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Natural Product Research
Formerly Natural Product Letters
Volume 21, 2007 - Issue 6
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Original Articles

Constituents of Cissus quadrangularis

, &
Pages 522-528 | Received 18 Oct 2006, Published online: 11 May 2007
 

Abstract

Two new iridoids 6-O-[2,3-dimethoxy]-trans-cinnamoyl catalpol (1) and 6-O-meta-methoxy-benzoyl catalpol (2) along with a known iridoid picroside 1 (3), two stilbenes quadrangularin A (4) and pallidol (5), quercitin (6), quercitrin (7), β-sitosterol (8) and β-sitosterol glycoside (9) were isolated from Cissus quadrangularis Linn. The compounds 3 and 7 are first reported from this plant. The structures were elucidated by analysis of their spectroscopic data and by direct comparison with literature. This is the first reported occurrence of iridoids in C. quadrangularis.

†CDRI Communication No. 7041.

Acknowledgements

Financial support for this work was provided by the DBT, New Delhi.

Notes

†CDRI Communication No. 7041.

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