4-hydroxy-3-(phenylmethoxy)-1-oxaspiro[4.5]dec-3-en-2-one

3-hydroxy-4-methoxy-1-oxaspiro[4.5]dec-3-en-2-one

S-methyl 1-hydroxycyclohexane-1-carbothioate

S-methyl 1-[(phenylmethoxy)acetoxy]-1-cyclohexanethiocarboxylate

4-hydroxy-3-methoxy-1-oxaspiro[4.5]dec-3-en-2-one