Ethyl 2,7,7-Trimethyl-4-(1-Methyl-1H-Indol-3-Yl)-5-Oxo-1,4,5,6,7,8-Hexa­Hydro­Quinoline-3-Carboxyl­Ate

Abstract

In the title mol­ecule, C24H28N2O3, the cyclo­hexene ring is in a sofa conformation and the 1,4-dihydro­pyridine ring is in a slight boat conformation. In the indole ring system, the pyrrole and benzene rings form a dihedral angle of 2.63 (7)°. In the crystal, N—H⋯O hydrogen bonds connect the mol­ecules into C(6) chains parallel to the b axis and pairs of weak C—H⋯O hydrogen bonds link inversion-related chains into a ladder motif through R 2 2(18) rings. A weak intra­molecular C—H⋯O hydrogen bond is also observed.