Steroidal glycosides from the fruits, aerial parts and tubers of potato (Solanum tuberosum)

Abstract

α-Chaconine (1), a-solanine (2) and chlorogenic acid (3) were isolated from the fresh unripe fruits of potato (Solanum tuberosum). Similarly, a-chaconine (1), a-solanine (2), aculeatiside A (4) and B (5) were isolated from aerial parts and a-chaconine (1), a-solanine (2), and protodioscin (6) were isolated from the tubers. The structures of these compounds were elucidated on the basis of their physical and spectroscopic data and comparison with reported literature values.