Zhongguo Zhongyao Zazhi 2009-Jun
[Two en-kaurene diterpenoids from Tibetan medicine Caryopteris toroetii].
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OBJECTIVE
To study the chemical constituents of Tibetan medicine Caryopteris toroetii.
METHODS
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.
RESULTS
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.
CONCLUSIONS
The en-kaurene diterpenoid compounds were obtained from genus Caryopteris for the first time.
