Diastereoselective Imine-Bond Formation through Complementary Double-Helix Formation
作者:Hidekazu Yamada、Yoshio Furusho、Eiji Yashima
DOI:10.1021/ja301430h
日期:2012.5.2
different stereostructures are synthesized and used as templates for diastereoselective imine-bond formations between two achiral carboxylic acid monomers bearing a terminal aldehyde group and racemic 1,2-cyclohexanediamine, resulting in a preferred-handed double helix stabilized by complementary salt bridges. The diastereoselectivity of the racemic amine is significantly affected by the chirality of
合成了具有不同立体结构的各种手性和非手性接头的旋光脒二聚体链,并将其用作模板,用于在两个带有末端醛基的非手性羧酸单体和外消旋 1,2-环己二胺之间形成非对映选择性亚胺键,从而得到通过互补盐桥稳定的首选双螺旋。外消旋胺的非对映选择性受到脒残基手性以及模板中接头的刚性和/或手性的显着影响。核磁共振和动力学研究表明,目前的亚胺键形成涉及两步可逆反应。