Stereoselective synthesis of (S)-13-hydroxy octadeca-(9Z, 11E)-di- and (9Z, 11E, 15Z)-trienoic acids: Selfdefensive substances against rice blast disease

Article abstract of DOI:10.1016/S0040-4020(01)80454-3

A highly stereoselective synthesis of [(S)-coriolic acid] (1) and first total synthesis of (S)-15,16-didehydrocoriolic acid (2) by a Pd°-CuI catalysed coupling of (S )-halovinylalcohol with acetylenic moiety is described. The required optically pure chlor