available (R)- or (S)-epichlorohydrin has been developed. The key-step of these syntheses involves the selective substitution of the methylene chlorine atom by benzoate on a mixture of and or of their enantiomers, followed by crystallization of the corresponding cis-benzoates, (2S,4R)-18 or (2S,4S)-18, from which (+)- or (−)-1 were obtained as described for (±)-1. The ee's of (+)- and (−)-ketoconazole