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Demirbas N. Organocatalyzed Heterocyclic Transformations In Green Media: A Review. COCAT 2021. [DOI: 10.2174/22133372mta42odyo2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Neslihan Demirbas
- Karadeniz Technical University, Department of Chemistry, 61080 Trabzon,Turkey
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2
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Abstract
Background:
Since the discovery of metal-free catalysts or organocatalysts about twenty
years ago, a number of small molecules with different structures have been used to accelerate organic
transformations. With the development of environmental awareness, to obtain highly efficient
scaffolds, scientists have directed their studies towards synthetic methodologies that minimize
or preferably eliminate the formation of waste, avoid toxic solvents and reagents and use renewable
starting materials as far as possible.
Methods:
In this connection, the organocatalytic reactions providing efficiency and selectivity for
most of the transformations have become an endless topic in organic chemistry since several advantages
from both practical and environmental standpoints. Organocatalysts contributing to the transformation
of reactants into products with the least possible waste production, have been serving the
concept of green chemistry.
Results and Conclusion:
Organocatalysts have been classified based on their binding capacity to
the substrate with covalent or noncovalent interactions involving hydrogen bonding and electrostatic
interaction. Diverse types of small organic compounds including proline and its derivatives,
phase-transfer catalysts, (thio)urease, phosphoric acids, sulfones, N-oxides, guanidines, cinchona
derivatives, aminoindanol, and amino acids have been utilized as hydrogen bonding organocatalysts
in different chemical transformations.
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Affiliation(s)
- Neslihan Demirbas
- Karadeniz Technical University, Department of Chemistry, 61080 Trabzon, Turkey
| | - Ahmet Demirbas
- Karadeniz Technical University, Department of Chemistry, 61080 Trabzon, Turkey
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Cebeci YU, Ceylan S, Demirbas N, Karaoğlu ŞA. Microwave-assisted Synthesis of Novel Mannich Base and Conazole Derivatives Containing Biologically Active Pharmacological Groups. LETT DRUG DES DISCOV 2021. [DOI: 10.2174/1570180817999201016154034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
The aim of this study was to synthesize new mannich bases and conazol
derivatives with biological activity by the microwave-assisted method.
Introduction:
1,2,4-Triazole-3-one (3) acquired from tryptamine was transformed to the corresponding
carbox(thio)amides (6a-c) via several steps. Compounds 6a-c were refluxed with sodium hydroxide
to yield 1,2,4-triazole derivatives (7a-c). Compounds 3 and 7a-c on treatment with different
heterocyclic secondary amines in an ambiance with formaldehyde afforded the mannich bases 8-15
having diverse pharmacophore units with biologically active sites. The reaction of compound 3 and
2-bromo-1-(4-chlorophenyl) ethanone in the presence of sodium ethoxide gave the corresponding
product 2-substituted-1,2,4-triazole-3-one, 16, which was reduced to 1,2,4-triazoles (17). Synthesis
of compounds 18, 19, and 20 was carried out starting from compounds 17 with 4-chlorobenzyl
chloride (for 18), 2,4-dichlorobenzyl chloride (for 19), and 2,6-dichlorobenzyl chloride (for 20).
Methods:
he conventional technique was utilized for the synthesis of compounds, 3-7, and microwave-
assisted technique for the compounds, 8-20. That is, green chemistry techniques were applied
during these reactions. The structures of molecules were elucidated on the foundation of 1H NMR,
13C NMR, FT-IR, EI-MS methods, and elemental analysis. Novel synthesized molecules were investigated
for their antimicrobial activity using MIC (minimum inhibitory concentration) method.
Results:
Aminoalkylation of triazole derivatives 3 and 7a-c with fluoroquinolones such as ciprofloxacin
and norfloxacin provided an enhancement to the bioactivity of mannich bases 8-11 against
the tested microorganisms. The MIC values ranged between <0.24 and 3.9 μg/mL. Moreover, molecules
10 and 11 exhibited more effects on M. smegmatis than the other compounds by the MIC
values of <1 μg/mL. They have shown very good antituberculosis activity.
Conclusion:
Most of the synthesized structures were observed to have excellent antimicrobial activity
against most microorganisms taken into account. These molecules have better activity than the
standard drug ampicillin and streptomycin.
