Substrate specificity and enantioselectivity of penicillinacylase catalyzed hydrolysis of phenacetyl esters of synthetically useful carbinols
作者:Claudio Fuganti、Piero Grasselli、Stefano Servi、Ameriga Lazzarini、Paolo Casati
DOI:10.1016/s0040-4020(01)81708-7
日期:1988.1
Penicillinacylase from , immoblized on Eupergit C beads catalyzes the hydrolysis in water/CH3CN 10:1, at pH 7.5 and 23° C, of a set of O-phenylacetate esters of primary carbinols. The highest enantioselectivity is observed in the case of the 2,2-dimethyl-1,3-dioxolane-4-methanols structurally related to the penicillin (1) framework. Minor modifications of this basic structure are not altering the acceptability
固定在Eupergit C珠上的青霉素酰化酶催化在水/ CH 3 CN 10:1中在pH 7.5和23°C下水解一系列邻苯甲醇的邻苯乙酸酯。在与青霉素(1)骨架结构相关的2,2-二甲基-1,3-二氧戊环-4-甲醇中观察到最高的对映选择性。对这种基本结构的微小修饰不会改变酶的可接受性,但会显着降低水解的对映选择性,就像使用苯作为溶剂和与琼脂糖结合的酶一样。