Ajjampura C. Vinayaka

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Thrombocytopenia is a serious issue connected with the pathogenesis of several human diseases including chronic inflammation, arthritis, Alzheimer's disease, cardiovascular diseases (CVDs) and other oxidative stress-associated pathologies. The indiscriminate use of antibiotics and other biological drugs are reported to result in thrombocytopenia, which is(More)
A new strategy was developed to synthesize 1,2-disubstituted 4-quinolones in good yield starting from 1,3-bisaryl-monothio-1,3-diketone substrates. The synthesized compounds were evaluated for antimalarial activity using Plasmodium falciparum strains. All compounds, except for two, showed good activity. Of these, seven compounds exhibited an excellent(More)
The asymmetric unit of the title compound, C(22)H(26)N(4)O(2)S, contains two crystallographically independent mol-ecules (A and B). The isobutyl unit of mol-ecule B is disordered over two orientations with refined occupancies of 0.785 (6) and 0.215 (6). In each mol-ecule, intra-molecular C-H⋯S hydrogen bonds generate S(6) ring motifs. The essentially planar(More)
The title 1,2,4-triazole compound, C(34)H(34)FN(5)S, exists in a trans configuration with respect to the acyclic C=N bond. An intra-molecular C-H⋯S contact generates a six-membered ring, producing an S(6) ring motif. The essentially planar 1,2,4-triazole ring [maximum deviation 0.008 (1) Å] is inclined at 21.43 (5) and 83.03 (6)°, respectively, with respect(More)
In the title compound, C18H15NO3, the isoxazole moiety adopts a shallow envelope conformation, with the C atom bearing the OH group displaced by 0.148 (1) Å from the mean plane through the other four atoms. The mean plane of this ring (all atoms) subtends dihedral angles of 87.19 (6) and 15.51 (7)° with the benzo-furan ring system (r.m.s. deviation = 0.007(More)
In the title compound, C(21)H(23)FN(4)S, the benzene rings of the isobutyl-phenyl and fluoro-benzene units form dihedral angles of 75.89 (7) and 13.26 (7)°, respectively, with the triazole ring. An intra-molecular C-H⋯S hydrogen-bonding contact generates an S(6) ring motif. In the crystal packing, pairs of N-H⋯S hydrogen bonds link neighbouring mol-ecules(More)
In the title compound, C(16)H(20)N(2)O(3)S, the thia-zolidine ring is approximately planar [maximum deviation = 0.020 (2) Å] and forms a dihedral angle of 86.20 (11)° with the benzene ring. The mean plane through the propanamide unit forms dihedral angles of 88.54 (12) and 76.36 (12)°, respectively, with the thia-zolidine and benzene rings. In the crystal(More)
In the title compound, C17H14ClNOS, the aromatic rings are inclined to one another by 64.22 (9)°. The acrylo-nitrile group (C=C-C N) is planar to within 0.003 (2) Å, with the S atom and the methyl C atom displaced from this plane by 0.2317 (6) and -0.637 (2) Å, respectively. In the crystal, mol-ecules are linked via pairs of C-H⋯π inter-actions, forming(More)
The title hydrazide compound, C(20)H(24)N(2)O(2), exists in a trans configuration with respect to the acyclic C=N bond and an intra-molecular O-H⋯N hydrogen bond generates an S(6) ring motif. The mean plane through the formohydrazide unit is essentially planar [maximum deviation = 0.025 (2) Å], and forms dihedral angles of 24.45 (16) and 87.14 (16)° with(More)
The asymmetric unit of the triclinic polymorph of the title compound, C21H25N3O3, consists of two mol-ecules, whereas for the monoclinic polymorph Z' = 1 [Fun et al. (2009 ▶). Acta Cryst. E65, o445]. The two mol-ecules exhibit an E configuration with respect to the C=N bond. The mol-ecules are linked into dimers by N-H⋯O and C-H⋯O hydrogen bonds forming R 2(More)