[Studies on chemical constituents from Grewia biloba].
OBJECTIVE
To investigate the chemical constituents of Grewia biloba and find its bioactive compounds.


METHODS
Compounds were isolated by silica gel, MCI, Sephadex LH-20 and Rp-18 column chromatography, and purified by recrystallization. Their structures were elucidated by spectral analysis and other methods.


RESULTS
Six compounds were isolated and identified as friedelin (1) epi-friedelan-3-ol (2), heneicosanoic acid (3), beta-sitosterol (4), Propyl palmitate (5), eatechin (6), respectively.


CONCLUSIONS
Compounds 1-3, 5, 6 are isolated from Grewia genus for the first time and compounds 4 is isolated from Grewia biloba for the first time.
Liu
Jian-Qun
JQ
Key Laboratory of Modern Preparation of TCM, Ministry of Education, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China. liu5308@sina.com
Wu
Ji-Mei
JM
Kou
Xiao-Li
XL
Hong
Qin
Q
D005227:Fatty Acids / Q000737:chemistry / Q000302:isolation & purification*; D032382:Grewia / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D010168:Palmitates / Q000737:chemistry / Q000302:isolation & purification*; D024301:Plant Bark / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D012855:Sitosterols / Q000737:chemistry / Q000302:isolation & purification; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*; D000094042:Lupanes
D005227:Fatty Acids; D010168:Palmitates; D012855:Sitosterols; D014315:Triterpenes; C419506:friedelan-3-ol; C025473:gamma-sitosterol; C060796:friedelin; D000094042:Lupanes; C517970:heneicosanoic acid