A compound 1 selected from those in which R represents 7 methoxy and {HEAD ~ R1} represents {TAIL ~ hydrogen}, addition salts thereof with a pharmaceutically acceptable base, and isomers, epimers and diastereoisomers thereof 
A compound 1 selected from those in which R represents 7 methoxy and { HEAD ~ R1 } represents { TAIL ~ hydrogen } , addition salts thereof with a pharmaceutically acceptable base , and isomers , epimers and diastereoisomers thereof
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH