methyl 2-(1-cycloheptanol)mandelate

dimethyl 2,3-dihydroxy-2,3-diphenylbutanedioate

β-methyl-β-hydroxy-γ-phenyl-γ-carbomethoxybutyrolactone

α,β-dimethyl-β,γ-dihydroxy-γ-phenylbutyrolactone