title: Fargosides A-E, triterpenoid saponins from Holboellia fargesii.
abstract: Five new triterpenoid saponins, fargosides A, B, C, D, and E, were isolated from the roots of Holboellia fargesii. The structures of fargosides A-E were elucidated on the basis of chemical and physicochemical evidence and found to be 3beta,20alpha-dihydroxy-29-norolean-12-en-28-oic acid 3-O-beta-D-xylopyranosyl-(1-->2)-beta-D-glucopyranoside (1), 3beta,20alpha,24-trihydroxy-29-norolean-12-en-28-oic acid 23-O-beta-D-fucopyranosyl-(1-->2)-[alpha-L-arabinopyranosyl-(1-->3)]-beta-D-glucopyranoside (2), 3beta,23-dihydroxy-30-norolean-2,20(29)-dien-28-oic acid 3-O-alpha-L-arabinopyranosyl-(1-->2)-[beta-D-glucopyranosyluronic acid-(1-->3)]-alpha-L-arabinopyranoside (3), 3beta,23-dihydroxy-30-norolean-12,20(29)-dien-28-oic acid 3-O-methyl beta-D-glucopyranosyluronate-(1-->3)-alpha-L-arabinopyranoside (4), and 3beta,23-dihydroxy-olean-12-en-28-oic acid 3-O-methyl beta-D-glucopyranosyluronate-(1-->3)-alpha-L-arabinopyranoside (5), respectively.
authors.affiliation: Department of Pharmacognosy, School of Pharmaceutical Sciences, Toho University, Funabashi, Chiba, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Fu
authors.forename: K
authors.initials: K
authors.lastname: Koike
authors.forename: Q
authors.initials: Q
authors.lastname: Zheng
authors.forename: K
authors.initials: K
authors.lastname: Mitsunaga
authors.forename: Z
authors.initials: Z
authors.lastname: Jia
authors.forename: T
authors.initials: T
authors.lastname: Nikaido
authors.forename: W
authors.initials: W
authors.lastname: Lin
authors.forename: D
authors.initials: D
authors.lastname: Guo
authors.forename: L
authors.initials: L
authors.lastname: Zhang
mesh_terms: D004365:Drugs, Chinese Herbal / Q000737:chemistry* / Q000302:isolation & purification; D008516:Medicine, Chinese Traditional; D019906:Nuclear Magnetic Resonance, Biomolecular; D010946:Plants, Medicinal / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry* / Q000302:isolation & purification; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D004365:Drugs, Chinese Herbal; D012503:Saponins; D014315:Triterpenes