A new triterpenoid saponin from Pulsatilla cernua predicted by NMR-based mosaic method
An-Dong Wang1,2, Ying Bao2,3, Xia Wang1,2
1School of Traditional Chinese Medicine, Shenyang Pharmaceutical University, Shenyang, China.
Abstract:
A saponin (1) with gypsogenin as aglycone was isolated from the roots of Pulsatilla cernua. The aglycone of compound 1 was considered as gypsogenin which was rarely found in this genus. Its structure was predicted by NMR-based "mosaic" method rapidly, and further confirmed on the basis of spectroscopic data, including 2D NMR spectra and chemical evidence. This work suggested that NMR-based mosaic method is suitable for most of saponins from common species of genus Pulsatilla.
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