title: Diethyl 4-(4-ethoxy-phen-yl)-2,6-dimethyl-1,4-dihydro-pyridine-3,5-dicarboxyl-ate.
abstract: In the title compound, C(21)H(27)NO(5), the dihydropyridine ring adopts a boat conformation. The ethoxy-phenyl ring is oriented approximately perpendicular to the planar part of the dihydropyridine ring, making a dihedral angle of 89.45 (6)°. An intra-molecular C-H⋯O hydrogen bond generates an S(6) ring motif. In the crystal structure, neighbouring mol-ecules are linked into chains along the a axis by N-H⋯O hydrogen bonds and the chains are inter-connected into two-dimensional networks parallel to the ab plane by C-H⋯O hydrogen bonds. The structure is further stabilized by weak C-H⋯π inter-actions.
authors.forename: Hoong-Kun
authors.initials: HK
authors.lastname: Fun
authors.forename: Jia Hao
authors.initials: JH
authors.lastname: Goh
authors.forename: B Palakshi
authors.initials: BP
authors.lastname: Reddy
authors.forename: S
authors.initials: S
authors.lastname: Sarveswari
authors.forename: V
authors.initials: V
authors.lastname: Vijayakumar