(7S,8R,8aR)-7,8-Bis-benzyloxy-tetrahydro-oxazolo[3,4-a]pyridine-3,6-dione

(6R,7R,8R,8aR)-7,8-Bis-benzyloxy-6-(4-methoxy-benzylamino)-hexahydro-oxazolo[3,4-a]pyridin-3-one

N-((6R,7R,8R,8aR)-7,8-Bis-benzyloxy-3-oxo-hexahydro-oxazolo[3,4-a]pyridin-6-yl)-N-(4-methoxy-benzyl)-acetamide

(8R,8aS)-8-hydroxy-8,8a-dihydro-1H-oxazolo[3,4-a]pyridin-3(5H)-one

(8S,8aR)-8-benzyloxy-1,5,8,8a-tetrahydrooxazolo[3,4-a]pyridin-3-one