[Chalcones from Bauhinia glauca subsp. pernervosa].
OBJECTIVE
To study the chemical constituents of Bauhinia glauca subsp. pernervosa.


METHODS
The coulis of B. glauca subsp. pernervosa were extracted with 95% EtOH at room temperature. The compounds were isolated and separated by chromatographic techniques, and structures were identified by spectroscopic methods.


RESULTS
Seven chalcones were isolated and identified: butein-4-methyl ether (1), isoliquiritigenin (2), butein (3), isoliquiritigenin-2'-methyl ether (4), 2',4'-dihydroxychalcone (5), isoliquiritigenin-4-methyl ether (6), 4-hydroxy-2',4'-dimethoxychalcone (7).


CONCLUSIONS
Compounds 1, 3, and 7 were isolated from the genus Bauhinia for the first time, the other compounds were obtained from this plant for the first time.
Wu
Zengbao
Z
Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, China.
Wang
Bin
B
Zhao
Yuying
Y
Yang
Xiuwei
X
Liang
Hong
H
D036481:Bauhinia / Q000737:chemistry*; D047188:Chalcones / Q000737:chemistry* / Q000302:isolation & purification; D004365:Drugs, Chinese Herbal / Q000737:chemistry* / Q000302:isolation & purification
D047188:Chalcones; D004365:Drugs, Chinese Herbal