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BİNGÖL ÖZAKPINAR, ÖZLEM

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BİNGÖL ÖZAKPINAR

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ÖZLEM

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2013 - 20202
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Author: KÜÇÜKGÜZEL, ŞÜKRİYE GÜNİZ × Has files: true ×

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    PublicationOpen Access
    Synthesis and Characterization of Celecoxib Derivatives as Possible Anti-Inflammatory, Analgesic, Antioxidant, Anticancer and Anti-HCV Agents
    (MDPI, 2013-03-21) ŞENER, AZİZE; Kucukguzel, S. Guniz; Coskun, Inci; Aydin, Sevil; Aktay, Goknur; Gursoy, Sule; Cevik, Ozge; Ozakpinar, Ozlem Bingol; Ozsavci, Derya; Sener, Azize; Kaushik-Basu, Neerja; Basu, Amartya; Talele, Tanaji T.
    A series of novel N-(3-substituted aryl/alkyl-4-oxo-1,3-thiazolidin-2-ylidene)-4-[5-(4-methylphenyl)-3-(trifluoromethyl)-1H-pyrazol-1-yl] benzenesulfonamides 2a-e were synthesized by the addition of ethyl alpha-bromoacetate and anhydrous sodium acetate in dry ethanol to N-(substituted aryl/alkylcarbamothioyl)-4-[5-(4-methylphenyl)-3-(trifluoro-methyl)- 1H-pyrazol-1-yl] benzene sulfonamides 1a-e, which were synthesized by the reaction of alkyl/aryl isothiocyanates with celecoxib. The structures of the isolated products were determined by spectral methods and their anti-inflammatory, analgesic, antioxidant, anticancer and anti-HCV NS5B RNA-dependent RNA polymerase (RdRp) activities evaluated. The compounds were also tested for gastric toxicity and selected compound 1a was screened for its anticancer activity against 60 human tumor cell lines. These investigations revealed that compound 1a exhibited anti-inflammatory and analgesic activities and further did not cause tissue damage in liver, kidney, colon and brain compared to untreated controls or celecoxib. Compounds 1c and 1d displayed modest inhibition of HCV NS5B RdRp activity. In conclusion, N-(ethylcarbamothioyl)-4-[5-(4-methylphenyl)- 3-(trifluoromethyl)-1H-pyrazol-1-yl] benzenesulfonamide (1a) may have the potential to be developed into a therapeutic agent.
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    PublicationOpen Access
    Synthesis and Anticancer and Antimicrobial Evaluation of Novel Ether-linked Derivatives of Ornidazole
    (TURKISH PHARMACISTS ASSOC, 2020-02-01) KÜÇÜKGÜZEL, İLKAY; Senkardes, Sevil; Kulabas, Necta; Bingol Ozakpinar, Ozlem; Kalayci, Sadik; Sahin, Fikrettin; Kucukguzel, Ilkay; Kucukguzel, S. Guniz
    Objectives: Some novel 1-(2-methyl-5-nitro-1H-imidazol-1-yl)-3-(substituted phenoxy)propan-2-ol derivatives (3a-g) were designed and synthesized. Materials and Methods: Compounds 3a-g were obtained by refluxing ornidazole (1) with the corresponding phenolic compounds (2a-g) in the presence of anhydrous K2CO3 in acetonitrile. Results: Following the structure elucidation, the in vitro antimicrobial activity and cytotoxic effects of compounds 3a-g on K562 leukemia and NIH/3T3 mouse embryonic fibroblast cells were measured. As a part of this study, the compliance of the compounds with the drug-likeness properties was evaluated. The physico-chemical parameters (log P, TPSA, nrotb, number of hydrogen bond donors and acceptors, logS) were calculated using the software OSIRIS. Conclusion: All the synthesized compounds except 3a showed significant activity (MIC=4-16 mu g mL(-)(1)) against the bacterial strain Bacillus subtilis as compared to the standard drug, whereas antileukemic activities were rather limited. Furthermore, all the compounds were nontoxic and the selectivity index outcome indicated that the antileukemic and antimicrobial effects of the compounds were selective with good estimated oral bioavailability and drug-likeness scores.