[Studies on chemical constituents of Tibetan medicine Caryopteris toroetii].
OBJECTIVE
To study the chemical constituents of the Tibetan medicine Caryopteris toroetii.


METHODS
The crude drug was extracted with 95% EtOH and isolated by repeatedly chromatographic methods. The structures of the isolated compounds were elucidated by spectral analysis.


RESULTS
Six compounds were yielded and identified as: phenethyl cinnamide (1), 1-hydroxy-2, 3, 4, 5-tetramethoxy-xanthone (2), 1-hydroxy-2, 3, 5-trimethoxy-xanthone (3), (2S)-5-hydroxy-7-methoxyflavanone (4), 2', 4'-dihydroxydihydrochalcone (5) and rutin (6).


CONCLUSIONS
All the above compounds were obtained from C. toroetii for the first time.
Que
Sheng
S
Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100083, China.
Zhao
Yu-ying
YY
Zhang
Qing-ying
QY
D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D000431:Ethanol; D019686:Lamiaceae / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D012431:Rutin / Q000737:chemistry
D004365:Drugs, Chinese Herbal; D000431:Ethanol; D012431:Rutin