title: Two new iridoid glycosides from the root barks of Sambucus williamsii Hance.
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.
authors.affiliation: Key Laboratory of Chinese Materia Medica, Heilongjiang University of Chinese Medicine, Ministry of Education, Harbin 150040, China. hxkuang@hotmail.com
authors.forename: Hai-Xue
authors.initials: HX
authors.lastname: Kuang
authors.forename: Hua
authors.initials: H
authors.lastname: Han
authors.forename: Bing-You
authors.initials: BY
authors.lastname: Yang
authors.forename: Liu
authors.initials: L
authors.lastname: Yang
authors.forename: Hai
authors.initials: H
authors.lastname: Jiang
authors.forename: Qiu-Hong
authors.initials: QH
authors.lastname: Wang
mesh_terms: D057888:Iridoid Glucosides / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D018517:Plant Roots / Q000737:chemistry*; D021241:Spectrometry, Mass, Electrospray Ionization
chemical_list: D057888:Iridoid Glucosides