Browsing by Author "Celik, Ismail"
Now showing items 21-27 of 27
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N-[(2S)-2-(4-Bromophenyl)-4-oxo-1,3-thiazolidin-3-yl]pyridine-3-carboxamide
Akkurt, Mehmet; Celik, Ismail; Demir, Hale; Ozkirimli, Sumru; Buyukgungor, Orhan (WILEY-BLACKWELL, 2010)In the title compound, C(15)H(12)BrN(3)O(2)S, the dihedral angle between the pyridine and benzene rings is 73.17 (19)degrees. The five-membered 1,3-thiazolidine ring has an envelope conformation, with the S atom displaced ... -
N-[2-(4-Bromophenyl)-5-methyl-4-oxo-1,3-thiazolidin-3-yl]pyridine-3-carboxamide
Akkurt, Mehmet; Celik, Ismail; Demir, Hale; Ozkirimli, Sumru; Buyukgungor, Orhan (INT UNION CRYSTALLOGRAPHY, 2011)In the title compound, C16H14BrN3O2S, the atoms of the 1,3-thiazolidine group, except for the N and the C atoms attached to the bromobenzene ring, are disordered over two sets of sites with occupancies of 0.605 (13) and ... -
N-[2-(4-Chlorophenyl)-5-methyl-4-oxo-1,3-thiazolidin-3-yl]pyridine-3-carboxamide
Akkurt, Mehmet; Celik, Ismail; Demir, Hale; Ozkirimli, Sumru; Buyukgungor, Orhan (INT UNION CRYSTALLOGRAPHY, 2011)The title compound, C16H14ClN3O2S, crystallizes with two molecules in the asymmetric unit. In the 1,3-thiazolidine rings, the carbonyl O atoms, the S atoms, the methyl groups and the ring carbon attached to the methyl ... -
N-[5-Methyl-2-(2-nitrophenyl)-4-oxo-1,3-thiazolidin-3-yl]pyridine-3-carboxamide monohydrate
Akkurt, Mehmet; Celik, Ismail; Demir, Hale; Ozkirimli, Sumru; Buyukgungor, Orhan (WILEY-BLACKWELL, 2011)In the title compound, C16H14N4O4S center dot H2O, the benzene and pyridine rings make a dihedral angle of 85.8 (1)degrees. Both enantiomers of the chiral title compound are statistically disordered over the same position ... -
Synthesis, characterization, crystal structures, theoretical calculations and biological evaluations of novel substituted tacrine derivatives as cholinesterase and carbonic anhydrase enzymes inhibitors
Okten, Salih; Ekiz, Makbule; Kocyigit, Umit Muhammet; Tutar, Ahmet; Celik, Ismail; Akkurt, Mehmet; Gokalp, Faik; Taslimi, Parham; Gulcin, Ilhami (ELSEVIER SCIENCE BV, 2019)The six and seven hydrocycle membered disilylanilino acridine (tacrine) analogues (9-11) were synthesized by one-pot procedures. The structures of novel silyl tacrine derivatives were characterized by NMR spectroscopy, ... -
Synthesis, Crystal and Molecular Structure of 2',3',3'-Tribromo-2',3'-dihydrospiro[1,3-dioxolane-2,1'-indene]
Celik, Ismail (SPRINGER/PLENUM PUBLISHERS, 2013)The crystal structure of 2',3',3'-tribromo-2',3'-dihydrospiro[1,3-dioxolane-2,1'-indene], (C11H9Br3O2 ), has been determined by means of single-crystal X-ray diffraction methods. The title compound crystallizes in the ... -
Synthesis, Crystal Structure and Theoretical Characterization of (3R, 4R, 6S)-3,6-Dihydroxy-1-Menthene Isolated from Echinophora Tenuifolia
Celik, Ismail; Ersanli, Cem Cuneyt; Akkurt, Mehmet; Aksit, Huseyin; Erenler, Ramazan (GAZI UNIV, 2016)In the title compound, C10H18O2, the cyclohexene ring adopts a half-chair conformation. In the crystal strcuture, weak inter(sic)molecular O-H center dot center dot center dot O hydrogen bonds connect the adjacent molecules, ...