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Affiliation(s)
- Yıldız Uygun Cebeci
- Department of Chemistry, Karadeniz Technical University, 61080, Trabzon,Turkey
| | - Sule Ceylan
- Artvin Çoruh University, Department of Occupational Health and Safety, 08000, Artvin,Turkey
| | - Neslihan Demirbas
- Department of Chemistry, Karadeniz Technical University, 61080, Trabzon,Turkey
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Cebeci YU, Ceylan S, Demirbas N, Karaoğlu ŞA. Conventional and Microwave-Assisted Synthesis of Novel 1,2,4-Triazole Derivatives Containing Tryptamine Skeleton and Evaluation of Antimicrobial Activity. LETT ORG CHEM 2021. [DOI: 10.2174/1570178617999200721010921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
1,2,4-Triazole-3-one (3) obtained from tryptamine was transformed to the corresponding carbox(
thio)amides via several steps (6a-d). Their reaction with sodium hydroxide performed the 1,2,4-
triazole derivatives (7a-d). Compounds 7a-d treatment by 2-bromo-1-(4-chlorophenyl)ethanoneain an
ambiance with sodium ethoxide afforded the compounds (8a-d). The reduction reaction of 8a-d afforded
1,2,4-triazoles (9a-d). The synthesis of (10a-d), (11a-d) and (12a-d) was afforded treatment of
products 9a-d with 4-chlorobenzyl chloride (for 10a-d) or 2,6-dichlorobenzyl chloride (for 11a-d) or
2,4-dichlorobenzyl chloride (for 12a-d). Besides the improved of entirely novel agents having various
chemical features than those of the existing ones, another aim is to combined two or more groups into a
single hybrid compound. For this reason, a single compound containing more than one group, each
with various modes of effect, could be helpful for the cure of bacterial infections. Microwave-assisted
and conventional techniques were utilized for the syntheses. The structures of recently obtained molecules
were elucidated on the foundation of 1H NMR, <sup>13</sup>C NMR, FT IR, EI MS methods and elemental
analysis. All novel synthesized molecules were investigated for their antimicrobial activity using MIC
(minimum inhibitory concentration) method. The aminoalkylation of triazoles (7a-d) formed products
8a-d which have excellent activity against testing bacteria with values between 0.24 and 125 μg/mL.
Especially compounds 8a and 8d exhibited much better activity against E. coli than ampicillin used as
standard drug. The microwave process ensured a more efficient road to the creation of desired molecules.
The antibacterial examination demonstrated that after the carbonyl group is increased the antibacterial
activity of the compounds is greatly increased. That's why molecules formed as a result of the
alkylation reactions of triazoles has high activity.
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Affiliation(s)
- Yıldız Uygun Cebeci
- Karadeniz Technical University, Department of Chemistry, 61080, Trabzon,Turkey
| | - Sule Ceylan
- Artvin Coruh University, Department of Occupational Health and Safety, 08000, Artvin,Turkey
| | - Neslihan Demirbas
- Karadeniz Technical University, Department of Chemistry, 61080, Trabzon,Turkey
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Mermer A, Demirbas N, Cakmak U, Colak A, Demirbas A, Alagumuthu M, Arumugam S. Discovery of Novel Sulfonamide‐Based 5‐Arylidenerhodanines as Effective Carbonic Anhydrase (II) Inhibitors: Microwave‐Assisted and Ultrasound‐Assisted One‐Pot Four‐Component Synthesis, Molecular Docking, and Anti‐CA II Screening Studies. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3635] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Arif Mermer
- Department of ChemistryKaradeniz Technical University Trabzon Turkey
| | - Neslihan Demirbas
- Department of ChemistryKaradeniz Technical University Trabzon Turkey
| | - Ummuhan Cakmak
- Department of ChemistryKaradeniz Technical University Trabzon Turkey
| | - Ahmet Colak
- Department of ChemistryKaradeniz Technical University Trabzon Turkey
| | - Ahmet Demirbas
- Department of ChemistryKaradeniz Technical University Trabzon Turkey
| | | | - Sivakumar Arumugam
- Department of Biotechnology, School of Bio‐Science and TechnologyVIT Vellore India
