title: A new triterpenoid saponin with inhibition of luteal cell from the seeds of Vaccaria segetalis.
abstract: A new triterpenoid saponin, named segetoside B, showing inhibition of luteal cell activity, has been isolated from the seeds of Vaccaria segetalis. On the basis of chemical reactions and spectral analyses, its structure has been established as 28-O-[beta-D-xylopyranosyl-(1 --> 4)-alpha-L-rhamnopyranosyl-(1 --> 2)]-[alpha-L-(5-O-acetyl)arabinofuranosyl-(1 --> 3)]-beta-D-(4-O-acetyl)fucopyranosyl-gypsogenin-3-O-beta-D-galactopyranosyl-(1 --> 2)-beta-D-(6-O-methyl ester)-glucuronopyranoside.
authors.affiliation: Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China.
authors.forename: Sheng-Min
authors.initials: SM
authors.lastname: Sang
authors.forename: Al-Na
authors.initials: AN
authors.lastname: Lao
authors.forename: Ying
authors.initials: Y
authors.lastname: Leng
authors.forename: Lin
authors.initials: L
authors.lastname: Cao
authors.forename: Zhong-Liang
authors.initials: ZL
authors.lastname: Chen
authors.forename: Jun
authors.initials: J
authors.lastname: Uzawa
authors.forename: Yoshida
authors.initials: Y
authors.lastname: Shigeo
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Fujimoto
mesh_terms: D000818:Animals; D005260:Female; D008184:Luteal Cells / Q000187:drug effects* / Q000502:physiology; D051381:Rats; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D014315:Triterpenes / Q000737:chemistry / Q000494:pharmacology; D031245:Vaccaria / Q000737:chemistry*
chemical_list: D012503:Saponins; D014315:Triterpenes; C473380:segetoside B