Kambarali K. Turgunov

Publications (11)5.16 Total impact

• Article: 5,7-Dihy-droxy-2-(3-hy-droxy-4,5-dimeth-oxy-phen-yl)-6-meth-oxy-4H-chromen-4-one.

  Shahobiddin M Adizov, Rimma F Mukhamathanova, Kambarali K Turgunov, Ildar D Sham'yanov, Bakhodir Tashkhodjaev
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  ABSTRACT: The title compound, C18H16O8, was isolated from the plant Artemisia baldshuanica Krasch et Zarp. The mol-ecule is approximately planar, with the exception of the terminal methyl groups, the C atoms of which devitate from their attached ring planes by 1.243 (5) and 1.168 (5) Å. The dihedral angle between the substituted benzopyran and benzene rings is 5.8 (1)°; this near planarity could be due to conjugation or a packing effect. Intra-molecular O-H⋯O and C-H⋯O hydrogen bonds occur. In the crystal, mol-ecules are connected by O-H⋯O hydrogen bonds involving the hy-droxy and carbonyl groups, forming hydrogen-bonded chains along [001] and [1-10]. The chains are linked by C-H⋯O inter-actions.
  Acta Crystallographica Section E Structure Reports Online 04/2013; 69(Pt 4):o578. · 0.35 Impact Factor
• Source

  Available from: PubMed Central

  Article: Diaqua-dichloridobis[quinazolin-4(1H)-one-κN(3)]nickel(II).

  Shirin Shomurotova, Kambarali K Turgunov, Nasir Mukhamedov, Bakhodir Tashkhodjaev
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  ABSTRACT: In the title complex, [NiCl(2)(C(8)H(6)N(2)O)(2)(H(2)O)(2)], the Ni(II) ion is located on an inversion center and is six-coordinated by two N atoms of 1H-quinazolin-4-one ligands, two chloride ions and two water mol-ecules. The water mol-ecules are involved in intra- and inter-molecular O-H⋯O and O-H⋯Cl hydrogen bonding. Inter-molecular N-H⋯O and N-H⋯Cl hydrogen bonds are formed between ligands. In addition, weak π-π inter-actions are observed between the benzene rings of the ligands [centroid-centroid distance = 3.580 (3) Å]. The inter-molecular hydrogen bonds and π-π inter-actions lead to the formation of a three-dimensional supra-molecular network.
  Acta Crystallographica Section E Structure Reports Online 06/2012; 68(Pt 6):m724. · 0.35 Impact Factor
• Source

  Available from: PubMed Central

  Article: 2,3-Dihydro-pyrrolo-[2,1-b]quinazoline-9(1H)-thione.

  Azizbek O Nasrullayev, Burkhon Zh Elmuradov, Kambarali K Turgunov, Bakhodir Tashkhodjaev, Khusnutdin M Shakhidoyatov
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  ABSTRACT: In the crystal, mol-ecules of the title compound, C(11)H(10)N(2)S, are connected by C-H⋯N inter-actions around threefold axes. Furthermore, they form stacks along the c axis showing π-π inter-actions between pyrimidine rings [centroid-centroid distance = 3.721 (1) Å]. The central ring is essentially planar with an r.m.s. deviation of 0.007 Å. The five-membered ring adopts an envelope conformation with the flap atom deviating by 0.241 (4) Å from the mean plane (r.m.s. deviation = 0.002 Å) through the other four ring atoms.
  Acta Crystallographica Section E Structure Reports Online 06/2012; 68(Pt 6):o1746. · 0.35 Impact Factor
• Source

  Available from: PubMed Central

  Article: (4-Nitrophenyl)(1,2,3,9-tetrahydro-pyrrolo[2,1-b]quinazolin-3-yl)methanol monohydrate.

