4,4-Dimethyl-2-tosyl-2,3,3a,4-tetrahydro-1H,10H-pyrrolo[3,4-c]pyrano[6,5-b]indan-10-one

Abstract

The molecule of the title compound, C23H23NO4S, adopts a folded conformation, with the cyclopentadienone ring and tosyl groups arranged in an almost face-to-face fashion. The pyrrolidine ring has an envelope conformation and the dihydropyran ring is in a half-chair conformation. The pyrrolidine and dihydropyran rings are cis-fused. The indenone ring system is essentially planar, and the indene plane forms a dihedral angle of 25.12 (3)° with the sulfonyl-bound benzene ring. In the crystal structure, molecules translated by one unit cell along the a-axis direction are linked into a chain by C—H...O hydrogen bonds. The inversion-related molecules of adjacent chains are linked along the c axis by C—H...O hydrogen bonds into a sheet-like structure parallel to the ac plane.