title: Rubupungenosides A and B, two novel triterpenoid saponin dimers from the aerial parts of Rubus pungens.
abstract: Two new triterpenoid saponin dimers, rubupungenosides A (1) and B (2), were isolated in their methylated forms 1a and 2a, respectively, from an ethanol extract of the aerial parts of Rubus pungens. The structures of 1a and 2a were established on the basis of spectroscopic and chemical methods.
authors.affiliation: Department of Chemistry, Institute of Organic Chemistry, National Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People's Republic of China.
authors.forename: B G
authors.initials: BG
authors.lastname: Wang
authors.forename: W M
authors.initials: WM
authors.lastname: Zhu
authors.forename: X M
authors.initials: XM
authors.lastname: Li
authors.forename: Z J
authors.initials: ZJ
authors.lastname: Jia
authors.forename: X J
authors.initials: XJ
authors.lastname: Hao
mesh_terms: D002681:China; D002851:Chromatography, High Pressure Liquid; D019281:Dimerization; D004365:Drugs, Chinese Herbal / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D019685:Rosales / Q000737:chemistry*; D012717:Sesquiterpenes / Q000737:chemistry / Q000302:isolation & purification*; D016339:Spectrometry, Mass, Fast Atom Bombardment
chemical_list: D004365:Drugs, Chinese Herbal; D012717:Sesquiterpenes; C412855:rubupungenoside A; C412856:rubupungenoside B