Studies on the Steroidal Components of Domestic Plants. XLII. Narthogenin, Isonarthogenin and Neonogiragenin, Three New Sapogenins of Metanarthecium luteo-viride MAXIM.

Abstract

In order to find a proto-sapogenin of luvigenin (III), the structural investigation of the unknown sapogenins from Metanarthecium luteo-viride MAXIM was attempted. Isonarthogenin (Va), narthogenin (VIa) and neonogiragenin (XIIIa) were isolated, and the former two sapogenins were established to be steroidal sapogenins having a hydroxyl group at C-27.