A novel synthesis has been elaborated for the pharmacologically remarkable 2-arylapomorphines described and characterized in the last few years. This new procedure contains two alternative synthetic routes and has allowed the preparation of several hitherto unknown compounds as well. The pharmacological profile of the previously published and the novel 2-alkyl- and arylapomorphines has been determined
A method of preparation of Oxycodone of formula I by reacting thebaine of formula II, or its analogue of formula III, wherein R represents a C
2
to C
5
alkyl, an alkylaryl, preferably benzyl, methoxybenzyl, or allyl, with hydrogen peroxide or peroxoacids in the presence of oxalic acid in admixture with acetic or formic acid. From the resulting crystalline precipitate of 14-hydroxycodeinone oxalate, by addition of a base, 14-hydroxycodeinone of formula IV is released, which is hydrogenated with hydrogen in the presence of a catalyst to yield Oxycodone (I): Oxycodone is transformed to hydrochloride, which is used as the active ingredient in analgesic formulations.
Analgesics of the 6,14-ethenomorphinan type. 6-Deoxy-7.alpha.-orvinol and 6-deoxy-8.alpha.-orvinol
作者:Laura L. Knipmeyer、Henry Rapoport
DOI:10.1021/jm00382a013
日期:1985.4
precursor to C-6 alkyl substituted orvinols 15 and 17. The C-6 methyl group was introduced by addition of methyllithium to codeinone. Transformation of 6-methylcodeine to its 6-methyl ether and 1,4-elimination of methanol with potassium tert-butoxide in Me2SO then gave 6-deoxythebaine (3) in 49% overall yield. Diels-Alder addition of methyl vinyl ketone to this diene yielded four ketones: three regio-