title: Tupichinins B-D, three new spirostanol saponins from Tupistra chinensis rhizomes.
abstract: Three new spirostanol saponins were isolated from the EtOAc fraction of methanol extract from Tupistra chinensis rhizomes. Based on the detailed analysis of their 1D and 2D NMR spectra and chemical evidence, their structures were determined as 1β-O-acetyl-spirost-5,25(27)-dien-3α-yl-O-β-D-glucopyranoside (1), (25S)-1β,2β,5β-trihydroxy-spirostane-3β-yl-O-β-D-glucopyranoside (2) and (25S)-1β,2β-dihydroxy-5β-spirostane-3β-yl-O-β-D-xylopyranoside (3), respectively.
authors.affiliation: a Department of Applied Chemistry and Materials Science , Fooyin University , Kaohsiung 831 , Taiwan, Republic of China.
authors.forename: Li-Mei
authors.initials: LM
authors.lastname: Wei
authors.forename: Yang-Chang
authors.initials: YC
authors.lastname: Wu
authors.forename: Chin-Chau
authors.initials: CC
authors.lastname: Chen
authors.forename: Pei-Wen
authors.initials: PW
authors.lastname: Hsieh
authors.forename: Wen-Bin
authors.initials: WB
authors.lastname: Pan
mesh_terms: D019668:Liliaceae / Q000737:chemistry*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D027343:Rhizome / Q000737:chemistry; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D013150:Spirostans / Q000737:chemistry / Q000302:isolation & purification*; D013624:Taiwan
chemical_list: D012503:Saponins; D013150:Spirostans; C000590617:tupichinin B; C000590618:tupichinin C; C000590619:tupichinin D