afford the title compound ( 43 . 86 g , m . p . 124 °- 130 ° c .). 1 h - nmr ( cdcl 3 , 200 mhz ) δ : 1 . 10 ( d , j = 7 hz , 12h ), 1 . 25 ( d , j = 7 hz , 6h ), 2 . 87 ( t , j = 7 hz , 2h ), 3 . 21 ( t , j = 7 hz , 2h ), 4 . 18 ( hep , j = 7 hz , 1h ), 7 . 2 - 7 . 4 ( m , 4h ), 7 . 68 ( d , j = 9 hz , 2h ) ppm . to a solution of 3 , 4 - dihydro - 1 -( 2 , 4 , 6 - triisopropylphenylsulfonyl ) benz [ cd ] indol - 5 ( 1h )- one ( 5 . 1 g , 14 . 3 mmol .) in thf ( 60 ml ) was gradually added under stirring at - 45 ° c . a solution of me 3 phbr 3 ( 5 . 38 g , 14 . 3 mmol .) in thf ( 20 ml ) to raise the temperature of the reaction system up to 10 ° c . after completion of the reaction , insolubles were filtered off , and the filtrate was subjected to distillation under reduced pressure to leave 7 . 5 g ( 100 %) of 3 , 4 - dihydro - 4 - bromo - 1 -( 2 , 4 , 6 - triisopropylphenylsulfonyl ) benz [ cd ] indol - 5 ( 1h )- one as a crude crystalline product . then , this crude crystalline product was dissolved in a mixture of n , n - dimethylformamide ( 140 ml ) and acetic acid ( 2 ml ). to the solution was gradually added , while stirring at - 28 ° c ., an aqueous solution ( 14 ml ) of sodium azide ( 1 . 86 g , 28 . 6 mmol .) to raise the temperature of the reaction system up to near 0 ° c . after completion of the reaction , the reaction mixture was added to ice - water ( 300 ml ). crystals then precipitated were collected by filtration and dissolved in ethyl acetate . the solution was shaken to allow two layers to be formed . the organic layer was washed with an aqueous saline solution , and was then dried ( anhydrous na 2 so 4 ). the solvent was distilled off under reduced pressure to leave 5 . 67 g ( 100 %) of the title compound as a crude crystalline product . a portion of the product was recrystallized from ethyl acetate to give a product , m . p . 129 °- 132 ° c . 1 h - nmr ( cdcl 3 , 200 mhz ) δ : 1 . 12 ( d , j = 7 hz , 12h ), 1 . 28 ( d , j = 7 hz , 6h ), 2 . 94 ( t , j = 7 hz , 1h ), 3 . 16 ( ddd , j = 16 , 11 , 2 hz , 1h ), 3 . 48 ( dd , j = 16 , 7 hz , 1h ), 4 . 18 ( hep , j = 7 hz , 2h ), 4 . 49 ( dd , j = 11 , 7 hz , 1h ), 7 . 21 ( s , 2h ), 7 . 31 ( s , 1h ), 7 . 40 ( t , j = 8 hz , 1h ), 7 . 76 ( d , j = 8 hz , 1h × 2 ) ppm . ir ( kbr ): 2970 , 2110 , 1695 , 1600 cm - 1 . anal : calcd for c 26 h 30 n 4 o 3 s . 0 . 5h 2 o ; c 64 . 04 %, h 6 . 41 %, n 11 . 49 % found ; c 64 . 55 %, h 6 . 27 %, n 11 . 20 %. a solution of 4 - azido - 3 , 4 - dihydro - 1 -( 2 , 4 , 6 - triisopropylphenylsulfonyl ) benz [ cd ] indol - 5 ( 1h )- one ( 5 . 36 g , 11 . 2 mmol ), acetic anhydride ( 2 . 29 g , 22 . 4 mmol ) and 10 % pd - c ( 1 . 7 g in thf ( 60 ml ) was stirred for 4 hours at 4 hours under 4 atmospheres pressure under hydrogen atmosphere . after completion of the reaction , the catalyst was filtered off . the filtrate was concentrated under reduced pressure . to the concentrate was added isopropyl ether to give 5 . 03 g ( 91 %) of the title compound . m . p . : 159 °- 162 ° c . 1 h - nmr ( cdcl 3 , 200 mhz ) δ : 1 . 07 , 1 . 10 , 1 . 26 ( d , j = 7 hz , 6h × 3 ), 2 . 13 ( s , 3h ), 2 . 85 ( ddd , j = 15 , 12 , 2 hz , 1h ), 2 . 92 * hep , j = 7 hz , 1h ), 3 . 95 ( dd , j = 15 , 7 hz , 1h ), 4 . 16 ( hep , j = 7 hz , 2h ), 4 . 85 ( ddd , j = 12 , 7 , 6 hz , 1h ), 6 . 71 ( d , j = 6 hz , 1h ), 7 . 19 ( s , 2h ), 7 . 23 ( d , j = 2 hz , 1h ), 7 . 38 ( t , j = 8 hz ), 1h ), 7 . 68 , 7 . 76 ( d , j = 8 hz , 1h ) ppm . ir ( kbr ); 3420 , 3380 , 2960 , 1690 , 1875 , 1600 cm - 1 . anal : calcd . for c 28 h 34 n 2 o 4 c 67 . 99 %, h 6 . 93 %, n 5 . 66 % found ; c 67 . 72 %, h 7 . 07 %, n 5 . 59 %. in 100 ml of ethanol was suspended 1 . 00 g ( 2 . 09 mmol ) of 4 - azido - 3 , 4 - dihydro - 1 -( 2 , 4 , 6 - triisopropylphenylsulfonyl ) benz [ cd ] indol - 5 ( 1h )- one , to which was added 1 . 0 ml of conc . hcl . the mixture was warmed to make a solution , to which was added 0 . 10 g of 10 % pd - c ( hydrous ), followed by hydrogenation for one hour at room temperature . the reaction mixture was subjected to filtration to remove the catalyst . the filtrate was washed with ethanol and concentrated under reduced pressure . to the concentrate was added ether , and the mixture was concentrated twice , followed by crystallization from ether . the crystalline product was collected by filtration , washed with ether and dried under reduced pressure to afford 0 . 87 g of a 4 - amino derivative . the yield was 85 %. 0 . 40 g ( 0 . 818 mmol ) of the 4 - amino derivative obtained as above was dissolved in 6 ml of methylene chloride . to the solution was added , under ice - cooling , 0 . 14 ml ( 1 . 2 equivalent ) of anhydrous trifluoroacetic acid and 0 . 27 ml of triethylamine . the mixture was stirred for 15 minutes , and was then concentrated under reduced pressure . to the concentrate were added ethyl acetate and 1n hcl , and the mixture was shaken to allow two layers to be formed . the organic layer was dried over anhydrous magnesium sulfate , and was concentrated under reduced pressure . the concentrate was purified by means of a silica gel column chromatography ( elution with hexane ethyl acetate 9 : 1 ). fractions were combined and concentrated , and there was added a small volume of hexane to cause crystallization . the crystalline product was dried under reduced pressure to afford 0 . 23 g of the title compound . the yield was 51 %. m . p . : 155 °- 156 ° c . 