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Two new iridoid glycosides from the root barks of Sambucus williamsii Hance
Hai-Xue Kuang1, Hua Han, Bing-You Yang
1Key Laboratory of Chinese Materia Medica, Heilongjiang University of Chinese Medicine, Ministry of Education, Harbin 150040, China. hxkuang@hotmail.com
Molecules (Basel, Switzerland)
|February 15, 2012
Abstract:
Two new iridoid glycosides, named williamsoside C (1) and williamsoside D (2) were isolated from the root barks of Sambucus williamsii Hance. Their structures were established on the basis of extensive spectroscopic analysis (1D, 2D NMR and HRESIMS) and chemical studies as α-D-glucopyranosyl (1→2)-β-D-fructofuranosyl (4→6)-β-morroniside (1) and 7β-O-ethyl morroniside-(6'-O-7'')-β-morroniside (2), respectively.
