[Studies on chemical constituents of Dioscorea opposita].
OBJECTIVE
To study the chemical constituents of Dioscorea opposita.


METHODS
The chemical constituents were isolated and purified by silica gel column chromatography, and the structures were elucidated by their spectroscopic data and physico-chemical properties.


RESULTS
Twelve compounds were obtained and identified as palmitic acid (1), beta-sitosterol (2), oleic acid (3), beta-sitosterol acetate (4), 5-(hydroxymethyl)furfural (5), nonanedioic acid (6), beta-daucosterol (7), cyclo-(Phe-Tyr) (8), cyclo-(Tyr-Tyr) (9), 6-methyl citrate (10), 1, 5-dimethyl citrate (11), trimethyl citrate (12).


CONCLUSIONS
Compounds 3-12 were isolated from this plant for the first time and cyclodipeptides were firstly isolated from the Dioscoreae family; Compound 9 was a new natural product.
Bai
Bing
B
Henan University, Key Lab of Natural Drug and Immune Engineering of Henan Province, College of Chemistry and Chemical Engineering, Kaifeng 475001, China.
Li
Ming-Jing
MJ
Wang
Yong
Y
Liu
Xiu-Hua
XH
D002850:Chromatography, Gel; D027742:Dioscorea / Q000737:chemistry*; D004365:Drugs, Chinese Herbal / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry
D004365:Drugs, Chinese Herbal