The present study investigated the chemical constituents of the roots and rhizomes of Panax notoginseng.Compounds were isolated by various column chromatographic methods,and their structures were elucidated by the ext...The present study investigated the chemical constituents of the roots and rhizomes of Panax notoginseng.Compounds were isolated by various column chromatographic methods,and their structures were elucidated by the extensive analysis of spectroscopic data and chemical evidences.A novel 12,23-epoxy dammarane-type saponin,named epoxynotoginsenoside A(1),together with four known compounds(2-5),was isolated and characterized.展开更多
Two new dammarane glycosides named notoginsenoside T-1 and T-2 were isolated from the mild acid hydrolysis products of the root saponins of Panax notoginseng. On the basis of spectroscopic evidences, their structures ...Two new dammarane glycosides named notoginsenoside T-1 and T-2 were isolated from the mild acid hydrolysis products of the root saponins of Panax notoginseng. On the basis of spectroscopic evidences, their structures were elucidated to be 6-O-beta -D-glucopyranosyl-24(25)-epoxy-3 beta ,6 alpha ,12 beta ,23 xi -tetrahydroxydammar-20(22)(E)-ene 1 and 6-O-beta -D-glucopyranosyl-24(25)-epoxy-23 xi -methoxyl-3 beta ,6 alpha ,12 beta -trihydroxydamm-ar-20(22)(E)-ene 2, respectively.展开更多
A new dammarane saponin, Gycomoside I was isolated from Gynostemma compressum and elucidated as 1β, 3β, 12β,20(S), 26-pentahydroxy-dammar-24(25)-en-20(S)-O-β-D-glucopyranosyl6-β-D-glucopyranoside based on the che...A new dammarane saponin, Gycomoside I was isolated from Gynostemma compressum and elucidated as 1β, 3β, 12β,20(S), 26-pentahydroxy-dammar-24(25)-en-20(S)-O-β-D-glucopyranosyl6-β-D-glucopyranoside based on the chemical and spectral evidences.展开更多
基金supported by the grants from the Research Committee of the University of Macao(MYRG123-ICMS12)Macao Science and Technology Development Fund(SKL/QRCM/EST/11-Y3/ICMS)National Natural Science Foundation of China(S2013HT 0003L)
文摘The present study investigated the chemical constituents of the roots and rhizomes of Panax notoginseng.Compounds were isolated by various column chromatographic methods,and their structures were elucidated by the extensive analysis of spectroscopic data and chemical evidences.A novel 12,23-epoxy dammarane-type saponin,named epoxynotoginsenoside A(1),together with four known compounds(2-5),was isolated and characterized.
基金the members of analytic group of Laboratory of Phytochemistry, Kunming Institute of Botany, Chinese Academy of Sciences.
文摘Two new dammarane glycosides named notoginsenoside T-1 and T-2 were isolated from the mild acid hydrolysis products of the root saponins of Panax notoginseng. On the basis of spectroscopic evidences, their structures were elucidated to be 6-O-beta -D-glucopyranosyl-24(25)-epoxy-3 beta ,6 alpha ,12 beta ,23 xi -tetrahydroxydammar-20(22)(E)-ene 1 and 6-O-beta -D-glucopyranosyl-24(25)-epoxy-23 xi -methoxyl-3 beta ,6 alpha ,12 beta -trihydroxydamm-ar-20(22)(E)-ene 2, respectively.
文摘A new dammarane saponin, Gycomoside I was isolated from Gynostemma compressum and elucidated as 1β, 3β, 12β,20(S), 26-pentahydroxy-dammar-24(25)-en-20(S)-O-β-D-glucopyranosyl6-β-D-glucopyranoside based on the chemical and spectral evidences.
