1′-allyl-1-(3,4-dimethylbenzoyl)-2-(4-methyl-1,3-thiazol-5-yl)-1,2,5, 6,7,7a-hexahydrospiro[pyrrolizine-3,3′-indolin]-2′-one

In the title compound, C30H31N3O 2S, 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 methylthiazole ring is 25.95(8)°. An intramolecular C - H⋯O interaction closes an S(8) ring. In the crystal, molecules are linked by C - H⋯O interactions, generating C(11) chains propagating in [001]. © 2014 CrossMark.