| Literature DB >> 16083924 |
A Meli Lannang1, J Komguem, F Ngounou Ngninzeko, J Gustave Tangmouo, D Lontsi, Asma Ajaz, M Iqbal Choudhary, Rosa Ranjit, Krishna P Devkota, B Luc Sondengam.
Abstract
Two xanthones, bangangxanthone A (1) [1,5,8-trihydroxy-6'-methyl-6'-(4-methylpent-3-enyl)- pyrano[2',3':3,4]xanthone] and B (2) [1,4,8-trihydroxy-2-prenylxanthone], along with two known xanthones, 1,5-dihydroxyxanthone, 2-hydroxy-1,7-dimethoxyxanthone and the pentacyclic triterpenoids, friedelin, oleanolic acid and lupeol were isolated from the chloroform extract of the stem bark of Garcinia polyantha. The structures of these compounds were assigned by spectroscopic analysis. Compounds 1-4 showed antioxidant DPPH radical scavenging activities.Entities:
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Year: 2005 PMID： 16083924 DOI： 10.1016/j.phytochem.2005.06.016
Source DB: PubMed Journal: Phytochemistry ISSN： 0031-9422 Impact factor: 4.072