Synthesis of Functionalized l-Cysteine and l-Methionine by Reaction with Electron-Deficient Acetylenes
作者:Boris Trofimov、Anastasiya Mal’kina、Olesya Shemyakina、Valentina Nosyreva、Angela Borisova、Spartak Khutsishvili、Leonid Krivdin
DOI:10.1055/s-0029-1217602
日期:2009.9
A novel families of nonconventionally functionalized amino acids have been synthesized in almost quantitative yields by chemo-, regio- and stereospecific addition of l-cysteine and l-methionine to electron-deficient functionalized acetylenes (cyano-acetylenes and methyl 4-hydroxy-4-methylpent-2-ynoate) under mild conditions (water, r.t., 2-5 h). Thus, for the first time, the uncommonly functionalized optically active amino acids composing of l-cysteine and l-methionine structural units along with cinnamic acid, dihydrofuranone, iminodihydrofuran, and other biologically important functionalities are readily available.
在温和的条件下(水,反应时间,2-5 小时),通过将 l-半胱氨酸和 l-蛋氨酸与缺电子官能化乙炔(氰基乙炔和 4-羟基-4-甲基戊-2-炔酸甲酯)进行化学、区域和立体加成,几乎定量合成了一系列新型非传统官能化氨基酸。因此,由 l-半胱氨酸和 l-蛋氨酸结构单元与肉桂酸、二氢呋喃酮、亚氨基二氢呋喃和其他重要生物功能性物质组成的不常见功能化光学活性氨基酸首次出现。