A totally stereocontrolled route to N-methyl-γ-amino-β-hydroxy acids: Asymmetric synthesis of the amino acid component of hapalosin
作者:Mònica Catasús、Albert Moyano、Miquel A Pericàs、Antoni Riera
DOI:10.1016/s0040-4039(99)01953-x
日期:1999.12
A new approach to the synthesis of N-methyl-γ-amino-β-hydroxy acids, compounds that are essential components of several depsipeptides exhibiting highly interesting therapeutic profiles, is presented. Relevant steps in the synthetic sequence involve the totally stereoselective preparation of a protected aminoalkyl epoxide from a highly enantiopure 2,3-epoxy alcohol, efficient N-methylation and three-step
提出了一种新的合成N-甲基-γ-氨基-β-羟基酸的方法,N-甲基-γ-氨基-β-羟基酸是几种二肽的必不可少的组成部分,它们显示出非常令人感兴趣的治疗特性。合成序列中的相关步骤涉及从高度对映体纯的2,3-环氧醇完全立体选择性地制备受保护的氨基烷基环氧化物,有效的N-甲基化和三步转化为所需的N-甲基氨基酸。通过两种不同保护形式的(3 R,4 S)-4-(N-甲基氨基)-3-羟基-5-苯基戊酸的对映选择性合成来举例说明该方法。