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, named cynanversicoside F （1）, was isolated from the root of Cynanchum versicolor Bunge. Its structure was established as glaucogenin-A 3-O-β-D- digitoxopyranosyl-（1→4）-β-D-cymarop...A new C21 steroidal glycoside, named cynanversicoside F （1）, was isolated from the root of Cynanchum versicolor Bunge. Its structure was established as glaucogenin-A 3-O-β-D- digitoxopyranosyl-（1→4）-β-D-cymaropyranoside by spectroscopic and chemical methods.展开更多
Objective To investigate the chemical structures of glycosides in the roots of Cynanchum otophyllum（Asclepiadaceae） and to find new glycosides. Methods The total glycosides in the roots of C. olophyllum were separat...Objective To investigate the chemical structures of glycosides in the roots of Cynanchum otophyllum（Asclepiadaceae） and to find new glycosides. Methods The total glycosides in the roots of C. olophyllum were separated by silica gel column chromatography. The structures of the resulting compounds were determined by NMR and FAB-MS spectra. Results Three C21 steroidal glycosides were separated. Their structures were determined as caudatin 3-O-（4-O-methyl-β-D-cymaropyranosyl）-（1→4）-ɑ-D-oleandropyranosyl-（1→4）-β-D-glucopyranosyl-（1→4）-ɑ-L-rhamnopyranoside（1）, caudatin 3-O-β-D-digitoxopyranosyl-（1→4）-ɑ-D-oleandropyranosyl-（1→4）-β-Ddiginopyranosyl-（1→4）-β-D-glucopyranoside（2）, and caudatin 3-O-β-D-diginopyranosyl-（1→4）-ɑ-D-oleandropyranosyl-（1→4）-ɑ-D-oleandropyranosyl-（1→4）-β-Dglucopyranoside（3）, respectively. Conclusion Glycosides 1-3 are new compounds.展开更多
从萝藦科南山藤属植物南山藤的干燥茎中分离鉴定了6个化合物:β-D-黄夹吡喃糖基-(1→4)-β-D-磁麻吡喃糖基-(1→4)-β-D-阿洛吡喃糖苷(1),β-D-黄夹吡喃糖基-(1→4)-β-D-磁麻吡喃糖苷(2),marsectohexol(3),drevogenin D 3-O-β-D-磁麻...从萝藦科南山藤属植物南山藤的干燥茎中分离鉴定了6个化合物:β-D-黄夹吡喃糖基-(1→4)-β-D-磁麻吡喃糖基-(1→4)-β-D-阿洛吡喃糖苷(1),β-D-黄夹吡喃糖基-(1→4)-β-D-磁麻吡喃糖苷(2),marsectohexol(3),drevogenin D 3-O-β-D-磁麻吡喃糖苷(4),dregeosides Da1(5),dregeosides A11(6)。其中,化合物1为新低聚糖,化合物4为首次从属内分得C21甾体苷。展开更多
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.
文摘A new C21 steroidal glycoside, named cynanversicoside F （1）, was isolated from the root of Cynanchum versicolor Bunge. Its structure was established as glaucogenin-A 3-O-β-D- digitoxopyranosyl-（1→4）-β-D-cymaropyranoside by spectroscopic and chemical methods.
基金National Natural Science Foundation of China(30572322)Natural Science Foundation of Yunnan Province(2005C0036Q)
文摘Objective To investigate the chemical structures of glycosides in the roots of Cynanchum otophyllum（Asclepiadaceae） and to find new glycosides. Methods The total glycosides in the roots of C. olophyllum were separated by silica gel column chromatography. The structures of the resulting compounds were determined by NMR and FAB-MS spectra. Results Three C21 steroidal glycosides were separated. Their structures were determined as caudatin 3-O-（4-O-methyl-β-D-cymaropyranosyl）-（1→4）-ɑ-D-oleandropyranosyl-（1→4）-β-D-glucopyranosyl-（1→4）-ɑ-L-rhamnopyranoside（1）, caudatin 3-O-β-D-digitoxopyranosyl-（1→4）-ɑ-D-oleandropyranosyl-（1→4）-β-Ddiginopyranosyl-（1→4）-β-D-glucopyranoside（2）, and caudatin 3-O-β-D-diginopyranosyl-（1→4）-ɑ-D-oleandropyranosyl-（1→4）-ɑ-D-oleandropyranosyl-（1→4）-β-Dglucopyranoside（3）, respectively. Conclusion Glycosides 1-3 are new compounds.
文摘从萝藦科南山藤属植物南山藤的干燥茎中分离鉴定了6个化合物:β-D-黄夹吡喃糖基-(1→4)-β-D-磁麻吡喃糖基-(1→4)-β-D-阿洛吡喃糖苷(1),β-D-黄夹吡喃糖基-(1→4)-β-D-磁麻吡喃糖苷(2),marsectohexol(3),drevogenin D 3-O-β-D-磁麻吡喃糖苷(4),dregeosides Da1(5),dregeosides A11(6)。其中,化合物1为新低聚糖,化合物4为首次从属内分得C21甾体苷。
