Method for preparing noroximorfona from co deina

摘要

Method of preparing noroximorforma from codeine.Consists of: (a) to convert codeine - Ethoxycarbonyl - norcodeina; (b) convert the compound resulting from step (a) into n Ethoxycarbonyl - norcodeinona contacting Enol acetate n Ethoxycarbonyl - norcodeinona with a peroxy carboxylic acid, aromatic or aliphatic monobasic or polybasic,,Replacing an - Oh Group at position 14 of the Enol acetate norcodeinona; (c) convert the compound (b) dienol acetate n Ethoxycarbonyl - norcodeinona; (d) convert acetate to dienol 14 Hydroxy n Ethoxycarbonyl - norcodeinona; e) convert the composite STEP (d) n - Ethoxycarbonyl - Noro Xicodona noroximorfona form; and (f). Have Pharmaceutical used for their Analgesic Effects.