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Mermer A, Demirbas N, Uslu H, Demirbas A, Ceylan S, Sirin Y. Synthesis of novel Schiff bases using green chemistry techniques; antimicrobial, antioxidant, antiurease activity screening and molecular docking studies. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.12.114] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Mermer A, Faiz O, Demirbas A, Demirbas N, Alagumuthu M, Arumugam S. Piperazine-azole-fluoroquinolone hybrids: Conventional and microwave irradiated synthesis, biological activity screening and molecular docking studies. Bioorg Chem 2019; 85:308-318. [PMID: 30654222 DOI: 10.1016/j.bioorg.2019.01.009] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 01/01/2019] [Accepted: 01/06/2019] [Indexed: 01/18/2023]
Abstract
A series of new 1,2,4-triazole and 1,3,4-oxadiazole derivatives was obtained via several steps sequential reactions of phenyl piperazine. Then, these compounds were converted to the corresponding fluoroquinolone hybrids via one pot three component Mannich reaction. All the reactions were examined under conventional and microwave mediated conditions, and optimum conditions were determined. The effect of different solvents and microwave power on microwave prompted reactions was investigated as well. All the newly synthesized compounds were characterized by FTIR, 1H NMR, 13C NMR and EI MS spectral techniques. The antimicrobial activity, DNA gyrase and Topoisomerase IV inhibition potentials were performed. The results obtained showed that fluoroquinolone hybrids possess good antimicrobial activity. Moreover, Fluoroquinolone-azole-piperazine hybrids synthesized in the present study displayed excellent DNA gyrase inhibition. To unveil the interaction mode of compounds to receptor, a molecular docking study was performed. With an average least binding energy of -9.5 kcal/mol, all compounds were found to have remarkable inhibitory potentials against DNA gyrase (E. coli).
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Affiliation(s)
- Arif Mermer
- Karadeniz Technical University, Department of Chemistry 61080 Trabzon, Turkey
| | - Ozlem Faiz
- Recep Tayyip Erdogan University, Department of Chemistry, 53100 Rize, Turkey
| | - Ahmet Demirbas
- Karadeniz Technical University, Department of Chemistry 61080 Trabzon, Turkey
| | - Neslihan Demirbas
- Karadeniz Technical University, Department of Chemistry 61080 Trabzon, Turkey.
| | - Manikandan Alagumuthu
- Dept. of Biotechnology, School of Bio-Sciences and Technology, VIT, Vellore 632014, India
| | - Sivakumar Arumugam
- Dept. of Biotechnology, School of Bio-Sciences and Technology, VIT, Vellore 632014, India
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8
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Mermer A, Demirbas N, Demirbas A, Colak N, Ayaz FA, Alagumuthu M, Arumugam S. Synthesis, biological activity and structure activity relationship studies of novel conazole analogues via conventional, microwave and ultrasound mediated techniques. Bioorg Chem 2018; 81:55-70. [DOI: 10.1016/j.bioorg.2018.07.036] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 07/21/2018] [Accepted: 07/31/2018] [Indexed: 10/28/2022]
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9
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Mermer A, Demirbas N, Colak A, Demir EA, Kulabas N, Demirbas A. One‐pot, Four‐Component Green Synthesis, Carbonic Anhydrase II Inhibition and Docking Studies of 5‐Arylidenerhodanines. ChemistrySelect 2018. [DOI: 10.1002/slct.201802677] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Arif Mermer
- Karadeniz Technical UniversityDepartment of Chemistry 61080 Trabzon TURKEY
| | - Neslihan Demirbas
- Karadeniz Technical UniversityDepartment of Chemistry 61080 Trabzon TURKEY
| | - Ahmet Colak
- Karadeniz Technical UniversityDepartment of Chemistry 61080 Trabzon TURKEY
| | | | - Necla Kulabas
- Department of Pharmaceutical ChemistryFaculty of PharmacyMarmara University Haydarpaşa 34668 İstanbul TURKEY
| | - Ahmet Demirbas
- Karadeniz Technical UniversityDepartment of Chemistry 61080 Trabzon TURKEY
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Basoglu Ozdemir S, Demirbas N, Demirbas A, Ayaz FA, Çolak N. Microwave‐Assisted Synthesis, Antioxidant, and Antimicrobial Evaluation of Piperazine‐Azole‐Fluoroquinolone Based 1,2,4‐Triazole Derivatives. J Heterocycl Chem 2018. [DOI: 10.1002/jhet.3336] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Serap Basoglu Ozdemir
