Acta Cryst. (2013). E69, o1045-o1046 [ doi:10.1107/S160053681301533X ]
Abstract: In the title compound, C29H23N3O4, the 2-methylpyrrolidine ring adopts a twist conformation on the N-C bond involving the spiro C atom, while the hydropyran ring adopts an envelope conformation with the methine C atom bonded to the O atom as the flap. The mean plane of the indoline-2-one ring system is almost perpendicular to the mean plane of the pyrrolidine ring, making a dihedral angle of 89.73 (8)°. The latter ring makes dihedral angles of 47.80 (8) with the naphthalene ring system and 32.38 (8)° with the hydropyran ring mean plane. There is an intramolecular C-HO hydrogen bond involving the indoline-2-one O atom. In the crystal, adjacent molecules are linked via N-HO hydrogen bonds, forming chains propagating along . The chains are linked via weak C-HO hydrogen bonds, forming two-dimensional networks, lying parallel to (101), and consolidated by C-H interactions.
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