A new spirostanol sulfonate, spirost-5,25（27）-dien-1β,3β-diol 1-sulfonate（1）, was isolated from the rhizomes of Helleborus thibetanus（Ranunculaceae）, and the structure was identified on the basis of a detailed...A new spirostanol sulfonate, spirost-5,25（27）-dien-1β,3β-diol 1-sulfonate（1）, was isolated from the rhizomes of Helleborus thibetanus（Ranunculaceae）, and the structure was identified on the basis of a detailed spectroscopic analyses, including 2D NMR spectrometry, IR and HRESI-MS.展开更多
Thibetanosides E-H(1-4),four new steroidal constituents including three rare sulfonates(2-4),were isolated from the roots and rhizomes of Helleborus thibetanus,together with nine known steroidal compounds(5-13).Their ...Thibetanosides E-H(1-4),four new steroidal constituents including three rare sulfonates(2-4),were isolated from the roots and rhizomes of Helleborus thibetanus,together with nine known steroidal compounds(5-13).Their structures were elucidated by detailed spectroscopic analysis,including 1D and 2D NMR techniques and chemical evidence.In this study,compounds 2-13 were evaluated for their cytotoxic activities against HCT116,A549 and HepG2 tumor cell lines in vitro.Among them,compound 8(thibetanoside C)showed cytotoxicities against A549 cells(IC50 39.6±1.9μmol·L^-1)and HepG2 cells(IC50 41.5±1.1μmol·L^-1),respectively.Compound 9(23S,24S)-24-[(O-β-D-fucopyranosyl)oxy]-3β,23-dihydroxy-spirosta-5,25(27)-diene-1β-yl O-(4-O-acetyl-α-L-rhamnopyranosyl)-(1→2)-O-[β-D-xylopyranosyl-(1→3)]-α-L-arabinopyranoside)showed cytotoxicity against HCT116 cells(IC5033.6±2.1μmol·L^-1).展开更多
基金Supported by the Program for New Century Excellent Talents in University, China(No.NCET-09-0589) China Postdoc-toral Science Foundation(No. 20090450775)
文摘A new spirostanol sulfonate, spirost-5,25（27）-dien-1β,3β-diol 1-sulfonate（1）, was isolated from the rhizomes of Helleborus thibetanus（Ranunculaceae）, and the structure was identified on the basis of a detailed spectroscopic analyses, including 2D NMR spectrometry, IR and HRESI-MS.
基金supported by the Key R&D Program of Shaanxi Province(No.2019ZDLSF04-03-02)Subject Innovation Team of Shaanxi University of Chinese Medicine(No.2019-YL12)+2 种基金the National Natural Science Foundations of China(No.81503195)the Natural Science Foundation of Shaanxi Province(No.2016JQ8030)the Key R&D Program of Shaanxi Province(Nos.2017SF-360 and 2018SF-324)
文摘Thibetanosides E-H(1-4),four new steroidal constituents including three rare sulfonates(2-4),were isolated from the roots and rhizomes of Helleborus thibetanus,together with nine known steroidal compounds(5-13).Their structures were elucidated by detailed spectroscopic analysis,including 1D and 2D NMR techniques and chemical evidence.In this study,compounds 2-13 were evaluated for their cytotoxic activities against HCT116,A549 and HepG2 tumor cell lines in vitro.Among them,compound 8(thibetanoside C)showed cytotoxicities against A549 cells(IC50 39.6±1.9μmol·L^-1)and HepG2 cells(IC50 41.5±1.1μmol·L^-1),respectively.Compound 9(23S,24S)-24-[(O-β-D-fucopyranosyl)oxy]-3β,23-dihydroxy-spirosta-5,25(27)-diene-1β-yl O-(4-O-acetyl-α-L-rhamnopyranosyl)-(1→2)-O-[β-D-xylopyranosyl-(1→3)]-α-L-arabinopyranoside)showed cytotoxicity against HCT116 cells(IC5033.6±2.1μmol·L^-1).
