Novel cycloartane saponins from Corchorus depressus L.
Two novel bidesmosidic cycloartane-type glycosides, depressosides C and D were isolated from Corchorus depressus L. Their structures were elucidated as (22R)-16beta,22-epoxy-3beta,26-dihydroxy-9,19-cyclolanost-++ +24E-ene 3, 26-di-O-beta-D-glucopyranoside and (22R,24S)-22,25-epoxy-3beta,16beta,24-trihydroxy-9,19-cyclolano stane 3, 24-di-O-beta-glucopyranoside, respectively on the basis of chemical evidence and detailed spectroscopic studies.
Ahmad
V U
VU
International Center for Chemical Sciences, HEJ Research Institute of Chemistry University of Karachi, Pakistan. viqar@khi.comsats.net.pk
Ali
A
A
Ali
Z
Z
Zafar
F N
FN
Zahid
M
M
D002852:Chromatography, Ion Exchange; D006868:Hydrolysis; D009682:Magnetic Resonance Spectroscopy; D010154:Pakistan; D010936:Plant Extracts; D010946:Plants, Medicinal / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry* / Q000302:isolation & purification; D016339:Spectrometry, Mass, Fast Atom Bombardment; D014315:Triterpenes
D010936:Plant Extracts; D012503:Saponins; D014315:Triterpenes; C421524:depressoside C; C421523:depressoside D