Direct aqueous synthesis of non-protected glycosyl sulfoxides; weak inhibitory activity against glycosidases
摘要:
A flavinium catalyst, in conjunction with hydrogen peroxide as stoichiometric oxidant, allowed the aqueous conversion of non-protected thioglycosides into the corresponding glycosyl sulfoxides. These glycosyl sulfoxides displayed only very weak inhibitory activity against corresponding glycosidases. (C) 2015 Elsevier Ltd. All rights reserved.
Galactosylation by use of β-galactosidase: Chemo-enzymatic syntheses of di- and trisaccharides
作者:Wolfgang H. Binder、Hanspeter Kählig、Walther Schmid
DOI:10.1016/s0040-4020(01)89581-8
日期:1994.1
of various galactose containing disaccharides has been achieved by utilizing the transgalactosylation potential of β-galactosidase from Aspergillus oryzae. Thus, using p- nitrophenyl-β-D-galactoside 1 as galactosyl donor, thio-glucosides 2a-c, thio-galactosides 5a, 5b and pent-4-enyl-glucoside 2d have proved to be useful acceptors for the enzyme catalyzed disaccharide formation. We further demonstrated