title: Structural elucidation of four new furostanol saponins from Tupistra chinensis by 1D and 2D NMR spectroscopy.
abstract: Four new furostanol saponins (1-4), two pairs of diastereoisomers, were isolated from methanolic extracts of Tupistra chinensis rhizomes and their structures were assigned from (1)H and (13)C NMR spectra, DEPT, and by 2D COSY, NOESY, HMQC, and HMBC experiments.
authors.affiliation: Hubei Key Laboratory of Natural Products Research and Development, College of Chemistry and Life Science, China Three Gorges University, Yichang 443002, PR China. kzou@ctgu.edu.cn
authors.forename: Kun
authors.initials: K
authors.lastname: Zou
authors.forename: Jun-zhi
authors.initials: JZ
authors.lastname: Wang
authors.forename: Zhi-yong
authors.initials: ZY
authors.lastname: Guo
authors.forename: Ming
authors.initials: M
authors.lastname: Du
authors.forename: Jun
authors.initials: J
authors.lastname: Wu
authors.forename: Yuan
authors.initials: Y
authors.lastname: Zhou
authors.forename: Fei-jun
authors.initials: FJ
authors.lastname: Dan
authors.forename: Chuang
authors.initials: C
authors.lastname: Liu
mesh_terms: D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D019684:Magnoliopsida / Q000737:chemistry; D000432:Methanol; D015394:Molecular Structure; D010936:Plant Extracts / Q000737:chemistry; D012503:Saponins / Q000737:chemistry*; D013237:Stereoisomerism; D013261:Sterols / Q000737:chemistry*
chemical_list: D010936:Plant Extracts; D012503:Saponins; D013261:Sterols; C521858:furostanol saponin I; D000432:Methanol