期刊
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
卷 19, 期 16, 页码 4684-4687出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.bmcl.2009.06.074
关键词
Ulmus wallichiana; Flavonoid-6-C-glycosides; Osteogenic; Osteoblast; Differentiation
资金
- CSIR, New Delhi
- Department of Biotechnology, Government of India
Chemical investigation of Ulmus wallichiana stem bark resulted in isolation and identification of three new compounds (2S,3S)-(+)-3',4',5,7-tetrahydroxydihydroflavonol-6-C-beta-D-glucopyranoside (1), (2S,3S)-(+)-4',5,7-trihydroxydihydroflavonol-6-C-beta-D-glucopyranoside (3) and 3-C-beta-D-glucopyranoside-2,4,6-trihydroxymethylbenzoate (8), together with five known flavonoid-6-C-glucosides (2, 4-7). Their structures were elucidated using 1D and 2D NMR spectroscopic analysis. The absolute stereochemistry in compounds 1 and 3 were established with the help of CD data analysis and comparison with the literature data analysis. All the isolated compounds (1-8) were assessed for promoting the osteoblast differentiation using primary culture of rat osteoblast as an in vitro system. Compounds 1-3 and 5 significantly increased osteoblast differentiation as assessed by alkaline phosphatase activity. (C) 2009 Elsevier Ltd. All rights reserved.
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