Convolvulaceae provide a rich source of tropane alkaloids, however, 2-substituted tropanes have been described for only few species of this taxon. In this note, 2,7-diesters such as ipvelutine [7β-acetoxy-2α-(tigloyloxy)tropane] isolated from the vegetative parts of the Australian Ipomoea velutina R. BR. are described as a new group of tropane diesters.
Keywords: 2,7-Disubstituted Tropanes; 7β-Acetoxy-2α-tigloyloxytropane; Convolvulaceae; Ipomoea velutina; Ipvelutine; Structure Elucidation.