[Studies on chemical constituents in bulbs of Bolbostemma paniculatum].
OBJECTIVE
To investigate the chemical constituents of the bulbs of Bolbostemma panicultum.


METHODS
The compounds were isolated by column chromatography on silica gel, C18, Sephadex LH-20 separately and their structures were elucidated by chemical and spectroscopic technologies.


RESULTS
Eight compounds were isolated and identified as maltol(I), emodin(II), cucurbitacin B(III), cucurbitacin E(IV), stigmasta-7, 22, 25-triene-3-ol(V), stigmasta-7, 22, 25-triene-3-nonadecanoic acid ester(VI), stigmasta-7, 22, 25-triene-3-O-beta-D-glucopyranoside(VII), stigmasta-7, 22, 25-triene-3-O-beta-D-(6'-palmitoyl) glucopyranoside(VIII).


CONCLUSIONS
I-VIII were obtained from this plant for the first time; VI and VIII are new compounds.
Liu
Wen-yong
WY
College of Pharmacy, Second Military Medical University, Shanghai 200433, China.
Chen
Wei-guang
WG
Zhang
Wei-dong
WD
Chen
Hai-sheng
HS
Gu
Zheng-bing
ZB
Li
Ting-zhao
TZ
D019662:Cucurbitaceae / Q000737:chemistry*; D004642:Emodin / Q000737:chemistry / Q000302:isolation & purification; D015394:Molecular Structure; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D013265:Stigmasterol / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification*; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification
D012503:Saponins; D014315:Triterpenes; C500370:stigmasta-7,22,25-triene-3-O-(6'-palmitoyl)glucopyranoside; C500369:stigmasta-7,22,25-triene-3-nonadecanoic acid ester; C041246:cucurbitacin B; D013265:Stigmasterol; D004642:Emodin