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Variabilin, a 6a-hydroxypterocarpan fromDalbergia variabilis

Authors
Journal
Phytochemistry
0031-9422
Publisher
Elsevier
Publication Date
Volume
17
Issue
8
Identifiers
DOI: 10.1016/s0031-9422(00)94600-4
Keywords
  • Dalbergia Variabilis
  • D. Frutescens
  • Leguminosae-Lotoideae
  • Isoflavans
  • Isoflavones
  • Pterocarpans.

Abstract

Abstract Bark and wood of the creeper Dalbergia variabilis contain the previously described friedelin, O-acetyl-oleanolic acid, formononetin, 8- O-methylretusin, (+)-vestitol, (±)-mucronulatol, (+)- and (±)-medicarpin, besides (+)-variabilin [(6a R,11a R)-6a-hydroxy-3,9-dimethoxypterocarpan]. This structure was confirmed by the conversion of (+)-variabilin into di- O-methylcoumestrol.

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