title: Methyl 1-ethyl-3'-[hy-droxy(naphthalen-1-yl)meth-yl]-1'-methyl-2-oxo-spiro-[indo-line-3,2'-pyrrolidine]-3'-carboxyl-ate.
abstract: In the title compound, C27H28N2O4, the pyrrolidine ring adopts a twist conformation. The plane of the indole ring is almost perpendicular to that of the pyrrolidine ring, making a dihedral angle of 88.50 (6)°. The planes of the naphthyl ring system and the pyrrolidine ring are tilted by an angle of 55.86 (5)°. The mol-ecular conformation is stabilized by intra-molecular O-H⋯O and O-H⋯N hydrogen bonds.
authors.affiliation: Department of Life Sciences and Chemistry, Roskilde University, DK-4000 Roskilde, Denmark.
authors.forename: Vinodhkumar
authors.initials: V
authors.lastname: Vijayakumar
authors.affiliation: Department of Chemistry, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark.
authors.forename: Gunther H
authors.initials: GH
authors.lastname: Peters
authors.affiliation: Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai 600 025, India.
authors.forename: M
authors.initials: M
authors.lastname: Suresh
authors.affiliation: Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai 600 025, India.
authors.forename: Raghunathan
authors.initials: R
authors.lastname: Raghavachary
authors.affiliation: Department of Physics, Presidency College, Chennai 600 005, India.
authors.forename: G
authors.initials: G
authors.lastname: Jagadeesan