N-(2,6-dioxo-cyclohexylmethyl)-phthalamic acid
2-(1-nitro-cyclohexylmethyl)-cyclohexane-1,3-dione
benzyl-(2,6-dioxo-cyclohexylmethyl)-malonic acid dimethyl ester
2-cyano-3-(2,6-dioxo-cyclohexyl)-2-phenyl-propionic acid methyl ester
acetylamino-(2,6-dioxo-cyclohexylmethyl)-malonic acid dimethyl ester