Two en-kaurene diterpenoids from Tibetan medicine Caryopteris toroetii
Que, S.; Zhao, Y.; Zhou, Y.; Zhang, Q.
Zhongguo Zhong Yao Za Zhi 34(12): 1523-1526
2009
ISSN/ISBN: 1001-5302 PMID: 19777838 Document Number: 633115
To study the chemical constituents of Tibetan medicine Caryopteris toroetii. The crude drug was extracted with 95% EtOH and isolated by repeated chromatographic methods. The structures of the isolated compounds were elucidated on the basis of spectral analysis. Two en-kaurene diterpenoid compounds: oridonin (1) and nodosin (2), were obtained from C. toroetii and their 1H and 13C-NMR data in CD3OD were reported for the first time. The en-kaurene diterpenoid compounds were obtained from genus Caryopteris for the first time.