A versatile synthetic route to indolizidines, (+)-7-deoxy-6-epicastanospermine, (−)-7,8-dideoxy-6-epicastanospermine and (−)-N-acetylslaframine

Abstract (+)-7-Deoxy-6-epicastanospermine 1 , (−)-7,8-dideoxy-6-epicastanospermine 2 and (−)- N -acetylslaframine 4 have been synthesized via the stereoselective intramolecular iodocyclization of trichloroacetimidates generated from cis -olefinic allylic alcohols 7 and 15 , respectively.