Vanillic acid 4-O-ß-D-(-O-Galloyl) Glucopyranoside and other constituents from the bark of Terminalia macroptera Guill. et Perr

Publication Type
Journal contribution
Authors
Conrad, J.; Vogler, B.; Klaiber, I.; Reeb, S.; Guse,J.-H.; Roos, G.; Kraus, W.
Year of publication
2001
Published in
Nat. Prod. Lett.
Band/Volume
15/1
ISBN / ISSN / eISSN
1057-5634
Page (from - to)
35-42
Keywords
antimicrobial activity, Combretaceae, Terminalia macroptera, triterpene glucopyranosyl esters
Abstract

A new phenolic glucoside gallate, vanillic acid 4-O-b-D-(6¿-O-galloyl) glucopyranoside (1) was isolated from the bark of Terminalia macroptera Guill.et Perr., together with 3,3¿,4¿-tri-O-methylellagic acid (2) and two triterpene glucopyranosyl esters, 24-deoxy-sericoside (3) and chebuloside II (4). Compounds 2-4, not described previously for this plant, showed antimicrobial activities against Bacillus subtilis, while 3 and 4 possessed haemolytic properties. In both assays 1 was found to be inactive.

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