Crystal structure of 15-(naphthalen-1-yl)-7,7a,8,9,10,11-hexa­hydro-6a,12a-(methano­epoxy­methano)­indolizino[2,3-c]quinoline-6,13(5H)-dione

In the title compound, C(27)H(24)N(2)O(3), the dihedral angle between the mean planes of the di­hydro­furan and 3,4-di­hydro­quinoline ring systems is 70.65 (9)°. The di­hydro­furan ring adopts an envelope conformation with the C atom adjacent to the methyl­ene C atom of the pyrrolidine ring as the flap. The five-membered pyrrolidine ring adopts a twist conformation on the N—C(tetra­substituted) bond. In the crystal, mol­ecules are linked via pairs of N—H⋯O hydrogen bonds, forming inversion dimers with an R (2) (2)(8) ring motif. The dimers are linked via pairs of C—H⋯O hydrogen bonds, forming ribbons enclosing R (2) (2)(12) ring motifs lying in a plane parallel to (01-1).