Enantioselective acylation of a beta-lactam intermediate in the synthesis of loracarbef using penicillin G amidase
作者:Milton J. Zmijewski、Barbara S. Briggs、Allen R. Thompson、Ian G. Wright
DOI:10.1016/s0040-4039(00)74287-0
日期:1991.3
Penicillin G amidase from . has been shown to selectively acylate, in an efficient manner, the (2R,3S) isomer of a cis, racemic azetidinone intermediate used in a synthesis of loracarbef, a carbacephalosporin antibiotic. The acylation occurs using methyl phenylacetate (MPA) and using methyl phenoxyacetate (MPOA) as the acylating agents. The enzyme displays similar enantioselectivity with MPOA or MPA
青霉素G酰胺酶。已显示已有效地选择性地酰化用于合成头孢菌素抗生素洛拉卡培的顺式外消旋氮杂环丁酮中间体的(2R,3S)异构体。使用苯乙酸甲酯(MPA)和苯氧乙酸甲酯(MPOA)作为酰化剂进行酰化。该酶显示出与MPOA或MPA相似的对映选择性。