Regioselective enzymatic deacylation of sucrose esters in anhydrous organic media
申请人:McNEIL-PPC, INC.
公开号:EP0610063A2
公开(公告)日:1994-08-10
A process for the preparation of partially acylated derivatives of sucrose by the enzyme catalyzed deacylation of sucrose esters, wherein said process comprises treating a sucrose ester selected from the group consisting of sucrose octaacylate, sucrose heptaacylate, and sucrose hexaacylate in an anhydrous organic medium, with an enzyme or combination of enzymes capable of catalyzing the deacylation of said sucrose ester to produce a partially deacylated sucrose derivative having free hydroxyl group(s) in pre-selected position(s), and recovering the resulting partially deacylated sucrose derivative.
Franzkowiak, Monika; Thiem, Joachim, Liebigs Annalen der Chemie, 1987, p. 1065 - 1072
作者:Franzkowiak, Monika、Thiem, Joachim
DOI:——
日期:——
Further examples of orthoesterification under kinetically controlled conditions application to the selective acylation of sucrose, maltose and α,α-trehalose
作者:Mohamed Bouchra、Jacques Gelas
DOI:10.1016/s0008-6215(97)00208-5
日期:1997.12
Orthoesterification of sucrose with 1,1-dimethoxyethene under kinetic control gave 4,6-O-methoxyethylidenesucrose in 77% crude yield. Similar orthoesterification of maltose led essentially after acetylation to 1,2,3,6,2',3'-hexa-O-acetyl-4'-6'-O-methoxyethylidenemaltose. Analogous treatment of alpha,alpha-trehalose gave 2,3,2',3'-tetra-O-acetyl-4,6:4',6'-di-O-methoxyethylidene-alpha,alpha-trehalose in 47% yield. The acid-catalyzed opening of these orthoesters was studied, and these reactions were shown to give disaccharides selectively protected by acetyl groups. (C) 1998 Elsevier Science Ltd.