methyl (4S,6R)-β-hydroxy-α,6-dimethyl-2-oxo-1,3-dioxane-4-pentanoate

methyl (4S,6R)-α,6-dimethyl-β,2-dioxo-1,3-dioxane-4-pentanoate

methyl (6R,8S)-(E)-2,3-dehydrononactate (S)-(-)-2-methoxy-2-phenyl-3,3,3-trifluoropropanoate ester

methyl (6R,8R)-(E)-2,3-dehydrononactate