The wide range of biological activity (eg antitumor, carcinogenic, microbial growth inhibitor, plant growth inhibitor, antifeedant and antiflammatory properties) displayed by many compounds possessing the thiophene or furan moiety has attracted the attention of synthetic organic In continuation of studies on the asymmetric hydroboration of heterocyclic ole fin^^.^ some novel 2-and 3-cycloalkenylfurans/thiophenes and their oxyderivatives have recently ...