Cyclodehydroisolubimin: a new tricyclic sesquiterpene from potato tubers inoculated with Phytophthora infestans
Abstract
Cyclodehydroisolubimin (1), a new tricyclic sesquiterpene has been isolated from potato tubers inoculated with Phytophthora infestans; its structure was derived largely from proton and carbon n.m.r. spectra and its structure and relative stereochemistry confirmed by direct comparison with the ketone derived from a known synthetic intermediate (2).