Regiospecific alkaline protease-catalyzed divinyl acyl transesterifications of primary hydroxyl groups of mono- and di-saccharides in pyridine
作者:Qi Wu、Na Wang、Yong-Mei Xiao、De-Shui Lu、Xian-Fu Lin
DOI:10.1016/j.carres.2004.06.013
日期:2004.8
This paper describes highly selective transesterification reactions, catalyzed by an alkaline protease from Bacillus subtilis in pyridine, of several mono- and di-saccharides with divinyl dicarboxylates ranging from 4 to 10 carbon atoms. A series of polymerizable vinyl fatty acid sugar esters were obtained with good selectivity and high yields. Most products had high proportions of the alpha anomer
Highly Anomer- and Regio-selective Transesterification Catalyzed by Alkaline Protease from<i>Bacillus subtilis</i>in Organic Media
作者:Qi Wu、Deshui Lu、Yongmei Xiao、Shiping Yao、Xianfu Lin
DOI:10.1246/cl.2004.94
日期:2004.2
Highly anomer-selective-6(6')-acylation reactions from anomeric mixtures of several mono- and disaccharides with divinyl dicarboxylates ranging from 4 to 10 carbon atoms were catalyzed by an alkaline protease from Bacillus subtilis in pyridine. A series of new pure α-anomeric polymerisable vinyl sugar esters of dibasic acids were synthesized in good selectivity and yields.