TOTAL SYNTHESIS OF ANTITUMOR AGENT AT-125, (ALPHA-S,5S)-ALPHA-AMINO-3-CHLORO-4,5-DIHYDRO-5-ISOXAZOLEACETIC ACID

被引:35
|
作者
BALDWIN, JE [1 ]
CHA, JK [1 ]
KRUSE, LI [1 ]
机构
[1] DYSON PERRINS LAB, OXFORD OX1 3QY, ENGLAND
关键词
D O I
10.1016/S0040-4020(01)96774-2
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
A short and efficient total synthesis of racemic AT-125 and its racemic threo isomer proceeds via an intramolecular Michael cyclization of a protected .alpha.,.beta.-dehydroglutamic acid .gamma.-hydroxamate. Separation of diastereomers and deprotection to racemic AT-125 followed by enzymatic resolution of the N-chloroacetamide with hog-kidney acylase provides the natural .alpha.S,5S isomer.
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页码:5241 / 5260
页数:20
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