5-Benzylidene-1-phenyl-2′′,3′′-dihydropiperidine-3-spiro-2′-pyrrolizidine-3′-spiro-3′′-1H-indole-4,2′′-dione

Abstract

In the pyrrolizidine unit of the title compound, C32H31N3O2, one pyrrolidine ring adopts an envelope conformation and the other adopts a twist conformation. The molecular conformation is stabilized by weak C—H...O intramolecular interactions and the crystal packing is stabilized by N—H...O and C—H...O hydrogen bonds.