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New dammarane type triterpene with cyclization at the side chain from oxidative alkaline-degradation products of PQS / 药学学报
Yao Xue Xue Bao ; (12): 277-280, 2008.
Article de Zh | WPRIM | ID: wpr-277863
Bibliothèque responsable: WPRO
ABSTRACT
To study the oxidative alkaline-degradation products of PQS (Panax quinquefolium saponin), two compounds were isolated from the crude product of oxidative alkaline-degradation by silica gel column chromatography, Sephadex LH-20 column chromatography and recrystallized methods. On the basis of spectroscopic analysis, their structures were established as (12R, 20S, 24R)-20, 24; 12, 24-diepoxy-24-deisopropyl-dammarane-3beta-ol (1) and (20S, 24R)-20, 24-epoxydammarane-3beta3, 12beta, 25-triol (2). Compounds 1 and 2, dammarane type triterpene with cyclization at the side chain, were obtained for the first time from alkaline-degradation products of total ginsenosides of Panax quinquefolium L., compound 1 is a new compound.
Sujet(s)
Texte intégral: 1 Indice: WPRIM Sujet Principal: Oxydoréduction / Sapogénines / Saponines / Stéroïdes / Triterpènes / Chimie / Cyclisation / Panax langue: Zh Texte intégral: Yao Xue Xue Bao Année: 2008 Type: Article
Texte intégral: 1 Indice: WPRIM Sujet Principal: Oxydoréduction / Sapogénines / Saponines / Stéroïdes / Triterpènes / Chimie / Cyclisation / Panax langue: Zh Texte intégral: Yao Xue Xue Bao Année: 2008 Type: Article