title: New triterpenoid saponins from Maesa tenera.
abstract: 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.
authors: Department of Pharmacognosy, School of Pharmaceutical Sciences, Toho University, Funabashi, Chiba, Japan.
authors: K
authors: K
authors: Koike
authors: Z
authors: Z
authors: Jia
authors: T
authors: T
authors: Nikaido
mesh_terms: 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*
chemical_list: D012503:Saponins; D014315:Triterpenes; C440048:maetenoside A; C440049:maetenoside B