New quinolizidine and diaza-adamantane alkaloids from Acosmium dasycarpum (Vog.) Yakovlev-Fabaceae

The phytochemical investigation of the methanol crude extract obtained from Acosmium dasycarpum (Vog.) Yakovlev root bark led to the isolation of the quinolizidine alkaloids lupanine, acosmine, acosminine, and lupanacosmine, as well as the diaza-adamantane alkaloids panacosmine, and dasycarpumine. Lupanacosmine (4) and dasycarpumine (6) have been described for the first time herein.