N-trichloroacetyl-6-amino-6-deoxy-L-sorbose

(1aR,6aR,7R,7aR)-7-(t-butyldimethylsilyloxy)tetrahydro-1aH-oxazolo[3,4-a]oxireno[2,3-d]pyridin-4(2H)-one

(8S,8aR)-8-(t-butyldimethylsilyloxy)-8,8a-dihydro-1H-oxazolo[3,4-a]pyridin-3(5H)-one

(2R,3R,4R,5S)-2-[(acetyloxy)methyl]-piperidine-3,4,5-triol triacetate

benzyl (2R,3R,4R)-2-((benzyloxy)methyl)-3,4-dihydroxy-3,4-dihydropyridine-1(2H)-carboxylate