A Facile Synthesis of Optically Pure (?)-(S)-Ipsenol Using a Chiral Titanium Complex
作者:Konrad Oertle、Harry Beyeler、Rudolf O. Duthaler、Willi Lottenbach、Martin Riediker、Eginhard Steiner
DOI:10.1002/hlca.19900730215
日期:1990.3.14
A stereocontrolled synthetic route to opticallypure (−)-(S)-ipsenol (1), the pheromone of Pityokteines curvidens and various other bark-beetle species is described. Key step of the synthesis is an enantioselective aldol reaction using a chiral titanium–carbohydrate complex (Scheme 1). The carboxylate function of the opticallypure β-hydroxy acid 5 thus obtained in mol quantities is then elaborated