Two new 18-en-oleane derivatives from marine mangrove plant, Barringtonia racemosa.
Two new triterpenoids, olean-18-en-3beta-O-E-coumaroyl ester (1) and olean-18-en-3beta-O-Z-coumaroyl ester (2), were isolated from the stem bark of marine mangrove plant Barringtonia racemosa, along with five known compounds, germanicol, germanicone, betulinic acid, lupeol, and taraxerol. Their structures were determined mainly by spectroscopic methods.
Yang
Yi
Y
State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Analytical and Testing Center2, Beijing Norma, People Republic of China.
Deng
Zhiwei
Z
Proksch
P
P
Lin
Wenhan
W
D031382:Barringtonia / Q000737:chemistry*; D002681:China; D003374:Coumarins / Q000737:chemistry*; D000431:Ethanol; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D009828:Oleanolic Acid / Q000031:analogs & derivatives* / Q000737:chemistry; D024301:Plant Bark / Q000737:chemistry; D010936:Plant Extracts / Q000494:pharmacology; D012997:Solvents; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013055:Spectrophotometry, Infrared
D003374:Coumarins; D010936:Plant Extracts; D012997:Solvents; C510456:olean-18-en-3beta-O-E-coumaroyl ester; C510455:olean-18-en-3beta-O-Z-coumaroyl ester; D000431:Ethanol; D009828:Oleanolic Acid