(S)-2-Amino-7-[(4S,5S)-2,2-dimethyl-5-(toluene-4-sulfonyloxymethyl)-[1,3]dioxolan-4-yl]-heptanoic acid

(3S,4'S,5'S)-3-acetoxy-3-[5'-(tert-butyldimethylsilanyloxymethyl)-2',2'-dimethyl-[1,3]dioxolan-4'-yl]-2-(4''-methoxybenzenesulfonylamino)-propionic acid benzyl ester

(2R,3S,4'S,5'S)-3-acetoxy-3-[5'-hydroxymethyl-2',2'-dimethyl-[1,3]dioxolan-4'-yl]-2-(4''-methoxybenzenesulfonylamino)-propionic acid benzyl ester

[(3aS,6S,7S,7aR)-2,2-Dimethyl-7-(tetrahydro-pyran-2-yloxy)-hexahydro-[1,3]dioxolo[4,5-c]pyridin-6-yl]-methanol