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

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

[(E)-(1S,2R,3R)-3-(tert-Butyl-dimethyl-silanyloxy)-2-hydroxy-1-hydroxymethyl-hex-4-enyl]-carbamic acid benzyl ester

(S)-4-[(E)-(1R,2R)-2-(tert-Butyl-dimethyl-silanyloxy)-1-hydroxy-pent-3-enyl]-2,2-dimethyl-oxazolidine-3-carboxylic acid benzyl ester

Methanesulfonic acid (E)-(2S,3R,4R)-2-benzyloxycarbonylamino-4-(tert-butyl-dimethyl-silanyloxy)-3-hydroxy-hept-5-enyl ester