Application of aminoacylase I to the enantioselective resolution of α-amino acid esters and amides
作者:Maxim I Youshko、Luuk M van Langen、Roger A Sheldon、Vytas K Švedas
DOI:10.1016/j.tetasy.2004.05.018
日期:2004.6
Aminoacylase I from Aspergillus melleus, a readily available and inexpensive enzyme mainly used in the industrial production of enantiopure l-amino acids from their N-acetyl derivatives, is shown to hydrolyze the esters and amides of natural and non-natural amino acids with high enantioselectivity (for the ester hydrolysis, E is up to 76, in case of amides E >300). The reaction rates of amide and ester
来自米曲霉的氨酰基酶I是一种容易获得且便宜的酶,主要用于从其N-乙酰基衍生物工业生产对映纯I-氨基酸,该酶具有高对映选择性,可水解天然和非天然氨基酸的酯和酰胺(对于酯水解,如果酰胺E > 300 ,则E最高为76 )。酰胺和酯水解的反应速率是可比的,并且在某些情况下,这些转化的进行速度甚至比“传统”氨酰酶催化的N水解更快。因此,β-乙酰基衍生物为拆分相应的外消旋物提供了新的可能性。这种新颖的方法为光学活性氨基酸及其衍生物的生物催化生产提供了另一种途径。