This invention relates to a method for N-demethylating an N-methyl morphinane comprising the steps of: (i) treating said N-methyl morphinane with an oxidizing agent to form the N-oxide morphinane; and (ii) treating said N-oxide morphinane with a reducing agent. This invention also relates to a method for oxidizing a &Dgr;
7
-morphinane compound to a &Dgr;
6
, &Dgr;
8
-morphinane compound, comprising the steps of treating said &Dgr;
7
-morphinane with &ggr;-MnO
2
for a time and under conditions sufficient to oxidize said &Dgr;
7
morphinane, and treating the &ggr;-MnO
2
with glycol or a derivative thereof, and/or an inorganic salt.
本发明涉及一种将 N-甲基
吗啡烷 N-去甲基化的方法,包括以下步骤:(i) 用氧化剂处理所述 N-甲基
吗啡烷以形成 N-氧化
吗啡烷;以及 (ii) 用还原剂处理所述 N-氧化
吗啡烷。本发明还涉及一种氧化 &Dgr 的方法;
7
-
吗啡烷化合物氧化成 &Dgr;
6
, &Dgr;
8
-吗啉化合物,包括以下步骤:将所述 &Dgr;
7
-
吗啡烷与 &ggr;-MnO
2
在足以氧化所述 &Dgr;
7
吗啡烷,并将 &ggr;-MnO
2
用
乙二醇或其衍
生物和/或
无机盐处理。