title: 1'-Allyl-1-(3,4-di-methyl-benzo-yl)-2-(4-methyl-1,3-thia-zol-5-yl)-1,2,5,6,7,7a-hexa-hydro-spiro-[pyrrolizine-3,3'-indolin]-2'-one.
abstract: In the title compound, C30H31N3O2S, the fused pyrrolidine ring bearing three substituents adopts an envelope conformation with the C atom bearing the benzoyl group as the flap. The other fused pyrrolidine ring adopts a twisted conformation about one of its C-C bonds. The dihedral angle between the isatin ring system and the methyl-thia-zole ring is 25.95 (8)°. An intra-molecular C-H⋯O inter-action closes an S(8) ring. In the crystal, mol-ecules are linked by C-H⋯O inter-actions, generating C(11) chains propagating in [001].
authors.affiliation: Department of Chemistry, Madras Christian College, Tambaram, Chennai 600 059, Tamil Nadu, India.
authors.forename: V
authors.initials: V
authors.lastname: Karthikeyan
authors.affiliation: Department of Chemistry, IIT Madras, Chennai 600 036, TamilNadu, India.
authors.forename: V
authors.initials: V
authors.lastname: Ramkumar
authors.affiliation: Department of Chemistry, Madras Christian College, Tambaram, Chennai 600 059, Tamil Nadu, India.
authors.forename: R Joel
authors.initials: RJ
authors.lastname: Karunakaran