1 h - nmr ( cdcl 3 , 200 mhz ) δ : 1 . 09 , 1 . 12 , 1 . 26 ( d , j = 7 hz , 6h × 3 ), 2 . 93 ( hep , j = 7 hz , 1h ), 2 . 96 ( ddd , 15 , 12 , 2 hz , 1h ), 4 . 04 ( dd , j = 15 , 7 hz , 1h ), 4 . 15 ( hep , j = 7 hz , 2h ), 4 . 83 ( ddd , j = 12 , 7 , 6 hz , 1h ), 7 . 21 ( s , 2h ), 7 . 29 ( d , j = 2 hz , 1h ), 7 . 41 ( t , j = 8 hz , 1h ), 7 . 67 ( d , j = 6 hz , 1h ), 7 . 73 , 7 . 8 ( d , j = 8 hz , 1h ) ppm . ir ( kbr ): 2950 , 1730 , 1685 , 1600 cm - 1 . anal : calcd for c 28 h 31 f 3 n 2 o 4 s ; c 61 . 30 % h 5 . 70 %, n 5 . 11 % found ; c 61 . 24 %, h 5 . 80 %, n 4 . 95 %. solution of 1m vinyl magnesium bromide in thf ( 8 equivalents relative ketone compound ) at - 40 ° c . in argon streams . the mixture was warmed up to room temperature , and was stirred for 4 hours at the same temperature range . the reaction mixture was added to an ice - cooled saturated aqueous solution of nh 4 cl . the mixture was subjected to extraction with ethyl acetate . the extract was washed with an aqueous saline solution and dried ( anhydrous na 2 so 4 ). the solvent was distilled off under reduced pressure . the residue was subjected to a silica gel column chromatography , eluting with n - hexane - ethyl acetate ( 1 : 2 ) to give 0 . 75 g ( 24 %) of the title compound as an amorphous crystalline product . 1 h - nmr ( cdcl 3 , 200 mhz ) δ : 1 . 08 ( d , j = 7 hz , 12h ), 1 . 24 ( d , j = 7 hz , 6h ), 2 . 00 ( s , 3h ), 2 . 6 - 3 . 0 ( m , 2h ), 3 . 18 ( dd , j = 16 , 5 hz , 1h ), 4 . 15 ( hep , j = 7 hz , 2h ), 4 . 51 ( dt , j = 7 , 4 hz , 1h ), 5 . 31 ( dd , j = 17 , 10 hz , 1h ), 5 . 50 ( d , j = 10 hz , 1h ), 5 . 73 ( dd , j = 17 , 10 hz , 1h ), 7 . 1 - 7 . 4 ( m , 6h ) ppm . ir ( kbr ): 3390 , 2960 , 1657 cm - 1 . anal : calcd for c 30 h 38 n 2 o 4 s . h 2 o ; c 66 . 64 %, h 7 . 4 %, n 5 . 18 % found ; c 66 . 35 %, h 7 . 2 %, n 4 . 7 %. lah ( 5 equivalents ) was allowed to react with a thf solution ( 14 . 3 ml ) of 4 - acetylamino - 3 , 4 - dihydro - 5 - hydroxy - 1 -( 2 , 4 , 6 - triisopropylphenylsulfonyl )- 5 - vinyl - 5h - benz [ cd ] indole ( 750 mg , 1 . 43 mmol ) and was refluxed for 3 hours to complete the reaction . ethanol was added to the reaction mixture to inactivate the excess amount of lah and was added aqueous solution of na 2 so 4 . the reaction mixture was subjected to extraction with ethyl acetate . the extract was washed with an aqueous saline solution and , then , dried ( anhydrous na 2 so 4 ) and concentrated under reduced pressure . the residue thus obtained was subjected to silica gel column chromatography , eluting with ethyl acetate to afford 275 mg ( 38 %) of the title compound as an oily product . 1 h - nmr ( cdcl 3 , 200 mhz ) δ : 1 . 11 , 1 . 12 ( d , j = 7 hz , 6h × 2 ), 1 . 25 ( d , j = 7 hz , 6h ), 2 . 4 - 3 . 1 ( m , 5h ), 3 . 30 ( dd , j = 15 , 4 hz , 1h ), 4 . 18 ( hept , j = 7 hz , 2h ), 5 . 0 - 5 . 3 ( m , 2h ), 5 . 92 ( dd , j = 17 , 11 hz , 1h ), 7 . 1 - 7 . 4 ( m , 6h ) ppm . to a solution of 3 , 4 - dihydro - 4 - ethylamino - 5 - hydroxy - 1 -( 2 , 4 , 6 - triisopropylphenylsulfonyl )- 5 - vinyl5h - benz [ cd ] indole ( 270 mg , 0 . 53 mmol ) in ethyl acetate ( 5 . 3 ml ) was added a saturated aqueous solution of sodium carbonate ( 5 . 3 ml ). to the mixture was added , while vigorously stirring , chloroacetyl chloride ( 1 . 2 equivalent ). after completion of the reaction , the organic layer was separated and washed with an aqueous saline solution , followed by drying ( anhydrous na 2 so 4 ). the solvent was distilled off under reduced pressure to leave the residue ( 260 mg ). to a solution of the chloroacetyl compound in thf - acetonitrile ( 5 : 1 , 5ml ) was added , while stirring under ice - cooling , 60 % sodium hydride ( 2 equivalents ), and the mixture was stirred for 2 - 3 hours at room temperature . after completion of the reaction , the reaction mixture was added to a saturated aqueous solution of nh 4 cl cooled with ice , followed by extraction with ethyl acetate . the extract solution was dried ( anhydrous na 2 so 4 ), then the solvent was distilled off . the residue was subjected to silica gel column chromatography , eluting with n - hexane - ethyl acetate ( 3 : 1 ) to afford 208 mg ( 86 %) of the title compound as an amorphous crystalline product . 1 h - nmr ( cdcl 3 , 200mhz ) δ : 1 . 07 ( d , j = 7 hz , 12h ), 1 . 24 ( d , j = 7 hz , 6h ), 2 . 7 - 3 . 0 ( m , 2h ), 3 . 35 ( m , 2h ), 3 . 9 - 4 . 2 ( m , 4h ), 4 . 40 , 4 . 48 ( d , j = 17 hz , 1h × 2 ), 4 . 91 ( d , j = 18 hz , 1h ), 5 . 36 ( d , j = 11 hz , 1h ), 6 . 24 ( dd , j = 18 , 11 hz , 1h ), 7 . 1 - 7 . 4 ( m , 6h ) ppm . ir ( kbr ): 2962 , 1662 cm - 1 . anal : calcd for c 32 h 40 n 2 o 4 s . 0 . 5h 2 o ; c 68 . 91 %, h 7878 . 41 %, n 5 . 02 % found ; c 68 . 86 %, h 7 . 45 %, n 4 . 69 %. to a solution of trans - 4 , 6 , 6a , 7 , 9 , 10a - hexahydro - 7 - ethyl - 4 -( 2 , 4 , 6 - triisopropylphenylsulfonyl )- 10a - vinyl - indolo [ 3 , 4 - gh ][ 1 . 4 ] benzoxazin - 8 - one ( 200 mg , 0 . 36 mmol ) in thf ( 3 . 6 ml ) was added lah ( 3 equivalents ) while stirring under ice - cooling , and the mixture was heated for 3 hours under reflux . after completion of the reaction , ethanol was added to the reaction mixture to inactivate the excess amount of lah , followed by addition to an ice - cooled saturated aqueous solution of na 2 so 4 . the mixture was subjected to extraction with ethyl acetate . the extract solution was washed with an aqueous saline solution and , then , dried ( anhydrous na 2 so 4 ). the solvent was distilled off under reduced pressure , and the residue was subjected to silica gel column chromatography , eluting with n - hexane - ethyl acetate ( 17 : 3 ) to afford 103 mg ( 54 %) of the title compound as an amorphous crystalline product . 