Regioselective enzymic deacetylation of octa-O-acetyl-sucrose: preparation of hepta-O-acetylsucroses
作者:Kung-Yao Chang、Shih-Hsiung Wu、Kung-Tsung Wang
DOI:10.1016/0008-6215(91)89011-4
日期:1991.12
Deacetylation of octa-O-acetylsucrose (1) with Alcalase or protease N gave the 2,3,4,6,3',4',6'-hepta-acetate (2) as the initial major product with the 2,3,4,6,3',4'-hexa-acetate (3) as the subsequent main product. The 2,3,4,1',3',4',6'-hepta-acetate (5) was obtained from 1 by the action of lipase OF or lipase AP6, and the 2,3,4,6,1',3',6'-(4) and 2,3,4,6,1',3',4'-hepta-acetate (7) by the action of
用Alcalase或
蛋白酶N使八-O-乙酰基
蔗糖(1)脱乙酰化,得到2,3,4,6,3',4',6'-
庚酸酯(2)为初始主要产物,其中2,3 ,4,6,3',4'-六
乙酸酯(3)作为后续的主要产物。2,1,2,3,4,1',3',4',6'-
庚酸酯(5)是通过
脂肪酶OF或
脂肪酶AP6的作用从1,以及2,3,4,6,1 ',3',6'-(4)和2,3,4,6,1',3',4'-七
乙酸酯(7)分别通过念珠菌
脂肪酶和胰凝乳
蛋白酶作用。2,5,6,1',3',4',6'-
庚酸酯(6)由5通过酰基转移形成。