An enantioselective total synthesis of epothilones A (1) and B (2) using multifunctional asymmetric catalysis such as a cyanosilylation of an aldehyde, an aldol reaction of an unmodified ketone with an aldehyde, and a protonation in the conjugate addition of a thiol to an α, β-unsaturated thioester has been achieved. We divided 1 and 2 into fragment A, fragment B, and fragment C. A catalytic asymmetric synthesis of fragments A and B was ...