(4R,5S)-4-((R)-1-Benzyloxy-3-oxo-propyl)-2,2-dimethyl-5-(2,2,2-trichloro-acetylamino)-[1,3]dioxane-5-carboxylic acid methyl ester

2,2-Dimethyl-propionic acid (R)-3-benzyloxy-4-hydroxy-butyl ester

(4R,5S)-4-[(R)-1-Benzyloxy-3-(2,2-dimethyl-propionyloxy)-propyl]-2,2-dimethyl-5-(2,2,2-trichloro-acetylamino)-[1,3]dioxane-5-carboxylic acid methyl ester

2,2-Dimethyl-propionic acid (3R,4R,5S)-3-benzyloxy-4-hydroxy-5-hydroxymethyl-5-(2,2,2-trichloro-acetylamino)-hept-6-enyl ester

2,2-Dimethyl-propionic acid (R)-3-benzyloxy-3-((4S,5R)-4-hydroxymethyl-2-trichloromethyl-4-vinyl-4,5-dihydro-oxazol-5-yl)-propyl ester

2,2-Dimethyl-propionic acid (R)-3-benzyloxy-4-oxo-butyl ester

2,2-Dimethyl-propionic acid (3R,4R)-3-benzyloxy-4-hydroxy-5-methylene-hept-6-enyl ester