1 h - nmr ( cdcl 3 , 200mhz ) δ : 1 . 06 , 1 . 07 ( d , j = 7 hz , 6h × 2 ), 1 . 23 ( d , j = 7 hz , 6h ), 2 . 5 - 3 . 0 ( m , 7h ), 3 . 21 ( dd , j = 15 , 4 hz , 1h ), 3 . 80 ( dd , j = 11 , 3 hz , 1h ), 4 . 1 - 4 . 4 ( m , 3h ), 4 . 76 ( dd , j = 18 , 2 hz , 1h ), 5 . 23 ( dd , j = 11 , 2 hz , 1h ), 6 . 62 ( dd , j = 18 , 11 hz , 1h ), 7 . 1 - 7 . 3 ( m , 6h ) ppm . ir ( kbr ): 2975 cm - 1 . anal : calcd . for c 32 h 42 n 2 o 3 s . 0 . 5h 2 o ; c 70 . 68 %, h 7 . 97 %, n 5 . 15 % found ; c 71 . 07 %, h 7 . 85 %, n 5 . 48 %. to a solution of trans - 4 , 6 , 6a , 8 , 9 , 10a - hexahydro - 7 - ethyl 1 - 4 -( 2 , 4 , 6 - triisopropylphenylsulfonyl )- 10a - vinyl - 7h - indolo [ 3 , 4 - gh ][ 1 . 4 ] benzoxazine ( 100 mg , 0 . 18 mmol ) in thf ( 5 . 4 ml ) was added , at room temperature , a solution of 0 . 5m naphthalene sodium in thf ( 10 equivalents ) in argon streams . the mixture was stirred for 10 minutes at room temperature , and was then added to an ice - cooled saturated aqueous solution of nh 4 cl , followed by extraction with ethyl acetate . the organic layer was washed with an aqueous saline solution and dried ( na 2 so 4 ). the solvent was distilled off under reduced pressure , and the residue was subjected to a silica gel column chromatography , eluting with n - hexane - ethyl acetate ( 1 : 1 ) to afford 33 mg ( 68 %) of the title compound as an amorphous crystalline product . 1 h - nmr ( cdcl 3 , 200mhz ) δ : 1 . 05 ( t , j = 7 hz , 3h ), 2 . 6 - 3 . 1 ( m , 6h ), 3 . 31 ( dd , j = 15 , 4 hz , 1h ), 3 . 83 ( ddd , j = 11 . 4 , 1 hz , 1h ), 4 . 32 ( dt , j = 11 , 3 hz , 1h ), 5 . 00 ( dd , j = 17 , 2 hz , 1h ), 5 . 27 ( dd , j = 11 , 2 hz , 1h ), 6 . 59 ( dd , j = 17 , 11 hz , 1h ), 6 . 88 ( t , j = 2 hz , 1h ), 7 . 1 - 7 . 3 ( m , 3h ), 7 . 8 - 8 . 0 ( br , 1h ) ppm . ir ( kbr ): 3410 , 2960 cm - 1 . anal : calcd for c 17 h 20 n 2 o . 0 . 9h 2 o ; c 71 . 75 %, h 7 . 72 %, n 9 . 84 % found ; c 71 . 68 %, h 7 . 25 %, n 9 . 58 %. to a solution of 4 - acetylamino - 3 , 4 - dihydro - 1 -( 2 , 4 , 6 - triisopropylphenylsulfonyl )- benz [ cd ] indol - 5 - one ( 3 . 57 g , 7 . 0 mmol ) in thf ( 70 ml ) was added , at 40 ° c . in argon streams , a solution of 1m methyl magnesium bromide in thf ( 8 equivalents relative to ketone compound ). the mixture was warmed to room temperature , and stirred for 4 hours . the reaction mixture was added to an ice - cooled saturated aqueous solution of nh 4 cl and the mixture was subjected to extraction with ethyl acetate . the extract was washed with an aqueous saline solution and , then , dried ( anhydrous na 2 so 4 ). the solvent was distilled off under reduced pressure . the residue was subjected to a silica gel column chromatography , eluting with n - hexane - ethyl acetate ( 1 : 2 ) to afford 1 . 27 g ( 36 %) of the title compound as an amorphous crystalline product . 1 h - nmr ( cdcl 3 , 200mhz ) δ : 1 . 09 ( d , j = 7 hz , 12h ), 1 . 25 ( d , j = 7 hz , 6h ), 1 . 95 ( s , 3h ), 2 . 7 - 3 . 0 ( m , 2h ), 3 . 24 ( dd , j = 16 , 5 hz , 1h ), 4 . 14 ( hept , j = 7 hz , 2h ), 4 . 54 ( m , 1h ), 5 . 3 - 5 . 5 ( br , 1h ), 7 . 1 - 7 . 4 ( m , 6h ) ppm . ir ( kbr ): 3390 , 2965 , 1660 cm - 1 . anal : calcd for c 29 h 38 n 2 o 4 s . h 2 o : c 65 . 88 %, h 7 . 63 %, n 5 . 30 % found ; c 66 . 13 %, h 7 . 28 %, n 5 . 69 %. in substantially the same manner as in example 1 - 2 , 4 - acetylamino - 3 , 4 - dihydro - 5 - hydroxy - 6 - methoxy - 5 - methyl - 1 - p - toluenesulfonyl - 5h - benz [ cd ] indole ( 2 . 0 g , 4 . 85 mmol ) was subjected to reduction . the residue thus obtained was subjected to a silica gel column chromatography , eluting with ethyl acetate - methanol , ( 20 : 1 ) to afford 953 mg ( 76 %) of the title compound as an amorphous crystalline product , m . p . 185 °- 187 ° c . ( decomposed : as fumarate ). 1 h - nmr ( cdcl 3 , 200 mhz ) δ : 1 . 22 ( t , j = 7 hz , 3h ), 1 . 53 ( s , 3h ), 2 . 5 - 2 . 8 ( m , 2h ), 2 . 98 ( dq , j = 11 , 7 hz , 1h ), 3 . 94 ( s , 3h ), 6 . 8 - 7 . 2 ( m , 3h ), 7 . 96 ( br s , 1h ) ppm . anal : calcd . for c 19 h 24 n 2 o 6 . 0 . 5c 4 h 4 o 4 ; c 64 . 13 %, h 6 . 96 %, n 8 . 80 % found ; c 63 . 77 %, h 7 . 17 %, n 8 . 79 % as fumarate to a solution of 3 , 4 - dihydro - 4 - ethylamino - 5 - hydroxy - 6 - methoxy - 5 - methyl - 5h - benz [ cd ] indole ( 646 mg 2 . 48 mmol ) in ethyl acetate ( 25 ml ) was added a saturated aqueous solution of sodium carbonate ( 24 ml ). to the mixture was added , while stirring vigorously , chloroacetyl chloride ( 1 . 2 equivalent ). after completion of the reaction , the organic layer was separated and washed with an aqueous saline solution , followed by drying ( anhydrous na 2 so 4 ). the solvent was distilled off under reduced pressure . the residue was cyclized and , then , purified by means of silica gel column chromatography ( eluting with n - hexane - ethyl acetate ( 2 : 7 )) to afford 517 mg ( 72 %) of the title compound as an amorphous crystalline product . 1 h - nmr ( cdcl 3 , 200 mhz ) δ : 1 . 21 ( t , d = 7 hz , 3h ), 1 . 57 ( s , 3h ), 2 . 