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In the title compound, C35H31N3O5S, the piperidine ring adopts an envelope conformation, with the methine C atom as the flap, and the pyran ring adopts a sofa conformation. The mean planes of these two rings are almost normal to one another, making a dihedral angle of 85.96 (5)°. The two phenyl rings, one attached to the pyrazole ring and the other to the pyran ring, are inclined to one another by 65.41 (11)°. They are inclined to the mean planes of the rings to which they are attached by 12.59 (11) and 70.09 (9)°, respectively. There is an intra-molecular C-H⋯π inter-action involving the tosyl-ate methyl group and the phenyl ring attached to the pyrazole ring. In the crystal, mol-ecules are linked by C-H⋯π inter-actions, forming ribbons parallel to (10-2). The ribbons are linked by slipped parallel π-π inter-actions involving inversion-related pyrazole rings [inter-centroid distance = 3.672 (2) Å], forming slabs parallel to (001). A preliminary report of this structure has been published [Bakthadoss et al. (2014 ▶). Eur. J. Org. Chem. pp. 1505-1513].

acta crystallographica. section e

Crystal structure of methyl 1-methyl-3,5-diphenyl-7-tosyl-3,6,7,11b-tetrahydropyrazolo[4′,3′:5,6]pyrano[3,4-<i>c</i>]quinoline-5a(5<i>H</i>)-carboxylate

Crystal structure of methyl 1-methyl-3,5-diphenyl-7-tosyl-3,6,7,11b-tetrahydropyrazolo[4′,3′:5,6]pyrano[3,4-c]quinoline-5a(5H)-carboxylate