(3-methoxycarbonyl-3-methyl-2-oxo-6-phenyl-cyclohexyl)-acetic acid methyl ester
(7-methoxycarbonyl-7-methyl-2-oxo-4-phenyl-hexahydro-benzofuran-7a-yl)-acetic acid ethyl ester
methanol
potassium hydrogencarbonate
2-carboxymethyl-3-carboxymethylene-4-methyl-bicyclohexyl-4-carboxylic acid
3-ethoxycarbonylmethylene-2-carboxymethyl-4-methyl-bicyclohexyl-4-carboxylic acid
(3-ethoxycarbonylmethylene-4-methoxycarbonyl-4-methyl-bicyclohexyl-2-yl)-acetic acid
2-ethoxycarbonylmethylene-3-methoxycarbonylmethyl-1-methyl-4-phenyl-cyclohexanecarboxylic acid methyl ester