Acta Cryst. (2013). E69, o23-o24
[ doi:10.1107/S1600536812049082 ]

Ethyl 27-oxo-15-oxa-2,20-diazahexacyclo[18.6.1.0^1,8.0^2,6.0^9,14.0^21,26]heptacosa-9,11,13,21,23,25-hexaene-7-carboxylate

S. Narayanan, T. Srinivasan, S. Purushothaman, R. Raghunathan and D. Velmurugan

Abstract: In the title compound, C₂₇H₃₀N₂O₄, the pyrrolidine ring adopts a twisted conformation. The indoline ring system is almost perpendicular to the mean plane of the pyrrolidine ring, making a dihedral angle of 81.7 (8)°. In the crystal, molecules are linked into centrosymmetric dimers with graph-set motif R₂²(16) via pairs of C-HO hydrogen bonds. The terminal ethyl group of the ester group is disordered over two sets of sites, with a site-occupancy ratio of 0.587 (11):0.413 (11).

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