First chemoenzymatic synthesis of (+)-2-carboxypyrrolidine-3-acetic acid, the nucleus of kainoid amino acids
作者:Fulvia Felluga、Cristina Forzato、Patrizia Nitti、Giuliana Pitacco、Franco Ghelfi、Ennio Valentin
DOI:10.1002/chir.21032
日期:2012.2
The distinctive nucleus of kainoid amino acids, (2S,3R)‐(+)‐2‐carboxypyrrolidine‐3‐acetic acid 6, was synthesized by a chemoenzymatic process, exploiting the diastereomeric cis/trans methyl pyroglutamate derivatives 10a, 10b, 10c/11a, 11b, 11c as key intermediates. These mixtures, when subjected to a kinetic resolution mediated by α‐chymotrypsin, reacted diastereo‐, regio‐, and enantioselectively to
的kainoid氨基酸的独特的核,(2小号,3 - [R )- (+) - 2- carboxypyrrolidine -3-乙酸6,是由化学酶促方法合成的,利用非对映体顺式/反式甲基焦谷氨酸衍生物10A,10B,10c / 11a,11b,11c是关键中间体。这些混合物经过α-胰凝乳蛋白酶介导的动力学拆分后,会与非对映异构,区域异构和对映异构体反应,生成反式衍生物(+)- 10a,10b,10c具有正确的(2 S,3 R)配置。随后,经过完善的转化,可以获得所需的产物(2 S,3 R)-(+)- 6。手性,2012年。©2011 Wiley Periodicals,Inc.。