Constituents of Cissus quadrangularis.
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), beta-sitosterol (8) and beta-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.
Singh
Geetu
G
Medicinal and Process Chemistry Division, Central Drug Research Institute, Lucknow, India.
Rawat
Preeti
P
Maurya
Rakesh
R
D032422:Cissus / Q000737:chemistry*; D039823:Iridoids / Q000737:chemistry* / Q000302:isolation & purification*; D015394:Molecular Structure; D018547:Plant Stems / Q000737:chemistry
D039823:Iridoids