Methanesulfonic acid (1R,2S,3R)-1-(benzyloxycarbonylamino-methyl)-2-(4-methoxy-benzyloxy)-3-methoxymethoxy-pent-4-enyl ester

(S)-2-[(1R,2R)-2-Acetoxy-1-(4-methoxy-benzyloxy)-but-3-enyl]-aziridine-1-carboxylic acid benzyl ester

(S)-2-[(1R,2S)-2-Acetoxy-1-(4-methoxy-benzyloxy)-3-oxo-propyl]-aziridine-1-carboxylic acid benzyl ester

(S)-2-[(Z)-(1R,2R)-2-Acetoxy-4-acetylamino-1-(4-methoxy-benzyloxy)-4-methoxycarbonyl-but-3-enyl]-aziridine-1-carboxylic acid benzyl ester