  Burkhon Zh Elmuradov, Charoskhon E Makhmadiyarova, Kambarali K Turgunov, Bakhodir Tashkhodjaev, Khusnutdin M Shakhidoyatov
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  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.
  Acta Crystallographica Section E Structure Reports Online 07/2011; 67(Pt 7):o1680. · 0.35 Impact Factor
• Source

  Available from: PubMed Central

  Article: Poly[di-μ-chlorido-μ-(1,2,3,9-tetra-hydro-pyrrolo-[2,1-b]quinazolin-9-one-κN:O)-mercury(II)].

  Kambarali K Turgunov, Yutian Wang, Ulli Englert, Khusnutdin M Shakhidoyatov
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  ABSTRACT: In the crystal structure of the title two-dimensional network, [HgCl(2)(C(11)H(10)N(2)O)](n), the asymmetric unit consists of HgCl(2) dumbbells and one mol-ecule of the quinazoline unit. Pseudo-octa-hedrally coordinated Hg(II) cations are chloride-bridged via a crystallographic inversion centre leading to different Hg-Cl bonds (short and long) and linked by other Cl atoms via translation along the a axis. The quinazoline ligands connect the Hg-Cl-Hg-Cl chains by N and O atoms along the b axis, forming the two-dimensional network structure. The crystal structure is stabilized by weak non-classical C-H⋯Cl hydrogen bonds and aromatic π-π stacking inter-actions [centroid-centroid distances = 3.942 (4) and 3.621 (4) Å].
  Acta Crystallographica Section E Structure Reports Online 07/2011; 67(Pt 7):m953-4. · 0.35 Impact Factor
• Article: 11-(2-Oxopyrrolidin-1-ylmethyl)-1,2,3,4,5,6,11,11a-octahydropyrido[2,1-b]quinazolin-6-one dihydrate

  Zarif U. Samarov, Rasul Ya. Okmanov, Kambarali K. Turgunov, Tashkhodjaev Bakhodir, Khusnutdin M. Shakhidoyatov
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  ABSTRACT: In the crystal structure of the title compound, C17H21N3O2·2H2O, water molecules are mutually O—H...O hydrogen bonded and form infinite chains propagating along the b axis. Neighboring chains are linked by the quinazoline molecules by means of O—H...O=C hydrogen bonds, forming a two–dimensional network.
  Acta Crystallographica Section E. 01/2010;
• Article: 3-Benzyl-6-(2-chlorobenzoyl)-1,3-benzoxazol-2(3H)-one

  Yuldash R. Takhirov, Dilshod A. Dushamov, Kambarali K. Turgunov, Nasirkhon S. Mukhamedov, Khusniddin M. Shakhidoyatov
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  ABSTRACT: In the title compound, C21H14ClNO3, the benzoxazolone ring system is planar (r.m.s. deviation = 0.022 Å) and forms dihedral angles of 75.38 (10) and 65.92 (13)° with the mean planes of the chlorobenzoyl (r.m.s. deviation = 0.045 Å, excluding O atom) and benzyl (r.m.s. deviation = 0.023 Å) groups. The observed structure is stabilized by weak C—H...O hydrogen bonds and weak intermolecular C—H...π interactions.
  Acta Crystallographica Section E. 01/2010;
• Source

  Available from: PubMed Central

  Article: 11-(2-Oxopyrrolidin-1-ylmeth-yl)-1,2,3,4,5,6,11,11a-octa-hydro-pyrido[2,1-b]quinazolin-6-one dihydrate.

  Zarif U Samarov, Rasul Ya Okmanov, Kambarali K Turgunov, Bakhodir Tashkhodjaev, Khusnutdin M Shakhidoyatov
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  ABSTRACT: In the crystal structure of the title compound, C(17)H(21)N(3)O(2)·2H(2)O, water mol-ecules are mutually O-H⋯O hydrogen bonded and form infinite chains propagating along the b axis. Neighboring chains are linked by the quinazoline mol-ecules by means of O-H⋯O=C hydrogen bonds, forming a two-dimensional network.
  Acta Crystallographica Section E Structure Reports Online 01/2010; 66(Pt 4):o890. · 0.35 Impact Factor
• Source

  Available from: PubMed Central

  Article: 3-Benzyl-6-(2-chloro-benzo-yl)-1,3-benzoxazol-2(3H)-one.

