(5R,6S,7S,8S)-6,7-bis(benzyloxy)-5-benzyloxymethyl-8-(t-butyldimethylsilyloxy)-5,6,7,8-tetrahydro-2-(2,3-dihydroxypropyl)imidazo[1,2-a]pyridine

methyl (5R,6S,7S,8R)-6,7-bis(benzyloxy)-5-benzyloxymethyl-8-(t-butyldimethylsilyloxy)-5,6,7,8-tetrahydroimidazo[1,2-a]pyridine-2-acetate

(5R,6S,7S,8S)-6,7-bis(benzyloxy)-5-benzyloxymethyl-8-(t-butyldimethylsilyloxy)-5,6,7,8-tetrahydro-2-(3-hydroxy-2-oxopropyl)imidazo[1,2-a]pyridine

(5R,6S,7S,8R)-6,7-bis(benzyloxy)-5-benzyloxymethyl-8-(t-butyldimethylsilyloxy)-5,6,7,8-tetrahydro-2-(3-hydroxy-2-oxopropyl)imidazo[1,2-a]pyridine

methyl (5R,6S,7S,8R)-6,7-bis(benzyloxy)-5-benzyloxymethyl-5,6,7,8-tetrahydro-8-hydroxyimidazo[1,2-a]pyridine-2-acetate