Abstract
In both title compounds, C19H24N2O2, (I), and C17H21N3O2, (II), respectively, there are two molecules in the asymmetric unit and the pyrrolidine rings adopt envelope conformations. The conformations of the cyclooctane [in (I)] and 1-methyl-piperidone [in (II)] rings are boat-chair and chair, respectively. The indolin-2-one group is almost perpendicular to the pyrrolidine ring. Intermolecular C-H center dot center dot center dot O, N-H center dot center dot center dot O and N-H center dot center dot center dot N interactions provide stability to the structures.