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Three New Benzophenone Glucosides from the Leaves of Planchonella obovata

✍ Scribed by Shoei-Sheng Lee; Chang-Cheng Tseng; Chien-Kuang Chen

Publisher
John Wiley and Sons
Year
2010
Tongue
German
Weight
192 KB
Volume
93
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

Chemical investigation of the EtOH extract of the leaves of Planchonella obovata resulted in the isolation of four benzophenone glucosides, 1–4, of which three, 2–4, are new chemical entities together with five known flavonol glycosides. Their structures were elucidated by spectroscopic analysis. Among the isolated compounds, iriflophenone 2‐O‐(2,6‐di‐O‐galloyl)‐β‐D‐glucopyranoside (4) showed some activity (91.4 and 15.0% inhibition at 100 and 10 μg/ml, resp.) against the α‐glucosidase of Bacillus stearothermophilus.

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