organic compounds
In the title compound, C28H24N2O4S, the indole ring system is planar, but the pyrrolidine and thiazole rings adopt an envelope and a twist conformation, respectively. The indole system makes a dihedral angle of 55.7 (1)° with the methoxyphenyl ring. The molecular packing in the crystal structure is stabilized by C—HO and N—HO hydrogen bonds.
organic compounds
In the title compound, C32H25NO4, the mean plane through the pyrrolizidine system is almost perpendicular [dihedral angle 88.9 (1)°] to that through one of the acenaphthene units, and the dihedral angle between the pyrrolizidine and the second acenaphthene system is 81.6 (1)°. In the pyrrolizidine system, one of the rings is in a half-chair conformation while the other is in an envelope conformation. The overall conformation is twisted about the fusion bond. The crystal structure is stabilized by a C—HO intermolecular hydrogen bond.