title: (4-Nitrophenyl)(1,2,3,9-tetrahydro-pyrrolo[2,1-b]quinazolin-3-yl)methanol monohydrate.
abstract: In the crystal structure of the title compound, C(18)H(17)N(3)O(3)·H(2)O, the mol-ecules are linked by O-H⋯O and O-H⋯N hydrogen bonds, resulting in a chain along the a axis. The crystal structure is stabilized by weak inter-molecular C-H⋯π (ring) hydrogen bonds and aromatic π⋯π stacking inter-actions [centroid-centroid distance = 3.902 (1) Å] between the pyrimidino rings of the quinazoline system. The tricyclic quinazoline fragment is almost planar (rms deviation = 0.0139 Å) with the two methylene C atoms of the pyrrolo ring deviating by 0.148 (2) and -0.081 (3) Å from the plane through the other atoms. The 4-nitrophenyl ring makes a dihedral angle of 12.55 (7)° with the tricyclic ring system.
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: Burkhon Zh
authors.initials: BZh
authors.lastname: Elmuradov
authors.forename: Charoskhon E
authors.initials: CE
authors.lastname: Makhmadiyarova
authors.forename: Kambarali K
authors.initials: KK
authors.lastname: Turgunov
authors.forename: Bakhodir
authors.initials: B
authors.lastname: Tashkhodjaev
authors.forename: Khusnutdin M
authors.initials: KM
authors.lastname: Shakhidoyatov