title: Two new furostanol glycosides from the fibrous root of Ophiopogon japonicus (Thunb.) Ker-Gawl.
abstract: Two new furostanol glycosides, ophiopogonins H (1) and I (2), were isolated from the fibrous root of Ophiopogon japonicus. The structures of 1 and 2 were established as (25R)-26-[(O-β-D-glucopyranosyl-(1→2)-β-D-glucopyranosyl)]-22α-hydroxyfurost-5-ene-3-O-[α-L-rhamnopyranosyl-(1→2)]-β-D-glucopyranoside and (25R)-26-[(O-β-D-glucopyranosyl-(1→2)-β-D-glucopyranosyl)]-20α-hydroxyfurost-5,22-diene-3-O-[α-L-rhamnopyranosyl-(1→2)]-β-D-glucopyranoside on the basis of spectroscopic means including HR-ESI-MS, 1D and 2D NMR experiments.
authors.affiliation: Xiyuan Hospital, China Academy of Chinese Medical Sciences, School of Pharmaceutical Sciences, Peking University, Beijing, China. changlingd2010@yahoo.com.cn
authors.forename: Chang-Ling
authors.initials: CL
authors.lastname: Duan
authors.forename: Xiao-Feng
authors.initials: XF
authors.lastname: Ma
authors.forename: Yong
authors.initials: Y
authors.lastname: Jiang
authors.forename: Jian-Xun
authors.initials: JX
authors.lastname: Liu
authors.forename: Peng-Fei
authors.initials: PF
authors.lastname: Tu
mesh_terms: D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification*; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D031441:Ophiopogon / Q000737:chemistry*; D010840:Phytosterols / Q000737:chemistry / Q000302:isolation & purification*; D018517:Plant Roots / Q000737:chemistry; D012503:Saponins; D013237:Stereoisomerism
chemical_list: D004365:Drugs, Chinese Herbal; D006027:Glycosides; D010840:Phytosterols; D012503:Saponins; C552588:ophiopogonin H; C552589:ophiopogonin I