3,4,6-tri-O-benzyl-2-nitro-D-galactal

(2R,3R,4R,4aR,7S,8S,8aS)-3,4-Bis-benzyloxy-2-benzyloxymethyl-7,8-dihydroxy-octahydro-pyrano[3,2-b]pyridine-5-carboxylic acid tert-butyl ester

(2R,3R,4R,4aS,8aR)-3,4-Bis-benzyloxy-2-benzyloxymethyl-2,3,4,4a,6,8a-hexahydro-pyrano[3,2-b]pyridine-5-carboxylic acid tert-butyl ester

Allyl-((2R,3S,4R,5R,6R)-4,5-bis-benzyloxy-6-benzyloxymethyl-2-vinyl-tetrahydro-pyran-3-yl)-carbamic acid tert-butyl ester

((2R,3S,4R,5R,6R)-4,5-Bis-benzyloxy-6-benzyloxymethyl-2-vinyl-tetrahydro-pyran-3-yl)-carbamic acid tert-butyl ester