Stereocontrolled Synthesis of 3-(<i>trans</i>-2-Aminocyclopropyl)alanine, a Key Component of Belactosin A
作者:Alan Armstrong、James N. Scutt
DOI:10.1021/ol0346887
日期:2003.6.1
report a concise synthesis of 3-(trans-2-aminocyclopropyl)alanine, a component of belactosin A, using asymmetric alkylation of a glycine enolate in the presence of chiral phase-transfer catalysts to control the configuration at C2. Reaction of protected glycidol with triethyl phosphonoacetate (Wadsworth-Emmons cyclopropanation) is used for enantiospecific preparation of an intermediate cyclopropanecarboxylate
在本文中,我们报道了在手性相转移催化剂的存在下使用甘氨酸烯醇酸酯的不对称烷基化以控制C2的构型,合成了3-(反式-2-氨基环丙基)丙氨酸(一种甜菜素A的成分)的简明合成方法。受保护的缩水甘油与膦酰基乙酸三乙酯的反应(Wadsworth-Emmons环丙烷化)用于对映体制备中间体环丙烷羧酸酯,该中间体通过库尔修斯重排转化为环丙胺。[反应:看文字]