title: Crystal structure of (E)-9-(4-nitro-benzyl-idene)-8,9-di-hydro-pyrido[2,3-d]pyrrolo-[1,2-a]pyrimidin-5(7H)-one.
abstract: The title compound, C17H12N4O3, a pyrido-pyrrolo-pyrimidine derivative, is almost planar. The nitro-benzene ring is inclined to the mean plane of the 8,9-di-hydro-pyrido[2,3-d]pyrrolo-[1,2-a]pyrimidin-5(7H)-one moiety (r.m.s. deviation = 0.023 Å) by 6.8 (1)°. In the crystal, mol-ecules are linked via C-H⋯O and C-H⋯N hydrogen bonds, forming layers parallel to (101).
authors.affiliation: S. Yunusov Institute of the Chemistry of Plant Substances, Academy of Sciences of Uzbekistan, Mirzo Ulugbek Str. 77, Tashkent 100170, Uzbekistan.
authors.forename: Khamid U
authors.initials: KU
authors.lastname: Khodjaniyazov
authors.affiliation: A. S. Sadikov Institute of Bioorganic Chemistry, Academy of Sciences of Uzbekistan, Mirzo Ulugbek Str. 83, Tashkent 100125, Uzbekistan.
authors.forename: Jamshid M
authors.initials: JM
authors.lastname: Ashurov
keywords: 4-nitro­benzaldehyde; crystal structure; hydrogen bonding; pyrido­pyrimidine; pyrido­pyrrolo­pyrimidine; yl­idene derivative