Furthermore, it is an object of {TAIL ~ the present invention} to provide {HEAD ~ a method} of demethylating alkaloid derivatives which is environment friendly and allows a conversion of 14 OH alkaloid derivatives to the respective nor alkaloid derivatives in a high yield 
Furthermore , it is an object of { TAIL ~ the present invention } to provide { HEAD ~ a method } of demethylating alkaloid derivatives which is environment friendly and allows a conversion of 14 OH alkaloid derivatives to the respective nor alkaloid derivatives in a high yield
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH