4′-Methyl-14′,19′-dioxa-4′-azaspiro[acenaphthylene-1,5′-tetracyclo[18.4.0.02,6.08,13]tetracosane]-1′(24′),8′,10′,12′,20′,22′-hexaene-2,7′(1H)-dione

Abstract

In the title compound, C33H29NO4, the acenaphthyl­ene ring system is essentially planar (r.m.s. deviation = 0.0290 Å). The pyrrolidine ring adopts a C-envelope conformation with a C atom displaced by 0.671 (2) Å from the mean-plane formed by the remaining ring atoms. The pyrrolidine ring is fused to acenaphthyl­ene ring system making a dihedral angle of 88.0 (7)°. In the crystal, mol­ecules are linked into R 2 2(9) dimers via C—H⋯N and C—H⋯O hydrogen bonds. Two C atoms act as donors to the same O atom acceptor, resulting in the formation of R 2 1(7) ring motifs. These two motifs combine to form hydrogen-bonded sheets running along the a- and b-axis directions.