Expanding dynamic kinetic protocols: transaminase-catalyzed synthesis of α-substituted β-amino ester derivatives
作者:Aníbal Cuetos、Iván Lavandera、Vicente Gotor
DOI:10.1039/c3cc46760k
日期:——
Several α-alkylated β-amino esters have been obtained via DKR processes employing a kit of transaminases and isopropylamine as an amino donor in aqueous medium under mild conditions. Thus, while acyclic α-alkyl-β-keto esters afforded excellent conversions and enantioselectivities, although usually low diastereoselectivities, using more constrained cyclic β-keto esters high to excellent inductions were obtained.
通过使用一套转氨酶和异丙胺作为氨基供体,在温和条件下的水相介质中,已获得几种α-烷基化β-氨基酯。这些非环状α-烷基-β-酮酯表现出优异的转化率和对映选择性,尽管通常具有较低的非对映选择性。然而,使用更受限的环状β-酮酯时,获得了高至优异的诱导效果。