New Indole Alkaloids from Amsonia sinensis.
Fourteen indole alkaloids, Delta (14)-isoeburnamine ( 1), amsosinine ( 2), tabersonine, vincadifformine, lochnericine, tetrahydroalstonine, beta-yohimbine, isoeburnamine, minovicinine, picrinine, strictamine, rhazimine, vincanidine, and decarbomethoxytetrahydrosecamine, were isolated from AMSONIA SINENSIS. Delta (14)-isoeburnamine ( 1) and amsosinine ( 2) are new compounds, their structures have been established by spectral and chemical methods. A known sterol glycoside, daucosterol, has also been obtained. The structures of compounds 1 and 2 were finally confirmed by X-ray diffraction of single crystals.[1]References
- New Indole Alkaloids from Amsonia sinensis. Liu, H.M., Wu, B., Zheng, Q.T., Feng, X.Z. Planta Med. (1991) [Pubmed]
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