rac-7-[(2E)-But-2-eno-yl]-13-chloro-N-cyclo-hexyl-7,8-dihydro-5H-isochromeno[4,3-c]phenanthridine-8-carboxamide

Abstract

In the title compound, C(31)H(29)ClN(2)O(3), the two heterocyclic rings, belonging to a system of five condensed rings, adopt conformations intermediate between twist-boat and sofa. The secondary amide group is involved in a weak intramolecular N-H⋯N hydrogen bond. In the crystal, molecules are linked by pairs of C-H⋯Cl hydrogen bonds to form inversion dimers. These dimers are linked via a C-H⋯O interaction to form chains propagating along the b-axis direction.

Fig. 1.

The molecular structure of the title compound with displacement ellipsoids drawn at the 40% probability level. H atoms are shown as a small spheres of arbitrary radius.

Fig. 2.

Centrosymmetric dimers by C—H···Cl hydrogen bonds. Symmetry code:(i) 1 - x, 1 - y, 1 - z.