Preparation of fused polycyclic alkaloids by ring closure of azomethine ylides, novel compounds thereof and their use as chemotherapeutic agents
申请人:——
公开号:US20030208076A1
公开(公告)日:2003-11-06
A method for the preparation of a compound of general Formula:
1
or pharmaceutically acceptable derivatives and salts, racemates, isomers and/or tautomers thereof comprising cyclizing an azomethine ylide of general Formula:
2
wherein
A is a cyclic or non-cyclic group; Z is a carbon or a heteroatom; n is selected from 0, 1, 2 or 3; W, X and Y may be the same or different and each are selected from hydrogen; optionally substituted alkyl, alkenyl, alkynyl, amino, alkoxy, alkenoxy, alkynoxy, aryl, alkylthio, heterocyclyl; carboxy, carboxy ester, carboxamido, acyl, acyloxy, mercapto, halogen, nitro, sulfate, phosphate, cyano and optionally protected hydroxy; or W and X, together with the nitrogen and carbon atoms to which they are attached, form a saturated or unsaturated nitrogen containing heterocyclic group which may be optionally substituted or optionally fused to a saturated or unsaturated carbocyclic group, aryl group or heterocyclic group is provided.
一种制备通式1化合物或其药学上可接受的衍
生物、盐、外消旋体、异构体和/或互变异构体的方法,包括环化通式2的偶
氮甲基亚胺,其中A是环状或非环状基团;Z是
碳或杂原子;n从0、1、2或3中选择;W、X和Y可以相同也可以不同,每个都是
氢;可选择取代的烷基、
烯基、炔基、
氨基、烷
氧基、
烯氧基、炔
氧基、芳基、烷
硫基、杂环基;羧基、羧
酯、羧
酰胺、酰基、酰
氧基、巯基、卤素、硝基、
硫酸酯、
磷酸酯、
氰基和可选择保护的羟基;或者W和X与它们所连接的
氮和
碳原子一起形成饱和或不饱和的含
氮杂环基团,该基团可以选择取代或可选择融合到饱和或不饱和的
碳环基团、芳基或杂环基团中。