(1R,2S)-Cbz epoxide

(1S,2R)-Cbz epoxide 　

N-[(1S)-1-(2R)-2-oxiranyl-2-phenylethyl]-

(2R,3S)-1,2-Epoxy-3-(Cbz-amino)-4-phenylbutane

(2r,3s)-1,2-epoxy-3-(benzyloxycarbonyl-amino)-4-phenylbutane