title: Conversion of esculeoside A into esculeogenin B.
abstract: Conversion of the spirosolane-type glycoside, esculeoside A, a major component contained in the ripe tomato Lycopersicon esculentum fruits, into a solanocapsine-type sapogenol, esculeogenin B-2, (5alpha,22S,23R,25S)-22,26-epimino-16beta,23-epoxy-3beta,23,27-trihydroxycholestane, and esculeogenin B-1, (5alpha,22R,23S,25S)-22,26-epimino-16beta,23-epoxy-3beta,23,27-trihydroxycholestane, which are rare naturally occurring compounds was attained by acid hydrolysis with 2 N HCl in dioxane and water (1 : 1).
authors.affiliation: Faculty of Medical and Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan.
authors.forename: Mona El
authors.initials: ME
authors.lastname: Aasr
authors.forename: Yukino
authors.initials: Y
authors.lastname: Oshiro
authors.forename: Yukio
authors.initials: Y
authors.lastname: Fujiwara
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Miyashita
authors.forename: Tsuyoshi
authors.initials: T
authors.lastname: Ikeda
authors.forename: Masateru
authors.initials: M
authors.lastname: Ono
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Yoshimitsu
authors.forename: Toshihiro
authors.initials: T
authors.lastname: Nohara
mesh_terms: D018551:Solanum lycopersicum / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D012502:Sapogenins / Q000737:chemistry*
chemical_list: D012502:Sapogenins; C505180:esculeogenin B; C530544:esculeoside A