Isolation of phytoconstituents from the flowers of <em>Couroupita guianensis</em>

709-713Couroupita guianensis is used extensively as an ingredient in many Ayurveda preparations which cure gastritis, scabies, bleeding piles, dysentery, and scorpion poison. The flower has been subjected to sequential extraction using petroleum ether, chloroform, ethyl acetate and methanol solvents. A new compound I Cycloart-24-en-3-ol-4'-exomethylene heptadeconate along with stigmasterol II, p-coumaric acid III, o-coumaric acid IV, caffeic acid V and quercetin VI have been isolated by column chromatography and characterised using IR, 1H and 13C&nbsp;NMR and MS spectral data. Compound I, III, IV and V are reported for the first time from C. guianensis