Abstract
Modifications at the largely unexplored C14 position of the baccatin III core of the taxanes were carried out. Oxidation at C14 of 7-TES-13-ketobaccatin III with benzeneseleninic anhydride resulted in novel A, B ring rearranged products. A probable mechanism for product formation and reductive transformations of the rearranged products are described.
Keywords: Taxanes, benzeneseleninic anhydride, oxidation, rearrangement