Triterpenoids from Dysoxylum malabaricum

  • Phytochemistry. 2001 Feb;56(4):331-4. doi: 10.1016/s0031-9422(00)00413-1.
A Hisham  1 ,  A Bai ,  G JayaKumar ,  M S Nair ,  Y Fujimoto
Affiliations
  • 1. Department of Chemistry, College of Science, Sultan Qaboos University, Al-khode, Oman. [email protected]
PMID: 11249096 DOI: 10.1016/s0031-9422(00)00413-1
Abstract

Two Triterpenes 21R,23R-epoxy-21alpha-ethoxy-24S,25-dihydroxyapotirucall-7-en-3-one and 24R-acetoxy-3beta,25-dihydroxycycloartane were isolated from the leaves of Dysoxylum malabaricum together with eight known compounds lupeone, lupeol. sitosterol, dipterocarpol, cycloart-25-ene-3beta,24-diol, 24R,25-dihydroxycycloartan-3-one, 3beta,24R,25-trihydroxycycloartane and ergosta-5,24(24(1))-diene-3beta,4beta,20S-triol. The complete 1H and 13C NMR spectral assignment of the new apotirucallene triterpenoid has been achieved by 1H-1H COSY, HMQC and HMBC experiments.

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