2-Methyl-4-(naphthalen-2-yl)-3a-nitro-3,3a,4,9b-tetra-hydro-2H-spiro-[chromeno[3,4-c]pyrrole-1,3'-indolin]-2'-one.

ABSTRACT: In the title compound, C29H23N3O4, the 2-methylpyrrolidine ring adopts a twist conformation on the N-C bond involving the spiro C atom, while the hydropyran ring adopts an envelope conformation with the methine C atom bonded to the O atom as the flap. The mean plane of the indoline-2-one ring system is almost perpendicular to the mean plane of the pyrrolidine ring, making a dihedral angle of 89.73?(8)°. The latter ring makes dihedral angles of 47.80?(8) with the naphthalene ring system and 32.38?(8)° with the hydropyran ring mean plane. There is an intra-molecular C-H?O hydrogen bond involving the indoline-2-one O atom. In the crystal, adjacent mol-ecules are linked via N-H?O hydrogen bonds, forming chains propagating along [100]. The chains are linked via weak C-H?O hydrogen bonds, forming two-dimensional networks, lying parallel to (101), and consolidated by C-H?? inter-actions.

SUBMITTER: Devi SK 

PROVIDER: S-EPMC3772478 | biostudies-other | 2013

REPOSITORIES: biostudies-other