Ethyl 1′′-benzyl-1′-methyl-2′′-oxodi­spiro­[indeno­[1,2-b]quinoxaline-11,3′-pyrrolidine-2′,3′′-indoline]-4′-carboxyl­ate

In the title compound, C₃₆H₃₀N₄O₃, the quinoxaline–indene system is roughly planar, with a maximum deviation from the mean plane of 0.218 Å for the C atom shared with the central pyrrolidine ring. This latter ring forms dihedral angles of 84.54 (7) and 83.91 (8)° with the quinoxaline–indene system and the indole ring, respectively. The central pyrrolidine ring has an envelope conformation with the N atom as the flap, while the pyrrolidine and five-membered rings of the indole group adopt twisted conformation and envelope (with the C atom bearing the quinoxaline–indene system as the flap) conformations, respectively. In the crystal, mol­ecules are linked via weak C—H...N hydrogen bonds, forming a chain running along [100].

Ethyl 1′′-benzyl-2′′-oxo-2′,3′,5′,6′,7′,7a'-hexa­hydro-1′H-di­spiro­[indeno­[1,2-b]quinoxaline-11,2′-pyrrolizine-3′,3′′-indoline]-1′-carboxyl­ate monohydrate

In the title compound, C₃₈H₃₂N₄O₃·H₂O, the quinoxaline–indene and pyrrolizine systems are essentially planar, with maximum deviations from their mean planes of 0.162 and 0.563 Å, respectively. The pyrrolizine ring forms dihedral angles of 88.53 (5) and 89.95 (8)° with the quinoxaline–indene system and the indoline ring, respectively. The central pyrrolidine ring has an envelope conformation with the C atom bearing the quinoxaline-indene system as the flap. The pyrrolidine ring of the indole system adopts an envelope conformation with the C atom bonded to the pyrrolizine ring N atom as the flap. The five-membered ring attached to the central pyrolidine ring adopts a twisted conformation. In the crystal, O—H...N and O—H...O hydrogen bonds between water mol­ecules and pyrrolizine N and carbonyl O atoms together with C—H...O inter­actions result in chains along [100].

Ethyl 8′′-chloro-1′-methyl-2,12′′-dioxo-12′′H-di­spiro­[indoline-3,2′-pyrrolidine- 3′,6′′-indolo[2,1-b]quinazoline]-4′-carboxyl­ate

In the title compound, C₂₉H₂₃ClN₄O₄, the quinazoline-indole system and the indolin-2-one system are each essentially planar, with maximum deviations from their mean planes of 0.150 (2) and 0.072 (2) Å, respectively. The central pyrrolidine ring adopts a twisted conformation on the C—C bond involving the spiro C atoms. Its mean plane forms dihedral angles of 83.37 (9) and 86.56 (8)°, respectively, with the indole rings of the indolin-2-one and quinazoline-indole systems. In the crystal, mol­ecules are linked via pairs of N—H...O hydrogen bonds, forming inversion dimers. The dimers are linked via C—H...O hydrogen bonds, forming chains propagating along [001].