Preliminary studies of foliar and floral flavonoids from Jaborosa rotacea (Lillo) Hunz. et Barboza (Solanaceae)

Abstract

Jaborosa rotacea var. rotacea and Jaborosa rotacea var. tucumanensis, belong to the Jaborosae Miers group and coexist in Tucumán Province (Argentina). The results of a preliminary analysis of the leaves and flowers flavonoids are reported.

Foliar chromatographic patterns of Jaborosa rotacea var. rotacea and Jaborosa rotacea var. tucumanensis are similar and yielded quercetin-3-glucoside, quercetin-3-rutinoside, quercetin-3,7-diglucoside. Floral chromatographic patterns show cualitative and quantitative differences with predominance of glycosilated flavonoids, methoxylated in C-4?, one of them, diosmetin, in Jaborosa rotacea var. tucumanensis.