4′-(4-Bromo­benzo­yl)-1′-methyldispiro­[indole-3(2H),2′-pyrrolidine-3′,3′′(2′′H)-indole]-2,2′′-dione

In the title compound, C₂₆H₂₀BrN₃O₃, the central pyrrolidine ring adopts an envelope conformation. In the crystal structure, the mol­ecules exist as centrosymmetric N—H...O hydrogen-bonded dimers. The dimers are linked via C—H...O hydrogen bonds, forming a chain along the b axis.

4′-(4-Methoxy­benzo­yl)-1′-methyldispiro­[indole-3(2H),2′-pyrrolidine-3′,3′′(2′′H)-indole]-2,2′′-dione

In the title compound, C₂₇H₂₃N₃O₄, the pyrrolidine ring adopts a half-chair conformation. Inversion-related mol­ecules are linked via N—H...O hydrogen bonds into a zigzag chain. In addition, inter­molecular C—H...O and C—H...π hydrogen bonds are observed.