title: Two new iridoid glycosides from the root barks of Sambucus williamsii Hance.
abstract: Chemical investigation of the ethanol extract of the root barks of Sambucus williamsii Hance collected in the Heilongjiang province of China resulted in the isolation of two new iridoid glycosides, williamsoside A (1) and williamsoside B (2). Their structures were elucidated on the basis of extensive spectroscopic analysis (1D, 2D-NMR and HRESIMS) and chemical studies. Iridoid glycosides have for a long time been considered as characteristic ingredients of S. williamsii. However, the presence of iridoid glycosides with apiofuranosyl moieties in S. williamsii is reported for the first time in this study.
authors.affiliation: Key Laboratory of Chinese Materia Medica, Heilongjiang University of Chinese Medicine, Ministry of Education, Harbin 150040, China.
authors.forename: Zhen-Yue
authors.initials: ZY
authors.lastname: Wang
authors.forename: Hua
authors.initials: H
authors.lastname: Han
authors.forename: Bing-You
authors.initials: BY
authors.lastname: Yang
authors.forename: Yong-Gang
authors.initials: YG
authors.lastname: Xia
authors.forename: Hai-Xue
authors.initials: HX
authors.lastname: Kuang
mesh_terms: D057889:Iridoid Glycosides / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D024301:Plant Bark / Q000737:chemistry*; D018517:Plant Roots / Q000737:chemistry*; D027923:Sambucus / Q000737:chemistry*
chemical_list: D057889:Iridoid Glycosides