Proceedings of the Indian Academy of Sciences - Chemical Sciences

, Volume 88, Issue 5, pp 323-327

First online:

Oroxindin—A new flavone glucuronide fromOroxylum indicum Vent

  • A. G. Ramachandran NairAffiliated withJawaharlal Institute
  • , B. S. JoshiAffiliated withJawaharlal InstituteCiba-Geigy Research Centre

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From the ethanol extract of the seeds ofOroxylum indicum a new flavone glucuronide named oroxindin has been isolated. Based on chemical as well as UV, IR, PMR and mass spectral data oroxindin has been constituted as 5-hydroxy-8-methoxy-7-0-β-D-glucopyranuronosyl flavone (wogonin-7-0-β-D-glucuronide).


Flavone glucuronide Oroxylum indicum Bignoniaceae wogonin-7-0-β-D-glucuronide PMR spectrum of lactone acetate