(4R,5R)-4-(tert-Butyl-diphenyl-silanyloxymethyl)-5-(3-methanesulfonyloxy-propyl)-2,2-dimethyl-oxazolidine-3-carboxylic acid tert-butyl ester

4-hydroxy-3-[4-(phenylmethoxy)benzoylamino]-1-(phenylmethoxycarbonyl)-hexahydroazepine

4-[2-(benzyloxycarbonyl)benzoyl]-3,5-dibenzyloxybenzoic acid