(6′R*,7′R*)-7′-(1,3,-Diphenyl-1H-pyrazol-4-yl)-1,2,5′,6′,7′,7a',3′′,4′′-octahydro-1′H,2′′H-dispiro[acenaphthylene-1,5′-pyrrolo[1,2-c][1,3]thiazole-6′,3′′-[1]benzopyran]-2,4′′-dione

Abstract

In the title compound, C40H29N3O3S, the pyran ring adopts a sofa conformation, the thiazolidine ring adopts a twisted conformation and the pyrrolidine ring adopts an envelope conformation with the N atom as the flap. The pyrazole ring is essentially planar [maximum deviation = 0.002 (2) Å] and forms dihedral angles of 4.8 (1) and 39.0 (1)°, respectively, with the benzene rings attached to the N and C atoms. The acenapthylene ring system is approximately planar [maximum deviation = 0.058 (2) Å] and forms dihedral angles of 85.9 (1) and 48.5 (1)°, respectively, with the pyrollothiazole and chromene ring systems. The molecular conformation is stabilized by three weak intramolecular C—H...O hydrogen bonds, which generate one S(8) and two S(6) ring motifs. In the crystal, pairs of C—H...O hydrogen bonds link centrosymmetrically related molecules into dimers, generating R22(14) ring motifs. The crystal packing also features pairs of C—H...π interactions, which link the dimers into a supramolecular chain along the b axis.