NEW LINEAR PYRANOXANTHONES FROM CALOPHYLLUM-APETALUM

Authors
IINUMA M ITO T TOSA H TANAKA T MIYAKE R CHELLADURAI V
Citation
M. Iinuma et al., NEW LINEAR PYRANOXANTHONES FROM CALOPHYLLUM-APETALUM, Heterocycles, 45(2), 1997, pp. 299-307
Citations number
16
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Heterocycles → ACNP
ISSN journal
03855414
Volume
45
Issue
2
Year of publication
1997
Pages
299 - 307
Database
ISI
SICI code
0385-5414(1997)45:2<299:NLPFC>2.0.ZU;2-3
Abstract
The investigation of chemical constituents in stem bark and root of Ca lophyllum apetalum (Guttiferae) led to isolate sixteen xanthones and t wo coumarin derivatives. Among them, two linear pyranoxanthones [calox anthones I (1) and J (2)] from the stem bark, and two xanthones [calox anthone K (10) and 1,3,6,8-trihydroxy-2-methoxyxanthone (12)] from the root were new ones. The respective structures were determined by the spectral analysis.