Two new oleanolic acid saponins named asteryunnanoside F and G were isolated from the roots. of Aster yunnenensis. The chemical structures were determined as oleanolic acid-28-O-βD-glucopyranosyl-(1→6)-β-D-glucO an...Two new oleanolic acid saponins named asteryunnanoside F and G were isolated from the roots. of Aster yunnenensis. The chemical structures were determined as oleanolic acid-28-O-βD-glucopyranosyl-(1→6)-β-D-glucO and 3-O-β-Dglucopyranosyl-oleanolic acid-28-O-βD-glucopyranosyl-(1→6)[-rhamn by speCtral data,especially 2D NMR anajysis (COSY, HETCOR, HOHAHA and ROESY), and Chemical transformations.展开更多
A new echinocystic acid saponin, asteryunnanoside H (1), has been isolated from the roots of Astsr yunnanensis (Compositae). The structure and the unambiguous assignments of the 1H- and 13C NMR data of 1 were obtained...A new echinocystic acid saponin, asteryunnanoside H (1), has been isolated from the roots of Astsr yunnanensis (Compositae). The structure and the unambiguous assignments of the 1H- and 13C NMR data of 1 were obtained based on extensive use of 1D and 2D NMR techniques (COSY. TOCSY, ROESY, HMQC and HMBC), and chemical transformations.展开更多
A new oleanane-type triterpene saponin. asteryunnanoside E. has been isolated from the roots of Astir yunnanensis Franch. and its structure elucidated as 3-O-β-D-glucopyranosyl-bayogenin-28-O-β-glucopyranoside by me...A new oleanane-type triterpene saponin. asteryunnanoside E. has been isolated from the roots of Astir yunnanensis Franch. and its structure elucidated as 3-O-β-D-glucopyranosyl-bayogenin-28-O-β-glucopyranoside by means of spectral data particularly 2D NMR including COSY. HETCOR, HOHAHA and ROESY techniques and chemical transformation.展开更多
文摘Two new oleanolic acid saponins named asteryunnanoside F and G were isolated from the roots. of Aster yunnenensis. The chemical structures were determined as oleanolic acid-28-O-βD-glucopyranosyl-(1→6)-β-D-glucO and 3-O-β-Dglucopyranosyl-oleanolic acid-28-O-βD-glucopyranosyl-(1→6)[-rhamn by speCtral data,especially 2D NMR anajysis (COSY, HETCOR, HOHAHA and ROESY), and Chemical transformations.
文摘A new echinocystic acid saponin, asteryunnanoside H (1), has been isolated from the roots of Astsr yunnanensis (Compositae). The structure and the unambiguous assignments of the 1H- and 13C NMR data of 1 were obtained based on extensive use of 1D and 2D NMR techniques (COSY. TOCSY, ROESY, HMQC and HMBC), and chemical transformations.
文摘A new oleanane-type triterpene saponin. asteryunnanoside E. has been isolated from the roots of Astir yunnanensis Franch. and its structure elucidated as 3-O-β-D-glucopyranosyl-bayogenin-28-O-β-glucopyranoside by means of spectral data particularly 2D NMR including COSY. HETCOR, HOHAHA and ROESY techniques and chemical transformation.
