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The title compound, (I) C28H24N4O4, is the trans diastereoisomer of the compound 1-[2-(4-nitrophenyl)-6-(5-phenyl-3-isoxazolyl)-1,2,3,4-tetrahydro-4-quinolinyl]-2-pyrrolidinone monohydrate, (II) [Gutierrez et al. (2011). Acta Cryst. E67, o175–o176]. The most obvious differences between the diastereoisomers are the dihedral angles between the isoxazole ring and the benzene and phenyl rings [47.0 (2); 56.4 (2) and 33.3 (2); 11.0 (2)°, respectively, for (II) 75.4 (2) and 5.8 (3), respectively, for (I)]. In the crystal of (I), the molecules are linked by N—H...O interactions into a chain along [001] with graph-set notation C(8).

In the title compound, [Pd(NO(3))(2)(C(10)H(17)NO)(2)], the Pd(II) centre is located on an inversion center and is coordinated in a square-planar geometry by two O atoms of the monodentate nitrate groups and two carbonyl O atoms of the 1-cyclo-hexyl-pyrrolidin-2-one ligands.

The title compound, C14H19NO3, was obtained as one of the two isomers of a Sharpless asymmetric dihydroxylation reaction of (1S)-1-[(1R)-1-phenylethyl]-4-vinylpyrrolidin-2-one. The absolute stereochemistry of this isomer was determined from the known stereochemistry (R) at the bridge C atom between the phenyl and pyrrolidine rings. The molecules form one-dimensional tapes along the b axis via hydrogen bonding between the carbonyl O atom and the alcohol groups of neighbouring molecules. These assemble into sheets via interdigitative stacking of the phenyl rings and C—H...O interactions.