A new xanthone from Garcinia nitida.

نویسندگان

  • G C L Ee
  • C H Foo
  • V Y M Jong
  • N H Ismail
  • M A Sukari
  • Y H Taufiq Yap
  • K Awang
چکیده

A detailed chemical study on the stem bark of Garcinia nitida has led to the isolation of five xanthones. They are 1,6-dihydroxy-5-methoxy-6,6-dimethylpyrano[2',3':2,3]-xanthone (1), inophyllin B (2), osajaxanthone (3), 3-isomangostin (4) and rubraxanthone (5). The structures of these compounds were established using mainly 1-D and 2-D NMR spectroscopy ((1)H, (13)C, DEPT, COSY, HMBC and HMQC) while molecular masses were determined via MS techniques; 1 is a new compound.

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عنوان ژورنال:
  • Natural product research

دوره 26 9  شماره 

صفحات  -

تاریخ انتشار 2012