3-((2R,3R,4R,5S)-3,4,5-Tris-benzyloxy-piperidin-2-yl)-propan-1-ol

(3S,4R,5R)-3,4-Bis-benzyloxy-5-(3-hydroxy-propyl)-pyrrolidin-2-one

(3S,4R,5R)-3,4-Bis-benzyloxy-5-[3-(tert-butyl-dimethyl-silanyloxy)-propyl]-pyrrolidin-2-one

(3S,4R,5R)-3,4-Bis-benzyloxy-5-(3-hydroxy-propyl)-1-(4-methoxy-benzyl)-pyrrolidin-2-one

(2R,3R,4S)-3,4-Bis-benzyloxy-2-[3-(tert-butyl-dimethyl-silanyloxy)-propyl]-5-oxo-pyrrolidine-1-carboxylic acid tert-butyl ester