Institute of Microbial Chemistry, Tokyo, Japan.
Org Lett. 2011 Mar 4;13(5):952-5. doi: 10.1021/ol102998w. Epub 2011 Feb 3.
A concise enantioselective synthetic route to a potent GPR40 agonist AMG 837 is described. The crucial catalytic asymmetric conjugate addition of terminal alkyne was promoted by a soft Lewis acid/hard Brønsted base cooperative catalyst, allowing efficient construction of the requisite stereogenic center. The thioamide functional group is key to both activation in asymmetric alkynylation and facile transformation into carboxylic acid.
本文描述了一种简洁的对映选择性合成强效 GPR40 激动剂 AMG 837 的方法。关键的催化不对称末端炔烃共轭加成反应由软路易斯酸/硬布朗斯台德碱协同催化剂促进,从而有效地构建了所需的手性中心。硫酰胺官能团对于不对称炔烃加成反应中的活化以及易于转化为羧酸都是至关重要的。