An Efficient Stereoselective Total Synthesis of Aculeatins A and B

Aculeatins A and B, two naturally occurring bioactive spiroacetals, have been synthesized efficiently in stereoselective manner starting from 1-tetradecanal. The synthetic strategy involves Maruoka enantioselective allylation, diastereoselective iodine-induced electrophilic cyclization, alkylation of a chiral aldehyde and oxidative spirocyclization as the important steps.