Three new C21 steroidal glycosides named komaroside A, komaroside B, komaroside C were isolated from the ethanolic extract of the roots of Cynanchum komarovii Al.Iljinski (Asclepiadaceae), their structures were determ...Three new C21 steroidal glycosides named komaroside A, komaroside B, komaroside C were isolated from the ethanolic extract of the roots of Cynanchum komarovii Al.Iljinski (Asclepiadaceae), their structures were determined by physiochemical and spectroscopic analysis.展开更多
Two new C21 steroidal glycosides, cynanauriculoside I and cynanauriculoside II, were isolated from the roots of Cynanchum aurichulatum. Their structures were established using spectroscopic methods including one and ...Two new C21 steroidal glycosides, cynanauriculoside I and cynanauriculoside II, were isolated from the roots of Cynanchum aurichulatum. Their structures were established using spectroscopic methods including one and two-dimensional NMR.展开更多
A new C21 steroidal glycoside, neocynapanogenin F 3-O-β-D-thevetoside 1, as well as its known aglycone neocynapanogenin F 2, which have an aberrant 13, 14：14, 15-disecopregnane-type skeleton were isolated from the r...A new C21 steroidal glycoside, neocynapanogenin F 3-O-β-D-thevetoside 1, as well as its known aglycone neocynapanogenin F 2, which have an aberrant 13, 14：14, 15-disecopregnane-type skeleton were isolated from the root of Cynanchum paniculatum. Their structures were elucidated on the basis of spectroscopic data analysis. These compounds showed certain cytotoxic activities in vitro.展开更多
Three new C21 steroidal glycosides named inamoside E （1）, inamoside F （2） and inamoside G （3） were isolated from the roots of Cynanchum inamoenum （Maxim.） Loes. Their structures were determined by spectroscopi...Three new C21 steroidal glycosides named inamoside E （1）, inamoside F （2） and inamoside G （3） were isolated from the roots of Cynanchum inamoenum （Maxim.） Loes. Their structures were determined by spectroscopic analysis, especially by ID and 2D NMR experiments.展开更多
A new C21-steroidal glycoside with two known compounds were isolated from the root of Cynanchum Stauntonii. Based on the spectral analysis, including MS, 1H NMR, 13C NMR, DEPT, 1H-1H COSY, 13C-1H COSY, HMQC and HMBC, ...A new C21-steroidal glycoside with two known compounds were isolated from the root of Cynanchum Stauntonii. Based on the spectral analysis, including MS, 1H NMR, 13C NMR, DEPT, 1H-1H COSY, 13C-1H COSY, HMQC and HMBC, their chemical structures were determinated as glaucogenin-C 3-O-α-L-cymaropyranosyl-（1→ 4）-β-o-digitoxopyranosyl-（1→4）-β-D-canaropyranoside （1）, stigmasterol （2） and ursolic acid （3）.展开更多
文摘Three new C21 steroidal glycosides named komaroside A, komaroside B, komaroside C were isolated from the ethanolic extract of the roots of Cynanchum komarovii Al.Iljinski (Asclepiadaceae), their structures were determined by physiochemical and spectroscopic analysis.
文摘Two new C21 steroidal glycosides, cynanauriculoside I and cynanauriculoside II, were isolated from the roots of Cynanchum aurichulatum. Their structures were established using spectroscopic methods including one and two-dimensional NMR.
基金This project was supported by Fund for Distinguished Chinese Young Scholars of the National Natural Science Foundation of China(No.30325046).
文摘A new C21 steroidal glycoside, neocynapanogenin F 3-O-β-D-thevetoside 1, as well as its known aglycone neocynapanogenin F 2, which have an aberrant 13, 14：14, 15-disecopregnane-type skeleton were isolated from the root of Cynanchum paniculatum. Their structures were elucidated on the basis of spectroscopic data analysis. These compounds showed certain cytotoxic activities in vitro.
文摘Three new C21 steroidal glycosides named inamoside E （1）, inamoside F （2） and inamoside G （3） were isolated from the roots of Cynanchum inamoenum （Maxim.） Loes. Their structures were determined by spectroscopic analysis, especially by ID and 2D NMR experiments.
文摘A new C21-steroidal glycoside with two known compounds were isolated from the root of Cynanchum Stauntonii. Based on the spectral analysis, including MS, 1H NMR, 13C NMR, DEPT, 1H-1H COSY, 13C-1H COSY, HMQC and HMBC, their chemical structures were determinated as glaucogenin-C 3-O-α-L-cymaropyranosyl-（1→ 4）-β-o-digitoxopyranosyl-（1→4）-β-D-canaropyranoside （1）, stigmasterol （2） and ursolic acid （3）.
