Natural Product Sciences

The Korean Society of Pharmacognosy (한국생약학회)
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A New Pyranoxanthone Inophyllin B from Calophyllum inophyllum

  • Ee, G.C.L. (Chemistry Department, Faculty of Science University Putra Malaysia) ;
  • Kua, A.S.M. (Chemistry Department, Faculty of Science University Putra Malaysia) ;
  • Cheow, Y.L. (Chemistry Department, Faculty of Science University Putra Malaysia) ;
  • Lim, C.K. (Chemistry Department, Faculty of Science University Putra Malaysia) ;
  • Jong, V. (Chemistry Department, Faculty of Science University Putra Malaysia) ;
  • Rahmani, M. (Chemistry Department, Faculty of Science University Putra Malaysia)
  • Published : 2004.10.30
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Abstract

A new prenylated pyranoxanthone, inophyllin B (1), was isolated from the roots of Calophyllum inophyllum (Guttiferae). Together with this compound was also isolated the known pyranoxanthone brasilixanthone B (2) and two common triterpenes friedelin (3) and sitosterol (4). Structural elucidations of these compounds were achieved through $^1H,\;^{13}C$, DEPT, COSY, HSQC and HMBC experiments. The molecular mass was determined using MS techniques. The crude extract indicated weak toxicity to the larvae of Aedes aegypti. We report here the isolation, structural elucidation and bioassay data for Inophyllin B and brasilixanthone B.

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References

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