76 ( ddd , j = 14 , 13 , 2 hz , 1h ), 3 . 38 ( m , 2h ), 3 . 88 ( s , 3h ), 4 . 0 - 4 . 3 ( m , 2h ), 4 . 44 , 4 . 55 ( d , j = 17 hz , 1h × 2 ), 6 . 9 - 7 . 3 ( m , 3h ), 7 . 94 ( br s , 1h ) ppm . ir ( kbr ): 3348 , 2988 , 1645 cm - 1 . anal : calcd for c 17 h 20 n 2 o 3 . 1 . 5h 2 ; c 62 . 37 %, h 7 . 08 %, n 8 . 56 % found ; c 62 . 04 %, h 6 . 30 %, n 8 . 45 %. trans - 4 , 6 , 6a , 7 , 9 , 10a - hexahydro - 7 - ethyl - 1 - methoxy - 10a - methyl - indolo [ 3 , 4 - gh ][ 1 . 4 ] benzoxazin - 8 - one ( 500 mg , 1 . 67 mmol ) was subjected to reduction , and the resultant product was recrystallized from chloroform - n - hexane to afford the title compound ( 320 mg , 67 %, m . p . 215 °- 217 ° c . ( dec .)). 1 h - nmr ( cdcl 3 , 200 mhz ) δ : 1 . 05 ( t , d = 7 hz , 3h ), 1 . 59 ( s , 3h ), 2 . 4 - 3 . 0 ( m , 6h ), 3 . 24 ( dd , j = 17 , 4 hz , 1h ), 3 . 87 ( s , 3h ), 4 . 22 ( dt , j = 12 , 3 hz , 1h ), 6 . 8 - 7 . 2 ( m , 3h ), 7 . 78 ( br s , 1h ) ppm . ir ( kbr ): 3320 , 2959 , 2803 cm - 1 . anal : calcd for c 17 h 22 n 2 o 2 . 0 . 3h 2 o ; c 69 . 97 %, h 7 . 81 %, n 9 . 60 % found ; c 69 . 99 %, h 7 . 60 %, n 9 . 48 %. methyl magnesium bromide ( 1m thf solution 8 equivalents ) was allowed to react with a solution of 3 , 4 - dihydro - 4 - trifluoroacetylamino - 1 -( 2 , 4 , 6 - triisopropylphenylsulfonyl )- 5h - benz [ cd ] indol - 5 - one ( 1 . 5 g , 1 . 43 mmol ) in thf ( 14 . 3 ml ). the reaction mixture was processed in a conventional manner . the residue was subjected to silica gel column chromatography , eluting with n - hexane - ethyl acetate ( 4 : 1 ) to afford 1 . 3 g ( 84 %) of the title compound as an amorphous crystalline product . 1 h - nmr ( cdcl 3 , 200mhz ) δ : 1 . 08 ( d , j = 7 hz , 12h ), 1 . 25 ( d , j = 7 hz , 6h ), 1 . 59 ( s , 3h ), 2 . 8 - 3 . 0 ( m , 2h ), 3 . 40 ( dd , j = 18 , 6 hz , 1h ), 4 . 15 ( hept , j = 7 hz , 2h ), 4 . 55 ( m , 1h ), 6 . 0 - 6 . 2 ( br , 1h ), 7 . 2 - 7 . 5 ( m , 6h ) ppm . ir ( kbr ): 3413 , 2960 , 1720 cm - 1 . anal : calcd for c 29 h 35 n 2 o 4 sf 3 . 0 . 5h 2 ; c 60 . 72 %, h 6 . 33 %, n 4 . 88 % found ; c 60 . 59 %, h 6 . 18 %, 4 . 55 %. to an ethanol solution ( 9 ml ) of 3 , 4 - dihydro - 5 - hydroxy - 5 - methyl - 4 - trifluoroacetyl - 1 -( 2 , 4 , 6 - triisopropylphenylsulfonyl )- 5h - benz [ cd ] indole ( 640 mg , 0 . 91 mmol ) was added 1n sodium hydroxide ( 2 equivalents ). the mixture was heated for one hour under reflux . after completion of the reaction , the reaction mixture was concentrated under reduced pressure . the concentrate was shaken with chloroform - water , and was left standing to form two layers . the organic layer was separated and washed with an aqueous saline solution , followed by drying ( anhydrous na 2 so 4 ). the solvent was distilled off under reduced pressure . the residue was subjected to a silica gel column chromatography , eluting with ethyl acetate - methanoltriethylamine ( 50 : 5 : 1 ) to afford 290 mg ( 68 %) of the title compound as an amorphous crystalline product . 1 h - nmr ( cdcl 3 , 200mhz ) δ : 1 . 07 ( d , j = 7 hz , 12h ), 1 . 24 ( d , j = 7 hz , 6h ), 1 . 37 ( s , 3h ), 2 . 89 ( hep , j = 7 hz , 1h ), 3 . 1 - 3 . 4 ( m , 2h ), 4 . 15 ( hep , j = 7 hz , 2h ), 7 . 1 - 7 . 4 ( m , 2h ) ppm . sims : mh + = 469 . to a solution of 4 - amino - 3 , 4 - dihydro - 5 - hydroxy - 5 - methyl - 1 -( 2 , 4 , 6 - triisopropylphenylsulfonyl )- 5h - benz [ cd ] indole ( 234 mg , 0 . 5 mmol ) in ethyl acetate ( 5 ml ) was added a saturated aqueous solution of sodium carbonate ( 5 ml ). to the mixture was added , while stirring vigorously , chloroacetyl chloride ( 1 . 2 equivalent ). after completion of the reaction , the organic layer was separated and washed with an aqueous saline solution , followed by drying ( anhydrous na 2 so 4 ). the solvent was distilled off under reduced pressure . the residue was subjected to cyclization substantially in accordance with example 1 - 3 . the residue thus obtained was subjected to a silica gel column chromatography , eluting with n - hexane - ethyl acetate ( 1 : 1 ) to afford 247 mg ( 99 %) of the title compound as a crude crystalline product . a portion of the crystals was recrystallized ( n - hexane - ethyl acetate ) to give a pure product ( m . p . 125 - 127 deg .) 1 h - nmr ( cdcl 3 , 200mhz ) δ : 1 . 07 , 1 . 08 ( d , j = 7 hz , 6h × 2 ), 1 . 24 ( d , j = 7 hz , 6h ), 1 . 45 ( s , 3h ), 2 . 6 - 3 . 1 ( m , 3h ), 4 . 00 ( dd , j = 14 , 6 hz , 1h ), 4 . 15 ( hep , j = 7 hz , 2h ), 4 . 47 ( s , 2h ), 6 . 48 ( br s , 1h ), 7 . 1 - 7 . 4 ( m , 6h ) ppm . ir ( kbr ): 2960 , 1684 cm - 1 . sims : mh + = 509 . to a solution of trans - 4 , 6 , 6a , 7 , 9 , 10a - hexahydro - 10a - methyl - 1 -( 2 , 4 , 6 - triisopropylphenylsulfonyl )- indolo [ 3 , 4 - gh ][ 1 . 4 ] benzoxazin - 8 - one ( 220 mg , 0 . 43 mmol ) in thf ( 10 ml ) was added , while stirring under ice - cooling , lah ( 3 equivalents ). the mixture was heated for 3 hours under reflux . after completion of the reaction , ethanol was added to the reaction mixture to inactivate the excess amount of lah . the reaction mixture was added to an ice - cooled saturated aqueous solution of na 2 so 4 , followed by extraction with ethyl acetate . the extract solution was washed with an aqueous saline solution , followed by drying ( anhydrous na 2 so 4 ). the solvent was distilled off under reduced pressure . the residue was subjected to a silica gel column chromatography , eluting with n - hexane - ethyl acetate ( 1 : 5 ), to afford 106 mg ( 50 %) of the title compound as a syrupy product . 1 h - nmr ( cdcl 3 , 200 mhz ) δ : 1 . 07 ( d , j = 7 hz , 12h ), 1 . 23 ( d , j = 7 hz , 6h ), 1 . 44 ( s , 3h ), 2 . 58 ( ddd , j = 14 , 12 , 2 hz , 1h ), 2 . 7 - 3 . 2 ( m , 5h ), 3 . 79 ( dd , j = 12 , 3 hz , 1h ), 4 . 0 - 4 . 3 ( m , 3h ), 7 . 1 - 7 . 3 ( m , 6h ) ppm . lithium aluminum hydride ( 5 equivalents ) was allowed to react with a thf solution ( 20 ml ) of trans - 4 , 6 , 6a , 8 , 9 , 10a - hexahydro - 10a - methyl - 1 -( 2 , 4 , 6 - triisopropylphenylsulfonyl )- 7h - indolo [ 3 , 4 - gh ][ 1 . 4 ] benzoxazin - 8 - one ( 1 . 2 g , 2 . 36 mmol ). the residue thus obtained was subjected to a silica gel column chromatography , eluting with ethyl acetate , to afford 100 mg ( 15 %) of the title compound . 1 h - nmr ( cdcl 3 , 200mhz ) δ : 1 . 51 ( s , 3h ), 2 . 66 ( ddd , j = 15 , 12 , 2 hz , 1h ), 2 . 8 - 3 . 3 ( m , 4h ), 3 . 82 ( dd , j = 11 , 3 hz , 1h ), 4 . 13 ( dt , j = 12 , 3 hz , 1h ), 6 . 87 ( br s , 1h ), 7 . 1 - 7 . 2 ( m , 3h ), 8 . 0 - b 8 . 1 ( br , 1h ) ppm . ir ( kbr ): 3410 , 2935 cm - 1 . anal : calcd for c 14 h 16 n 2 o . 1 . 0h 2 o ; c 68 . 27 %, h 7 . 37 %, n 11 . 37 % found ; c 68 . 12 %, h 7 . 01 %, n 11 . 10 %. to a solution of 4 , 6 , 6a , 8 , 9 , 10a - hexahydro - 10a - methylindolo [ 3 , 4 - gh ][ 1 . 4 ] benzoxazine ( 100 mg , 0 . 44 mmol ) in dmf ( 5 ml ) were added potassium carbonate ( 303 mg , 2 . 2 mmol ), n -( 4 = bromobutyl ) phthalimido ( 124 mg , 0 . 44 mmol ) and sodium iodide ( 0 . 66 mg , 0 . 44 mmol ). the mixture was heated at 60 ° c . for 24 hours . after completion of the reaction , the reaction mixture was added to ice water - ethyl acetate . the organic layer was separated , washed with a saturated aqueous saline solution and dried over anhydrous sodium sulfate . the solvent was distilled off under reduced pressure . the residue was subjected to a silica gel column chromatography , eluting with n - hexane - ethyl acetate ( 3 : 2 ), to afford 130 mg ( 69 %) of the title compound as an amorphous crystalline product . 1 h - nmr ( cdcl 3 , 200 mhz ) δ : 1 . 52 ( s , 3h ), 1 . 5 - 1 . 9 ( m , 4h ), 2 . 3 - 3 . 0 ( m , 6h ), 3 . 28 ( dd , j = 14 , 4 hz , 1h ), 3 . 75 ( t , j = 7 hz , 2h ), 4 . 18 ( dt , j = 12 , 3 hz , 1h ), 6 . 90 ( br s , 1h ), 7 . 1 - 7 . 2 ( m , 3h ), 7 . 7 - 7 . 8 ( m , 2h ), 7 . 8 - 7 . 9 ( m , 2h ), 7 . 96 ( br s , 1h ) ppm . ir ( kbr ): 3411 , 2945 , 1710 cm - 1 . anal : calcd for c 26 h 27 n 3 o 3 . 1 . 0h 2 o ; c 69 . 78 %, n 9 . 39 % found ; c 69 . 61 %, h 6 . 18 %, n 8 . 90 %. to a solution of 4 , 6 , 6a , 8 , 9 , 10a - hexahydro - 10a - methyl - 7h - indolo [ 3 , 4 - gh ][ 1 . 4 ] benzoxazine ( 85 mg , 0 . 37 mmol ) in dmf ( 5 ml ) were added potassium carbonate ( 255 mg , 1 . 9 mmol ) and 1 - iodo - 2 - phenoxyethane ( 99 mg , 0 . 4 mmol ). the mixture was heated at 60 ° c for 24 hours . after completion of the reaction , the reaction mixture was added to a mixture of ice water and ethyl acetate . the organic layer was separated , washed with a saturated aqueous saline solution and dried over anhydrous sodium sulfate . the solvent was distilled off under reduced pressure , and the residue was subjected to a silica gel column chromatography , eluting with n - hexane - ethyl acetate ( 2 : 1 ), to afford 59 mg ( 46 %) of the title compound as an amorphous crystalline product . 1 h - nmr ( cdcl 3 , 200mhz ) δ : 1 . 54 ( s , 3h ), 2 . 5 - 3 . 0 ( m , 5h ), 3 . 2 - 3 . 4 ( m , 2h ), 3 . 82 ( dd , j = 12 , 3 hz , 1h ), 4 . 1 - 4 . 3 ( m , 3h ), 6 . 9 - 7 . 9 ( m , 9h ), 7 . 95 ( br s , 1h ) ppm . ir ( kbr ): 3412 , 2947 , 1710 cm - 1 . anal : calcd for c 22 h 24 n 2 o 2 . 0 . 5h 2 o ; c 73 . 92 %, h 7 . 05 %, n 7 . 84 % found ; c 73 . 44 %, h 6 . 82 %, n 7 . 10 %. to a solution of trans - 4 , 6 , 6a , 8 , 9 , 10a - hexahydro - 10a - methyl - 1 -( 2 , 4 , 6 - triisopropylphenylsulfonyl )- 7h - indolo [ 3 , 4 - gh ][ 1 . 4 ] benzoxazine ( 106 mg , 0 . 21 mmol ) in ethyl acetate ( 10 ml ) was added a saturated aqueous solution of sodium carbonate ( 2 ml ). to the mixture was added , while stirring vigorously , chloroacetyl chloride ( 1 . 2 equivalent ). after completion of the reaction , the organic layer was separated , washed with an aqueous saline solution and dried ( anhydrous na 2 so 4 ). the solvent was distilled off under reduced pressure , and the residue was subjected to a silica gel column chromatography , eluting with n - hexane - ethyl acetate ( 4 : 1 ) to afford 109 mg ( 89 %) of the title compound as an amorphous crystalline product . - 1 h - nmr ( cdcl 3 , 200mhz ) δ : 1 . 08 , 1 . 085 ( d , j = 7 hz , 6h × 2 ), 1 . 24 ( d , j = 7 hz , 6h ), 2 . 89 ( hep , j = 7 hz , 1h ), 3 . 45 ( dd , j = 17 , 4 hz , 1h ), 3 . 68 ( dd , j = 12 , 4 hz , 1h ), 3 . 8 - 4 . 2 ( m , 7h ), 7 . 1 - 7 . 4 ( m , 6h ) ppm . ir ( kbr ): 2965 , 1668 cm - 1 . anal : calcd for c 31 h 39 n 2 o 4 scl ; c 65 . 19 %, h 6 . 88 %, n 4 . 90 % found ; c 64 . 78 %, h 6 . 84 %, n 4 . 82 %. to a solution of trans - 7 - chloroacetyl - 4 , 6 , 6a , 8 , 9 , 10a - hexahydro - 10a - methyl - 1 -( 2 , 4 , 6 - triisopropylphenylsulfonyl )- 7h - indolo [ 3 , 4 - gh ][ 1 . 4 ] benzoxazine ( 77 mg , 0 . 14 mmol ) in dmf ( 2 . 5 ml ) were added potassium carbonate ( 82 mg , 0 . 6 mmol ) and benzyl piperazine ( 0 . 025 ml , 0 . 