Two New Taxoids from European Yew (Taxus baccata) That Act as Pyrethroid Insecticide Synergists with the Black Vine Weevil (Otiorhynchus sulcatus)

Abstract

Bioassay-guided fractionation of an extract of foliage of European yew (Taxus baccata L.) yielded two new (1−2) and a previously reported (3) taxoid that acted as pyrethroid insecticide synergists with the black vine weevil (Otiorhynchus sulcatus Fab.). Structures of the compounds were established by spectral methods.