SYNTHESIS OF CAMPESTERYL ACETATE ((2~R)-2~-METH-YL-3~-ACETOXVCHOLESTEN -5-JRE) ... R. Ikan, A. Narkus and ED Bergmann ... Department of Organic Chemistry, Hebrew University, Jerusalem, Israel. ... A synthesis ef campesteryl acetate and its 2~S epimer has been accomp- lished star~i~g from the optically active 3,~-dimethylpentylmagnesium bromides and pregnenolone acetate. The two epimers have different util~zation by the larvae of ...