New triterpenoid saponins from Maesa tenera.
Two new triterpenoid saponins, maetenosides A and B were isolated from the aerial parts of Maesa tenera and were respectively defined as 3-O-[beta-D-glucopyranosyl-(1-->2)-alpha-L-rhamnopyranosyl-(1-->2)-beta-D-galactopyranosyl-(1-->3)][beta-D-glucopyranosyl-(1-->2)]-beta-D-glucuronopyranosyl camelliagenin A 22-O-angelate (1) and 3-O-[alpha-L-rhamnopyranosyl-(1-->2)-beta-D-galactopyranosyl-(1-->3)][beta-o-glucopyranosyl-(1-->2)]-beta-D-glucuronopyranosyl camelliagenin A 22-O-angelate (2). Their structures were established on the basis of chemical and spectroscopic methods.
Koike
K
K
Department of Pharmacognosy, School of Pharmaceutical Sciences, Toho University, Funabashi, Chiba, Japan.
Jia
Z
Z
Nikaido
T
T
D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D019684:Magnoliopsida / Q000737:chemistry*; D008969:Molecular Sequence Data; D012503:Saponins / Q000737:chemistry* / Q000302:isolation & purification*; D013057:Spectrum Analysis; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification*
D012503:Saponins; D014315:Triterpenes; C440048:maetenoside A; C440049:maetenoside B