2,6-dideoxy-D-ribo-hexono-1,4-lactone

(1R,4R,5R,6R)-5-Hydroxy-4-methyl-3,7-dioxa-bicyclo[4.1.0]heptan-2-one

(4S,5R)-4-hydroxy-2-hexen-5-olide

4(S),5(S)-dihydroxy-6(R)-methyl-tetrahydro-pyran-2-one

D-(-)-trans-erythro-1,1-dimethoxy-3,4-epoxyhexan-5-ol