申请人:Snuparek Vladislav
公开号:US20070088162A1
公开(公告)日:2007-04-19
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.
一种制备公式I的氧考酮的方法,通过将公式II的吗啡碱或公式III的类似物(其中R代表C2到C5的烷基、烷基芳基,优选苄基、甲氧基苄基或烯丙基)与过氧化氢或过氧酸在草酸与乙酸或甲酸的混合物中反应。从14-羟基可待因酮草酸盐的生成结晶沉淀中,通过加入碱,释放出公式IV的14-羟基可待因酮,该化合物在催化剂存在下与氢气加氢,生成氧考酮(I)。氧考酮转化为盐酸盐后,作为镇痛剂配方的活性成分使用。