[Triterpenoid saponins from flower bud of Jasminum officinale var. grandiflorum].
OBJECTIVE
To study the chemical constituent bud of the flowers of Jasminum officinale var. grandiflorum.


METHODS
The compounds were isolated and purified by recrystallization and chromatography on silica gel and Sephadex LH - 20 column. Their structures were elucidated on the basis of physicochemical properties and spectral analysis.


RESULTS
Six triterpenoid saponins were identified as 3-O-alpha-L-rhamnopyranosyl (1 --> 2)-beta-D-xylopyranosyl- hederagenin-28-O-beta-D-galactopyranosyl (1 --> 6)-beta-D-galactopyranosyl ester (1), hederagenin-3-O-beta-D-glucopyranosyl (1 --> 3)-alpha-L-arabinopyranoside (2), 2alpha, 3beta, 23-trihydroxyolean-12-en-28-oic-O-beta-D-glucopyranosyl ester (3), hederagenin-3-O-beta-D-xylopyranosyl (1 --> 3)-alpha-L-rhamnopyranosyl (1 --> 2)-alpha-L-arabinopyranoside (4), 2alpha, 3beta, 23-trihydroxyolean-12-en-28-oic-O-alpha-L-rhamnopyranosyl (1 --> 4)-beta-D-glucopyranosyl (1 --> 6)-beta-D-glucopyranosyl ester (5), hederagenin-3-O-alpha-L-rhamnopyranosyl (1 --> 2)-alpha-L-arabinopyranoside (6).


CONCLUSIONS
Compound 1 is a new compound. Compounds 2, 3, 4, 5, 6 were isolated from the genus Jasminum for the first time.
Zhao
Gui-Qin
GQ
Institute of Radiation Medicine, Academy of Military Medical Science, Beijing 100850, China.
Dong
Jun-Xing
JX
D002850:Chromatography, Gel; D004365:Drugs, Chinese Herbal / Q000737:chemistry* / Q000302:isolation & purification; D035264:Flowers / Q000737:chemistry*; D031660:Jasminum / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D012503:Saponins / Q000737:chemistry* / Q000302:isolation & purification; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification
D004365:Drugs, Chinese Herbal; D012503:Saponins; D014315:Triterpenes