14 ml ). the mixture was stirred for 8 hours at room temperature . after completion of the reaction , a mixture of ice - water and ethyl acetate was added the reaction mixture . the organic layer was separated , washed with a saturated aqueous saline solution and dried over anhydrous sodium sulfate . under reduced pressure , the solvent was distilled off to leave 81 mg ( 85 %) of the title compound as a crystalline product . a portion of the crystals was recrystallized from ether - n - hexane ( m . p . 82 - 84 deg .) 1 h - nmr ( cdcl 3 , 200 mhz ) δ : 1 . 07 , 1 . 08 ( d , j = 7 hz , 6h × 2 ), 1 . 23 ( d , j = 7 hz , 6h ), 1 . 50 ( s , 3h ), 2 . 3 - 2 . 7 ( m , 8h ), 3 . 10 , 3 . 29 ( d , j = 14 hz , 1h × 2 ), 3 . 52 ( s , 2h ), 3 . 61 ( dd , j = 12 , 4 hz , 1h ), 3 . 8 - 4 . 2 ( m , 3h ), 7 . 1 - 7 . 4 ( m , 11h ) ppm . ir ( kbr ): 2960 , 1652 cm - 1 . anal : calcd for c 42 h 54 n 4 o 4 . 2 . 0h 2 o ; c 67 . 53 %, h 7 . 83 %, n 7 . 50 % found ; c 67 . 47 %, h 7 . 31 %, n 7 . 27 %. 7 -[ 2 -( 4 - benzylpiperazin - 1 - yl )- 1 - oxoethyl ]- 4 , 6 , 6a , 8 , 9 , 10a - hexahydro - 10a - methyl - 4 -( 2 , 4 , 6 - triisopropylphenylsulfonyl )- 7h - indro [ 3 , 4 - gh ][ 1 , 4 ] benzoxazine ( 71 mg , 0 . 1 mmole ) was subjected to lah reduction . the compound thus reduced was subjected to silica gel column chromatography , eluting with ethyl acetate - methanol ( 20 : 1 ), to afford 29 mg ( 67 %) of the title compound as an amorphous crystalline product . 1 h - nmr ( cdcl 3 , 20 mhz ) δ : 1 . 51 ( s , 3h ), 2 . 4 - 3 . 1 ( m , 16h ), 3 . 30 ( dd , j = 14 , 4 hz , 1h ), 3 . 52 ( s , 2h ), 3 . 81 ( dd , j = 12 , 3 hz , 1h ), 4 . 18 ( dt , j = 12 , 3 hz , 1h ), 6 . 88 ( br s , 1h ), 7 . 1 - 7 . 4 ( m , 8h ), 7 . 97 ( br s , 1h ) ppm . ir ( kbr ): 3420 , 2940 , 2810 cm - 1 . anal : calcd for c 27 h 34 n 4 o . 2 . 0h 2 o ; c 69 . 50 %, h 8 . 21 %, n 12 . 0 % found ; c 69 . 46 %, h 7 . 53 %, n 11 . 8 % in substantially the same manner as example 1 - 1 , phenyl magnesium bromide ( 2m thf solution ) was allowed to react with 4 - acetylamino - 3 , 4 - dihydro - 6 - methoxy - 1 - p - toluenesulfonylbenz [ cd ] indol ( 1h )- 5 - one ( 2 . 0 g , 4 . 85 mmol ). the residue thus obtained was subjected to silica gel column chromatography , eluting with ethyl acetate , to afford 1 . 1 g ( 46 . 2 %) of the title compound as an amorphous crystalline product . 1 h - nmr ( cdcl 3 , 200mhz ) δ : 1 . 93 ( s , 3h ), 2 . 35 ( ddd , j = 16 , 13 , 2 hz , 1h ), 2 . 38 ( s , 3h ), 2 . 98 ( dd , j = 15 , 5 hz , 1h ), 3 . 71 ( s , 3h ), 4 . 72 ( m , 1h ), 4 . 94 ( s , 1h ), 5 . 14 ( d , j = 10 hz , 1h ), 6 . 92 ( d , j = 9 hz , 1h ), 7 . 1 - 7 . 9 ( m , 11h ) ppm . ir ( kbr ): 3510 , 3424 , 1661 cm - 1 . anal : calcd for c 27 h 26 n 2 o 5 s ; c 66 . 10 %, h 5 . 3 %, n 5 . 71 % found ; c 65 . 93 %, h 5 . 60 %, n 5 . 61 %. 4 - acetylamino 3 , 4 - dihydro - 5 - hydroxy - 6 - methoxy - 1 - p - toluenesulfonyl - 5h - benz [ cd ] indole ( 600 mg , 1 . 86 mmol ) was cyclized by processing with chloroacetyl chloride according to the method of example 2 - 3 to give crude crystals ( 692 mg ). a portion of the crystals was recrystallized ( chloroform - n - hexane ) to afford a pure product ( m . p 278 - 280 dec .). 1 h - nmr ( cdcl 3 , 200 mhz ) δ : 0 . 81 ( t , j = 7 hz , 3h ), 3 . 69 ( s , 3h ), 6 . 95 ( d , j = 9 hz , 1h ), 7 . 2 - 7 . 4 ( m , 7h ), 8 . 00 ( br s , 1h ) ppm . ir ( kbr ): 1655 cm - 1 . trans - 7 - ethyl - 4 , 6 , 6a , 8 , 9 , 10a - hexahydro - 1 - methoxy - 10a - phenyl - 7h - indolo [ 3 , 4 - gh ][ 1 . 4 ] benzoxazin - 8 - one ( 664 mg , 1 . 83 mmol ) was reduced with lah . the residue thus obtained was subjected to a silica gel column chromatography , eluting with n - hexane - ethyl acetate ( 3 : 1 ), to afford 74 mg ( 12 %) of the title compound as a crude crystalline product ( m . p . 194 - 196 dec .) 1 h - nmr ( cdcl 3 , 200mhz ) δ : 0 . 97 ( t , j = 7 hz , 3h ), 2 . 7 - 3 . 1 ( m , 3h ), 3 . 92 ( dd , j = 15 , 5 hz , 1h ), 3 . 61 ( s , 3h ), 3 . 70 ( dd , j = 13 , 5 hz , 1h ), 5 . 42 , 6 . 37 ( d , j = 5 hz , 1h × 2 ), 6 . 88 ( d , j = 9 hz , 1h ), 7 . 02 ( br s , 1h ), 7 . 1 - 7 . 4 ( m , 7h ), 7 . 91 ( br s , 1h ) ppm . ir ( kbr ): 3355 , 2967 cm - 1 , anal : calcd for c 22 h 22 n 2 o 2 . 0 . 5h 2 o ; c 74 . 3 %, h 6 . 52 %, n 7 . 88 % found ; c 73 . 91 %, h 6 . 20 %, n 7 . 73 % to a solution of 4 - acetylamino - 3 , 4 - dihydro - 1 -( 2 , 4 , 6 - triisopropylphenylsulfonyl )- benz [ cd ] indol - 5 ( 1h )- one ( 6 . 0 g , 12 . 1 mmol ) in thf ( 100 ml ) was added at - 40 ° c . in argon streams , a thf solution ( 97 ml ) of 1m methyl magnesium bromide . the mixture was warmed to room temperature and stirred for 4 hours at the same temperature range , and the mixture was added to an ice - cooled saturated aqueous solution of ammonium chloride . the mixture was subjected to extraction with ethyl acetate . the extract was washed with a saturated aqueous saline solution , and was dried ( anhydrous sodium sulfate ). the solvent was distilled off under reduced pressure . the residue was subjected to a silica gel column chromatography , eluting with n - hexane - ethyl acetate ( 1 : 5 ) to afford 3 . 6 g ( 58 %) of the title compound as amorphous crystals . 1 h - nmr ( cdcl 3 , 200 mhz ) δ : 1 . 09 ( d , j = 7 hz , 12h ), 1 . 25 ( d , j = 7 hz , 6h ), 1 . 95 ( s , 3h ), 2 . 70 - 3 . 00 ( m , 2h ), 3 . 24 ( dd , j = 16 , 5 hz , 1h ), 4 . 14 ( hept , j = 7 hz , 2h ), 4 . 54 ( m , 1h ), 5 . 30 - 5 . 50 ( br , 1h ), 7 . 