5-Chloro-5''-(4-chloro-benzyl-idene)-4'-(4-chloro-phen-yl)-1''-ethyl-1'-methyl-dispiro-[indoline-3,2'-pyrrolidine-3',3''-piperidine]-2,4''-dione

Synthesis and molecular modeling studies of indole-based antitumor agents

Potent antitumor active (HeLa, cervical carcinoma cell line) indole-based compounds were synthesized via azomethine ylide 1,3-dipolar cycloaddition with 3,5-arylidene-4-piperidones.

Regioselective synthesis and theoretical studies of an anti-neoplastic fluoro-substituted dispiro-oxindole

An anti-neoplastic fluoro-substituted dispiro-oxindole is described along with theoretical studies and single crystal X-ray analysis.

Synthesis and DFT studies of an antitumor active spiro-oxindole

DFT studies of an anti-proliferative active spiro-oxindole against diverse tumor cell lines were reported.

5-Chloro-5''-(4-chloro-benzyl-idene)-4'-(4-chloro-phen-yl)-1',1''-dimethyldi-spiro-[indoline-3,2'-pyrrolidine-3',3''-piperidine]-2,4''-dione

The racemic title compound, C₃₀H₂₆Cl₃N₃O₂, comprises two spiro links, the first connecting the piperidine and pyrrolidine rings and the other connecting the indole and pyrrolidine rings. The piperidine ring adopts a half-chair conformation, while the pyrrolidine ring has an envelope conformation with the unsubstituted C atom as the flap. The dihedral angles between the two p-Cl-substituted benzene rings and the indole ring are 33.13 (14) and 54.11 (14)°. In the crystal, mol­ecules form inversion dimers through pairs of N—H⋯O hydrogen bonds [graph set R₂²(8)]. Aromatic C—H⋯O hydrogen bonds extend these dimers into a ribbon structure, enclosing R²₂(14) ring motifs, along the a-axis direction.

5-Chloro-5''-[4-(di-methyl-amino)-benzyl-idene]-4'-[4-(di-methyl-amino)-phen-yl]-1',1''-di-methyl-dispiro-[indoline-3,2'-pyrrolidine-3',3''-piperidine]-2,4''-dione

The title compound, C34H38ClN5O2, has spiro links connecting the pyrrolidine ring and indole residue, as well as the piperidine and pyrrolidine rings. A half-chair conformation is found for the piperidine ring with the C atom connected to the spiro-C atom lying 0.738 (4) Å out of the plane of the remaining five atoms (r.m.s. deviation = 0.0407 Å). The methyl-ene C atom is the flap in the envelope conformation for the pyrrolidine ring. In the crystal, supra-molecular chains are sustained by alternating eight-membered {⋯HNCO}2 and 14-membered {⋯HC5O}2 synthons. Chains are connected into a three-dimensional network by (pyrrolidine-bound phenyl-meth-yl)C-H⋯π(pyrrolidine-bound phen-yl) edge-to-face inter-actions.