SOLANACEAE SOLASODINE GLYCOSIDES AND DIOSGENIN FROM SOLANUM PINNATUM

Abstract

A sample of a plant growing near Longotoma, Aconcagua, identified as Solanum pinnatum Cavo (Voucher specimen No. BClO deposited in the herbarium of the Museo Nacional de Historia Natural, Santiago), wás examined for glycoalkaloids and sapogenins. The crude basic glycoside mixture isolated from stems and lea ves afforded solasonine, solamargine, and a glucose- and rhamnose-containing glycoside of solasodine, probably identical with a previously described product obtained by partiaI hydrolysis of soIamargine.1 Hydrolysis of the remaining glycosides furnished two neutral compounds: diosgenin and (25R)-spirosta-3,5-diene.2