title: Two new furostanol saponins from the fibrous root of Ophiopogon japonicus.
abstract: Two new furostanol saponins ophiopogonins J (1) and K (2) were isolated from the fibrous roots of Ophiopogon japonicus. The structures of 1 and 2 were established as (25R)-26-O-[(β-D-glucopyranosyl-(1 --> 2)-β-D-glucopyranosyl)]-14-hydroxy-furost-5,20(22)-diene 3-O-[α-L-rhamnopyranosyl-(1 --> 2)]-β-D-glucopyranoside (1), and (25R)-26-O-[(β-D-glucopyranosyl-(1 --> 2)-β-D-glucopyranosyl)]-furost-5,20(22)-diene 3-O-α-L-rhamnopyranosyl-(1 --> 2)[(β-D-xylopyranosyl-(1 --> 4)-β-D-glucopyranoside)] (2) on the basis of spectroscopic means including HRESIMS, 1D, and 2D NMR experiments.
authors: Zhi-Yun
authors: ZY
authors: Kang
authors: Meng-Jia
authors: MJ
authors: Zhang
authors: Jian-Xin
authors: JX
authors: Wang
authors: Jian-Xun
authors: JX
authors: Liu
authors: Chang-Ling
authors: CL
authors: Duan
authors: De-Quan
authors: DQ
authors: Yu
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 / Q000737:chemistry / Q000302:isolation & purification*; D013237:Stereoisomerism; D013261:Sterols / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D004365:Drugs, Chinese Herbal; D006027:Glycosides; D010840:Phytosterols; D012503:Saponins; D013261:Sterols; C552589:ophiopogonin I; C586950:ophiopogonin J; C586956:ophiopogonin K