  Yuldash R Takhirov, Dilshod A Dushamov, Kambarali K Turgunov, Nasirkhon S Mukhamedov, Khusniddin M Shakhidoyatov
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  ABSTRACT: In the title compound, C(21)H(14)ClNO(3), the benzoxazolone ring system is planar (r.m.s. deviation = 0.022 Å) and forms dihedral angles of 75.38 (10) and 65.92 (13)° with the mean planes of the chloro-benzoyl (r.m.s. deviation = 0.045 Å, excluding O atom) and benzyl (r.m.s. deviation = 0.023 Å) groups. The observed structure is stabilized by weak C-H⋯O hydrogen bonds and weak inter-molecular C-H⋯π inter-actions.
  Acta Crystallographica Section E Structure Reports Online 01/2010; 66(Pt 12):o3203. · 0.35 Impact Factor
• Source

  Available from: PubMed Central

  Article: 6,7,8,9,10,11-Hexahydro-13H-azocino[2,1-b]quinazolin-13-one.

  Rasul Ya Okmanov, Zafir U Samarov, Kambarali K Turgunov, Bakhodir Tashkhodjaev, Khusniddin M Shakhidoyatov
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  ABSTRACT: The title compound, C(14)H(16)N(2)O, is a synthetic analogue of quinazolone alkaloids with pyrrilo, pyrido and azopino rings. The quinazolinic part of the mol-ecule is generally planar within 0.037 (3) Å; the eight-membered ring exhibits an inter-mediate conformation between the chair and boat forms as it is typical for cyclo-octene rings. An ethyl-ene group of the azopino ring is disordered over two positions with a refined occupancy ratio of 0.910 (7):0.090 (7). In the crystal, the H atoms of the aromatic rings form weak C-H⋯O and C-H⋯N hydrogen bonds. One C-H⋯O hydrogen bond leads to the formation of a one-dimensional chain. Another C-H⋯O and a C-H⋯N bond link these chains, generating a three-dimensional network.
  Acta Crystallographica Section E Structure Reports Online 01/2009; 65(Pt 8):o1776. · 0.35 Impact Factor
• Source

  Available from: mdpi.com

  Article: Synthesis, tautomeric states and crystal structure of (Z)-ethyl 2-cyano-2-(3H-quinazoline-4-ylidene) acetate and (Z)-ethyl 2-cyano-2-(2-methyl-3H-quinazoline-4-ylidene) acetate.

  Muborak Tulyasheva, Bakhtiyor F Rasulev, Akmal G Tojiboev, Kambarali K Turgunov, Bakhodir Tashkhodjaev, Nasrulla D Abdullaev, Khusnutdin M Shakhidoyatov
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  ABSTRACT: The new compounds (Z)-ethyl 2-cyano-2-(3H- and 2-methyl-3H-quinazoline-4-ylidene) acetate (1 and 2, respectively) were synthesized by multi-step reactions. The structures in a solution have been determined by (1)H-NMR spectroscopy and in the crystal form by X-ray analysis. Molecule 1 crystallized in a primitive monoclinic cell, space group capital ER, P2(1/c). The cell dimensions are a=7.970(6) A, b=7.061(2) A, c=20.537(7) A, beta=97.69(5) degrees , V=1145.3(10) A(3). Molecule 2 crystallized in a triclinic cell, space group P-1, the cell dimensions are a=8.196(5) A, b=8.997(6) A, c=9.435(4) A, alpha=74.22(4) degrees, beta=89.75(4) degrees , gamma=74.07(5) degrees , V=641.9(6) A(3). In both compounds the presence of intra-molecular NH---O=C hydrogen bonding between the nitrogen atom in position 3 of the quinazoline ring and a carbonyl group of the ethyl cyanoacetate residue was proven by quantum-chemical, (1)H-NMR and X-ray methods.
  Molecules 02/2005; 10(9):1209-17. · 2.39 Impact Factor