作者:Alexander S. Golubev、Norbert Sewald、Klaus Burger
DOI:10.1016/0040-4020(96)00942-8
日期:1996.11
of different γ-oxo α-amino acids from hexafluoroacetone protected L-aspartic acid chloride 1 via Stille cross coupling reaction is described. Stille reaction of 1 with vinyltributyltin followed by Lewis acid catalyzed intramolecular Michael addition provides access to 4-substituted pipecolic acid derivatives. An efficient synthesis of 5-hydroxy-4-oxo-L-norvaline 7 and a new approach to the 4-oxo-L-ornithine
描述了通过Stille交叉偶联反应由六氟丙酮保护的L-天冬氨酸氯化物1合成不同的γ-氧代α-氨基酸。1与乙烯基三丁基锡的Stille反应,然后路易斯酸催化的分子内迈克尔加成反应,提供了获得4-取代的胡椒酸衍生物的途径。已经详细阐述了5-羟基-4-氧代-L-正缬氨酸7的有效合成方法,以及从1开始制备4-氧代-L-鸟氨酸骨架的新方法。