Journal
CARBOHYDRATE RESEARCH
Volume 335, Issue 4, Pages 245-250Publisher
ELSEVIER SCI LTD
DOI: 10.1016/S0008-6215(01)00236-1
Keywords
gallotannin; 3-O-galloyl-D-glucose; 6-O-galloyl-D-glucose; 3,6-Di-O-galloyl-D-glucose; 3,4,6-Tri-O-galloyl-D-glucose
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As a contribution to the synthesis of gallotannins, four O-galloyl-D-glucoses (3-O-, 6-O-, 3,6-di-O-, 3,4,6-tri-O-galloyl-D-glucose) have been prepared by the reaction of tri-O-benzylgalloyl chloride and partially protected glucose derivatives (1,2-O-, and 1,2:5,6-di-O-isopropylidene-alpha -D-glucofuranose), followed successively by catalytic debenzylation (Pd-C) and controlled acid hydrolysis. Their structures were established from their behavior on TLC and from their H-1 and C-13 NMR spectra. (C) 2001 Published by Elsevier Science Ltd.
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