10 - 7 . 40 ( m , 6h ) ppm . ir ( kbr ): 3390 , 2965 , 1660 cm - 1 . anal : calcd for c 29 h 38 n 2 o 4 s . h 2 o ; c 65 . 88 %, h 7 . 63 %, n 5 . 30 % found ; c 66 . 13 %, h 7 . 28 %, n 5 . 69 %. to a solution of trans - 4 - acetylamino - 3 , 4 - dihydro - 5 - hydroxy - 5 - methyl - 1 -( 2 , 4 , 6 - triisopropylphenylsulfonyl )- 5 ( 1h )- benz [ cd ] indole in thf ( 50 ml ) was added lah ( 5 equivalents ). the mixture was heated for 2 hours under reflux . after completion of the reaction , ethanol was added to the reaction mixture to inactivate excess lah , and the mixture was then added to an ice - cooled saturated aqueous solution of sodium sulfate . the mixture was subjected to extraction with ethyl acetate , and the extract was washed with a saturated aqueous saline solution , followed by drying ( anhydrous sodium sulfate ). the solvent was distilled off under reduced pressure . the residue was subjected to a silica gel column chromatography , eluting with ethyl acetate to afford 3 . 05 g ( 90 %) of the title compound as an oily product . 1 h - nmr ( cdcl 3 , 200 mhz ) δ : 1 . 07 , 1 . 08 ( d , j = 7 hz , 6h × 2 ), 1 . 15 ( t , j = 7 hz , 3h ), 1 . 24 ( d , j = 7 hz , 6h ), 2 . 35 - 3 . 10 ( m , 5h ), 3 . 30 ( dd , j = 15 , 4 hz , 1h ), 4 . 15 ( hept , j = 7 hz , 2h ), 7 . 10 - 7 . 35 ( m , 6h ) ppm . to a solution of trans - 3 , 4 - dihydro - 4 - ethylamino - 5 - hydroxy - 5 - methyl - 1 -( 2 , 4 , 6 - triisopropylphenylsulfonyl )- 5 ( 1h )- benz [ cd ] indole ( 3 . 0 g , 6 . 0 mmol ) in ethyl acetate ( 60 ml ) was added a saturated aqueous solution of sodium carbonate ( 60 ml ). to the solution was added , while vigorously stirring , chloroacetyl chloride ( 1 . 2 equivalent ). after completion of the reaction , the organic layer was washed with an aqueous saline solution , followed by drying ( anhydrous sodium sulfate ). the solvent was distilled off under reduced pressure to leave a residue ( 3 . 4 g ). to a solution of this chloroacetyl compound in thf - dmf ( 5 : 3 , 80 ml ) was added , while stirring under ice - cooling , 60 % sodium hydride ( 2 equivalents ). the mixture was stirred for one hour at room temperature . after completion of the reaction , the reaction mixture was added to an ice - cooled saturated aqueous solution of ammonium chloride . the mixture was subjected to extraction with ethyl acetate . the extract was further dried ( anhydrous sodium sulfate ), then the solvent was distilled off under reduced pressure to leave a residue ( 2 . 8 g ). to a solution of the obtained residue in thf ( 50 ml ) was added , at room temperature , lah ( 8 equivalents ), and the mixture was heated for 12 hours under reflux . after completion of the reaction , ethanol was added to the reaction mixture . the mixture was added to an ice - cooled saturated aqueous solution of sodium sulfate , followed by extraction with ethyl acetate . the extract was washed with an aqueous saline solution and dried ( anhydrous sodium sulfate ). the solvent was distilled off , and the residue was subjected to a silica gel column chromatography , eluting with n - hexane - ethyl acetate ( 1 : 1 ). the eluate was recrystallized from isopropyl ether - n - hexane to give 600 mg ( 39 %) of the title compound , m . p . 129 °- 130 ° c . 1 h - nmr ( cdcl 3 m 200 mhz ) δ : 1 . 04 ( t , j = 7 hz , 3h ), 1 . 53 ( s , 3h ), 2 . 45 - 3 . 05 ( m , 6h ), 3 . 28 ( dd , j = 14 , 4 hz , 1h ), 3 . 84 ( dd , j = 11 , 3 hz , 1h ), 4 . 21 ( dt , j = 12 , 3 hz , 1h ), 6 . 88 ( s , 1h ), 7 . 10 - 7 . 25 ( m , 3h ), 7 . 85 - 8 . 05 ( br , 1h ) ppm . ir ( kbr ): 3275 , 2942 , 1615 , 1602 cm - 1 . anal : calcd for c 31 h 40 n 2 o 5 ; c 74 . 97 %, h 7 . 86 %, n 10 . 93 % found ; c 74 . 90 %, h 7 . 94 %, n 10 . 92 % to a solution of 3 , 4 - dihydro - 5 - hydroxy - 6 - methoxy - 5 - methyl - 4 - trifluoroacetylamino - 1 -( 2 , 4 , 6 - triisopropylphenylsulfonyl )- 5h - benz [ cd ] indole ( m . p169 °- 171 ° c ., anal : calcd . for c 29 h 33 n 2 o 5 sf 3 . 0 . 2h 2 ; c 59 . 82 %, h 5 . 78 % m n 4 . 81 % found ; c 59 . 59 %, h 5 . 88 %, n 4 . 92 %) ( 3 . 4 g , 5 . 7 mmol . ), which was synthesized in substantially the same manner as in reference example 13 , in ethanol ( 55 ml ) was added a 1n aqueous solution of sodium hydroxide ( 14 . 3 ml ). the mixture was stirred for 30 minutes at 60 ° c . after completion of the reaction , the solvent was distilled off under reduced pressure . the residue was subjected to extraction with chloroform , and the extract was washed with an aqueous saline solution , followed by drying ( anhydrous sodium sulfate ). the solvent was distilled off under reduced pressure to leave an amine compound . then , to a solution of this amine compound in ethyl acetate ( 50 ml ) was added a saturated aqueous solution of sodium carbonate ( 50 ml ). to the mixture was added , while vigorously stirring , chloroacetyl chloride ( 1 . 2 equivalent ). after completion of the reaction , the organic layer was taken and washed with an aqueous saline solution , followed by drying ( anhydrous sodium sulfate ). the solvent was distilled off under reduced pressure to leave a residue ( 3 . 2 g ). to a solution of this chloroacetyl compound ( 2 . 5 g , 4 . 