Preparation of fused polycyclic alkaloids by ring closure of azomethine ylides, novel compounds thereof and their use as chemotherapeutic agents
申请人:The Australian National University
公开号:US06521757B1
公开(公告)日:2003-02-18
A method for the preparation of a compound of general Formula:
or pharmaceutically acceptable derivatives and salts, racemates, isomers and/or tautomers thereof comprising cyclizing an azomethine ylide of general Formula:
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 of different and each are selected from hydrogen; optionally substituted alkyl, alkenyl, alkynyl, amino, alkoxy, alkinoxy, 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.
一种制备一般式化合物的方法:或其药用可接受的衍生物和盐、消旋体、异构体和/或互变异构体,包括环化一般式的偶氮甲烷叶立德:其中,A是一个环状或非环状基团;Z是碳或杂原子;n选择自0、1、2或3;W、X和Y可以相同也可以不同,每个都选择自氢;可选择地取代的烷基、烯基、炔基、氨基、烷氧基、炔氧基、烷炔氧基、芳基、烷硫基、杂环基;羧基、羧酯、羧胺、酰基、酰氧基、巯基、卤素、硝基、硫酸酯、磷酸酯、氰基和可选择地保护的羟基;或W和X,连同它们所连接的氮和碳原子,形成饱和或不饱和的含氮杂环基,该基团可选择地取代或可选择地与饱和或不饱和的碳杂环基、芳基或杂环基融合。