N-(phenylaminocarbonyl)-O-(3,4,6-tri-O-benzyl-2-deoxy-2-nitro-α-D-galactopyranosyl)-L-threonine methyl ester

N-(phenylaminothiocarbonyl)-O-(3,4,6-tri-O-benzyl-2-deoxy-2-nitro-α-D-galactopyranosyl)-L-threonine methyl ester

O-(2-amino-3,4,6-tri-O-benzyl-2-deoxy-α-D-galactopyranosyl)-N-(tert-butoxycarbonyl)-L-serine

(3S,5aR,6R,7R,8R,9aS)-3-[N-(tert-butoxycarbonyl)amino]-6,7-bis(benzyloxy)-8-[(benzyloxy)methyl]octahydropyrano[2,3-b][1,5]oxazepin-4-one

(3S,5aR,6R,7R,8R,9aS)-3-[N-(tert-butoxycarbonyl)amino]-6,7-dihydroxy-8-(hydroxymethyl)octahydropyrano[2,3-b][1,5]oxazepin-4-one