FOETIDISSIMOSIDE A, A NEW 3,28-BIDESMOSIDIC TRITERPENOID SAPONIN, AND CUCURBITACINS FROM CUCURBITA FOETIDISSIMA

Article abstract of DOI:10.1016/0031-9422(88)84112-8

Key Word Index-Cucurbita foetidissima; Cucurbitaceae; 3,28-bidesmosidic triterpene saponin; cucurbitacins; structure analysis.A new 3,28-bidesmosidic triterpenoid saponin, foetidissimoside A, was isolated from the roots of Cucurbita foetidissima and its structure established as echinocystic acid 3-O-β-D-glucuropyranoside 28-O-<β-D-xylopyranosyl (1<*>4α-L-rhamnopyranosyl(1<*>2)>-α-L-arabinopyranoside mainly by (1)H NMR, (13)C NMR, GC/MS and FABMS analyses.Cucurbitacin B and E with their glucosides, cucurbitacin D and isocucurbitacin B were identified by HPLC analysis.