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A new xanthone from Garcinia nitida

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-dimethylpyranol[2',3':2,3]-xanthone(1),inophyllin B (2), osajaxanthone (3), 3-isomangostin(4 ) and rubraxanthone (5). The structures of these compo...

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Bibliographic Details
Main Authors: Awang, K., Ee, G.C.L., Foo, C.H., Jong, V.Y.M., Ismail, N.H., Sukari, M.A., Taufiq Yap, Y.H.
Format: Article
Language:English
Published: Taylor & Francis 2012
Subjects:
QD Chemistry
Online Access:http://eprints.um.edu.my/10457/1/A_new_xanthone_from_Garcinia_nitida.pdf
http://eprints.um.edu.my/10457/
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Summary: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-dimethylpyranol[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 l-D and 2-D NMR spectroscopy(¹H,¹³C, DEPT,COSY, HMBC and HMQC) while molecular masses were determined via MS techniques;1 is a new compound.

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