Regioselective enzymatic acylation of troxerutin in nonaqueous medium
作者:Yong Mei Xiao、Pu Mao、Zhen Zhao、Liang Ru Yang、Xian Fu Lin
DOI:10.1016/j.cclet.2009.08.017
日期:2010.1
A series of monosubstituted troxerutin esters have been synthesized by enzyme-catalyzed regioselective acylation of troxerutin in nonaqueous medium. Using divinyl dicarboxylates (CH2 CH-OOC-(CH2)(n)-COO-CH CH2, n = 2, 3, 4, 7, 8, 11) featuring different chain length as acyl donors and alkaline protease from Bacillus subtilis as catalyst, troxerutin was regioselective acylated at B' ethoxyl group. The results indicated that the regioselectivity of the enzyme-catalyzed acylation was not affected by the chain length of the acyl donor. (C) 2009 Yong Mei Xiao. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.