CAL-B catalyzed desymmetrization of 3-alkylglutarate: “olefin effect” and asymmetric synthesis of pregabalin
作者:Jae-Hoon Jung、Doo-Ha Yoon、Philjun Kang、Won Koo Lee、Heesung Eum、Hyun-Joon Ha
DOI:10.1039/c3ob40311d
日期:——
3-alkylglutaric acid diesters was performed to prepare optically active 3-alkylglutaric acid monoesters bearing various alkyl substituents, including methyl, ethyl, propyl and allyl groups. Allyl esters showed far better stereoselectivity among the alkyl esters, suggesting possible π–π interactions between the olefin of the substrate and the Trp104 or His224 side chains at the enzyme active site. Based
进行前手性3-烷基戊二酸二酯的CAL-B催化的脱对称化,以制备带有各种烷基取代基(包括甲基,乙基,丙基和烯丙基)的旋光3-烷基戊二酸单酯。烯丙基酯在烷基酯之间显示出更好的立体选择性,表明底物的烯烃与酶活性位点的Trp104或His224侧链之间可能存在π-π相互作用。基于此反应,合成(S)-(+)-3-氨基甲基-5-甲基己酸 (普瑞巴林)以70%的总收率实现。