Acta Cryst. (2003). E59, o711-o712  [ doi:10.1107/S1600536803008985 ]

1''-Benzyl-5''-benzylidene-1'-methyl-4'-phenyl-1H-indole-3-spiro-2'-pyrrolidine-3'-spiro-3''-piperidine-2(3H),3''-dione

X.-F. Li, Y.-Q. Feng, X.-F. Hu and M. Xu

Abstract: The title compound, C₃₆H₃₃N₃O₂, was synthesized by the intermolecular [3  +  2]-cycloaddition of azomethine ylide, derived from isatin and sarcosine by a decarboxylative route, and 1-benzyl-3,5-dibenzylidene-piperidin-4-one. There are two spiro junctions in the molecule, which consists of a nearly planar 2-oxindole ring, an envelope pyrrolidine ring and a chair piperidone ring. There is an intermolecular N-HO hydrogen bond, the NO distance being 2.835  (3)  Å.

Online 30 April 2003

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