Ipangulines and minalobines, chemotaxonomic markers of the infrageneric Ipomoea taxon subgenus Quamoclit, section Mina

A comprehensive GC-MS analysis of 8 spp. revealed altogether 52 ipangulines (unique platynecine esters) and 21 minalobines (unique trachelanthamidine esters), respectively. Two minalobines have been isolated and structurally elucidated.