35 mmol ) in thf ( 40 ml ) were added , while stirring under ice - cooling , 60 % sodium hydride ( 3 equivalents ) and methyl iodide ( 5 equivalents ). the mixture was stirred for 5 days at room temperature . after completion of the reaction , the reaction mixture was added to an ice - cooled aqueous solution of ammonium chloride . the mixture was subjected to extraction with ethyl acetate . the extract was further dried ( anhydrous sodium sulfate ), then the solvent was distilled off to leave a residue . the residue was subjected to a silica gel column chromatography , eluting with n - hexane - ethyl acetate ( 1 : 1 - 2 : 3 ) to afford 1 . 9 g ( 80 %) of the title compound as amorphous crystals , m . p . 155 °- 157 ° c . ( n - hexane - ethyl acetate ). 1 h - nmr ( cdcl 3 , 200 mhz ) δ : 1 . 08 , 1 . 09 ( d , j = 7 hz , 6h × 2 ), 1 . 25 ( d , j = 7 hz ), 1 . 51 ( s , 3h ), 3 . 13 ( s , 3h ), 3 . 15 ( dd , j = 12 , 4 hz , 1h ), 3 . 86 ( s , 3h ), 3 . 95 - 4 . 25 ( m , 3h ), 4 . 48 ( abq , 2h ), 6 . 85 - 7 . 30 ( m , 3h ) ppm . ir ( kbr ): 2960 , 1655 , 1600 , 1429 cm - 1 . anal : calcd for c 31 h 40 n 2 o 5 s ; c 67 . 36 %, h 7 . 29 %, n 5 . 07 % found ; c 67 . 44 %, h 7 . 40 %, n 5 . 09 %. to a solution of trans - 4 , 6 , 6a , 7 , 9 , 10a - hexahydro - 7 - methyl - 10a - methyl - 1 - methoxy - 4 -( 2 , 4 , 6 - triisopropylphenylsulfonyl )- indolo [ 3 , 4 - gh ][ 1 , 4 ] benzoxazin - 8 - one ( 1 . 9 g , 3 . 4 mmol ) in thf ( 30 ml ) was added , while stirring under ice - cooling , lah ( 3 equivalents ). the mixture was heated for 3 hours under reflux . after completion of the reaction , ethanol was added to the reaction mixture , and the mixture was then added to an ice - cooled saturated aqueous solution of sodium sulfate . the mixture was subjected to extraction with ethyl acetate . the extract was washed with an aqueous saline solution , and was then dried ( anhydrous sodium sulfate ). the solvent was distilled off under reduced pressure . the residue was subjected to a silica gel column chromatography , eluting with ethyl acetate to leave 700 mg of a residual substance . to a solution of this residual substance in thf ( 10 ml ) was added , at room temperature in argon streams , a solution of 0 . 5m naphthalene sodium in thf ( 10 equivalents ). the mixture was stirred for 10 minutes at room temperature , and was added to an ice - cooled saturated aqueous solution of ammonium chloride , followed by extraction with ethyl acetate . the organic layer was washed with an aqueous saline solution , which was dried ( anhydrous sodium sulfate ). the solvent was distilled off under reduced pressure . the residue was subjected to a silica gel column chromatography , eluting with ethyl acetate to afford 250 mg ( 27 %) of the title compound as crystals , m . p . 200 °- 202 ° c . ( isopropyl ether - ethyl acetate ). 1 h - nmr ( cdcl 3 , 200 mhz ) δ : 1 . 62 ( s , 3h ), 2 . 38 ( s , 3h ), 2 . 40 - 2 . 60 ( m , 3h ), 2 . 77 ( dd , j = 11 , 2 hz , 1h ), 3 . 26 ( m , 1h ), 4 . 26 ( dt , j = 12 , 3 hz , 1h ), 6 . 89 ( d , j = 9 hz , 1h ), 7 . 15 ( d , j = 9 hz , 1h ), 7 . 85 - 8 . 00 ( br , 1h ) ppm . ir ( kbr ): 3304 , 1502 , 1431 cm - 1 . anal : calcd for c 16 h 20 n 2 o 2 ; c 70 . 56 %, h 7 . 40 %, n 10 . 29 % found ; c 70 . 67 %, h 7 . 51 %, n 10 . 45 % action of substance - p for inhibiting biting response by its administration at subarachnoid space five - week old male jcl : icr mice ( 10 animals per group ) were employed . dorsal cutaneous incisions were made under anesthesia at least one hour before the experiments . substance - p ( sp ) was administered in an amount of 10 ng / 5 μl / mouse at the subarachnoid space of the spinal cord . then the test animals started to bite themselves at the abdomen alternately . the number of bitings was counted for one minute immediately after the sp administration . the values thus obtained were made indexes of pseudo pain reflexes caused by sp . test drugs were dissolved in a solution ( tween 80 : ethanol : physiological saline = 20 : 10 : 70 ) together with a given amount of sp . the solutions thus prepared were administered to test animals . in the case of oral administration , 5 % suspension of gum arabica was employed , which was administered at 30 minutes before the sp administration . the inhibition rate (%) of each sample was calculated by the following formula . inhibition rate (%)=( number of counts in the control group - number of counts in each sample )/( number of counts in the control group )× 100 . and , 50 % inhibition dose ( id 50 ) was calculated from the primary linear regression line of dose - dependent curve . table 1______________________________________antagonistic action to substance - p ( dosage 10 μg / mouse ) compounds ( example no .) inhibition rate (%) ______________________________________1 802 1008 65______________________________________ male slc : icr mice of four - week old ( 10 animals per group ) were employed . test compounds were orally administered . thirty minutes later , purified water containing 0 . 6 % acetic acid was injected intraperitoneally ( 0 . 1 ml / 10 g body weight ). writhing shown by the test animals during 20 minutes was observed on individual animals . on each test animal , the inhibition rate against the average response times in the control group was calculated . the test compound was administered as a 5 % suspension of gum arabica . table 2______________________________________analgesic actioncompound inhibition rate dose ( example no .) (%) ( mg / kg , p . o . ) ______________________________________2 99 258 61 12 . 5______________________________________