5-(4-Methoxy-3-methyl-phenyl)-1,4-dihydro-2H-isoquinoline-3,3-dicarboxylic acid diethyl ester

2-Formylamino-2-(4'-methoxy-3'-methyl-biphenyl-2-ylmethyl)-malonic acid diethyl ester

5-(4-Methoxy-3-methyl-phenyl)-4H-isoquinoline-3,3-dicarboxylic acid diethyl ester

2-Diphenylacetyl-5-(4-methoxy-3-methyl-phenyl)-1,2,3,4-tetrahydro-isoquinoline-3-carboxylic acid methyl ester