An enantioselective synthesis of (+)-isobretonin A is described. The c
hiral glycerol moiety was enantioselectively prepared by reduction of
an optically active beta-keto sulfoxide. The all-trans trienic part of
the molecule was stereoselectively synthesized via reductive eliminat
ion of a 1,6-dibenzoate 2,4-diene with sodium amalgam.