title: New steroidal saponin from Hosta sieboldiana.
abstract: An extract of the edible parts of Hosta sieboldiana suppressed the growth of P388 mouse leukemic cells. A new steroidal saponin was isolated from Hosta sieboldiana in this study, and the structure was determined by a spectroscopic analysis to be (25R)-3beta-(alpha-L-rhamnopyranosyl-(1-->4)-beta-D-glucopyranosyl-(1-->3)-[beta-D-glucopyranosyl-(1-->2)]-beta-D-glucopyranosyl-(1-->4)-beta-D-galactopyranosyl)-5alpha-spirostan-2alpha-ol.
authors.affiliation: National Food Research Institute, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, Japan. yada33@affrc.go.jp
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Yada
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Kimura
authors.forename: Masahiro
authors.initials: M
authors.lastname: Suzuki
authors.forename: Mayumi
authors.initials: M
authors.lastname: Ohnishi-Kameyama
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Shinmoto
mesh_terms: D031422:Hosta; D012503:Saponins / Q000737:chemistry*; D013150:Spirostans / Q000032:analysis*
chemical_list: D012503:Saponins; D013150:Spirostans