title: Cardiac glycosides from Erysimum cheiranthoides.
abstract: Three new cardiac glycosides named cheiranthoside VIII (1), cheiranthoside IX (2) and cheiranthoside X (3) were isolated from the seeds of Erysimum cheiranthoides. Based on spectroscopic data, the structures of 1-3 were characterized as strophanthidin 3-O-beta-D-glucopyranosyl-(1-->4)-beta-D-antiaropyranoside, cheiranthidin 3-O-beta-D-glucopyranosyl-(1-->4)-beta-D-boiviopyranoside and cheiranthidin 3-O-alpha-L-rhamnopyranosyl-(1-->4)-beta-D-digitoxopyranoside, respectively. The aglycone moiety possessing a carboxyl group at C-10 of 2 and 3 was regarded to be determined for the first time.
authors.affiliation: Faculty of Pharmaceutical Sciences, Kumamoto University, Japan. none@gpo.kumamoto-u.ac.jp
authors.forename: Zhen-Huan
authors.initials: ZH
authors.lastname: Lei
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Nakayama
authors.forename: Akihiko
authors.initials: A
authors.lastname: Kuniyasu
authors.forename: Bao-Shan
authors.initials: BS
authors.lastname: Tai
authors.forename: Toshihiro
authors.initials: T
authors.lastname: Nohara
mesh_terms: D019607:Brassicaceae / Q000737:chemistry*; D002301:Cardiac Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D012639:Seeds / Q000737:chemistry; D013256:Steroids / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D002301:Cardiac Glycosides; D006027:Glycosides; D013256:Steroids; C464733:cheiranthoside IX; C464732:cheiranthoside VIII; C464734:cheiranthoside X