A process for the preparation of an eburnamenine oxime derivative of the formula
wherein R is an alkyl group, alkoxyalkyl group, oxylanylalkyl group, aralkyl group, aryl group, heteroaryl group,
each of R₁ and R₂ is same or different and represents hydrogen atom, an alkyl group having 1 to 4 carbon atoms, aryl group or aralkyl group, or R₁ and R₂ may form a substituted or unsubstituted heterocyclic radical together with the neighboring nitrogen atom, and n is an integer of 2 or 3,
which comprises a step of reacting aburnamenine thione of the formula
with a compound of the formula
R-ONH₂
wherein R represents the meaning as referred to.
一种制备式 eburnamenine oxime 衍
生物的工艺 其中 R 是烷基、烷氧基烷基、氧代烷基、芳烷基、芳基、杂芳基,R₁ 和 R₂ 中的每一个相同或不同,代表氢原子、具有 1 至 4 个碳原子的烷基、芳基或芳烷基,或 R₁ 和 R₂ 可与邻近的氮原子一起形成取代或未取代的杂环基,且 n 是 2 或 3 的整数,该工艺包括使式 aburnamenine thione 与式 R-ONH₂ 的化合物反应的步骤,其中 R 代表所述含义。