Abstract
The whole plant of Marsdenia tomentosa DECNE. was proved to contain a glycoside mixture which showed strong Keller-Kiliani reaction, suggesting the presence of 2-desoxy sugars. The suger part which was obtained by acid hydrolysis was found to be glucose and cymarose by the paper chromatography compared with the authentic specimens. The aglycones were presumed to be esters. Their alkaline hydrolysis afforded two kinds of crystals, tomentogenin, a new aglycone (m.p. 247-249°) and sarcostin (m.p. 150°/245-250°) and from acidic portions tiglic acid, isovaleric acid, and acetic acid were found.
