Diethyl 4-(biphenyl-4-yl)-2,6-dimethyl-1,4-di­hydro­pyridine-3,5-di­carboxyl­ate

The title compound, C(25)H(27)NO(4), has a flattened di­hydro­pyridine ring. The benzene and phenyl rings are synclinal to one another, forming a dihedral angle of 49.82 (8)°; the axis of the biphenyl rings makes an 81.05 (9)° angle to the plane of the di­hydro­pyridine ring. In the crystal, N—H⋯O hydrogen bonds link the mol­ecules into chain motifs running along the a-axis direction. The chains are cross-linked by C—H⋯O inter­actions, forming sheet motifs running slightly off the (110) plane, together with an intermolecular interaction between head-to tail biphenyl groups, thus making the whole crystal packing a three-dimensional network. Intra­molecular C—H⋯O hydrogen bonds are also observed.