- Department of Chemistry, Faculty of ScienceKaradeniz Technical University Trabzon Turkey
| | - Neslihan Demirbas
- Department of Chemistry, Faculty of ScienceKaradeniz Technical University Trabzon Turkey
| | - Ahmet Demirbas
- Department of Chemistry, Faculty of ScienceKaradeniz Technical University Trabzon Turkey
| | - Faik Ahmet Ayaz
- Department of Biology, Faculty of ScienceKaradeniz Technical University Trabzon Turkey
| | - Nesrin Çolak
- Department of Biology, Faculty of ScienceKaradeniz Technical University Trabzon Turkey
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Cebeci YU, Demirbas N, Ozdemir SB, Bayrak H, Demirbas A, Aksakal F, Karaoglu SA. Structure-Based Hybridization, Microwave Prompted Synthesis and Biological Evaluation of Novel 4-(2-Fluoro-4-Nitrophenyl)morpholine Derivatives. LETT ORG CHEM 2018. [DOI: 10.2174/1570178614666171120165630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Yildiz Uygun Cebeci
- Department of Chemistry, Karadeniz Technical University, 61080, Trabzon, Turkey
| | - Neslihan Demirbas
- Department of Chemistry, Karadeniz Technical University, 61080, Trabzon, Turkey
| | | | - Hacer Bayrak
- Chemistry and Chemical Processing Technologies Department, Karadeniz Technical University, 61750 Macka, Trabzon, Turkey
| | - Ahmet Demirbas
- Department of Chemistry, Karadeniz Technical University, 61080, Trabzon, Turkey
| | - Fatma Aksakal
- Department of Chemistry, Faculty of Science, Gebze Technical University, Kocaeli, 41400, Turkey
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12
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Ozdemir SB, Demirbas N, Demirbas A, Colak N, Ayaz FA. Design, Microwave-Assisted and Conventional Synthesis of New Hybrid Compounds Derived From 1-(4-Fluorophenyl)piperazine and Screening for Their Biological Activities. ChemistrySelect 2018. [DOI: 10.1002/slct.201800019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
| | - Neslihan Demirbas
- Department of Chemistry; Karadeniz Technical University; 61080 Trabzon Turkey
| | - Ahmet Demirbas
- Department of Chemistry; Karadeniz Technical University; 61080 Trabzon Turkey
| | - Nesrin Colak
- Department of Biology; Karadeniz Technical University; 61080 Trabzon Turkey
| | - Faik Ahmet Ayaz
- Department of Biology; Karadeniz Technical University; 61080 Trabzon Turkey
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13
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Ozdemir SB, Demirbas N, Cebeci YU, Bayrak H, Ceylan S, Karaoglu SA, Demirbas A. Microwave Assisted Synthesis and Biological Activity Screening Studies of Multisubstituted Piperazine-Azole Conjugates. Curr Org Synth 2018. [DOI: 10.2174/1570179415666180118130403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | - Neslihan Demirbas
- Department of Chemistry, Karadeniz Technical University, Trabzon 61080, Turkey
| | - Yıldız Uygun Cebeci
- Department of Chemistry, Karadeniz Technical University, Trabzon 61080, Turkey
| | - Hacer Bayrak
- Department of Chemistry and Chemical Processing Technology, Karadeniz Technical University, Macka, Trabzon 61750, Turkey
| | - Sule Ceylan
- Department of Occupational Health and Safety, Artvin Coruh University, Artvin 08100, Turkey
| | | | - Ahmet Demirbas
- Department of Chemistry, Karadeniz Technical University, Trabzon 61080, Turkey
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Mentese M, Demirbas N, Mermer A, Demirci S, Demirbas A, Ayaz FA. Novel Azole-Functionalited Flouroquinolone Hybrids: Design, Conventional and Microwave Irradiated Synthesis, Evaluation as Antibacterial and Antioxidant Agents. LETT DRUG DES DISCOV 2018. [DOI: 10.2174/1570180814666170823163540] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
The synthesis of new hybrid molecules consisting of several heterocyclic
pharmacophores namely fluoroquinolone, 1,2,4-triazole, 1,3,4-oxadiazole and piperazine was carried
out by conventional and successfully optimized microwave mediated techniques.
Methods:
The structures of new compounds were confirmed using spectroscopic techniques. These
compounds were screened for their antibacterial activity against E. coli, P. aeruginosa, Y. pseudotuberculosis,
S. aureus, E. faecalis, B. cereus and M. smegmatis.
Results and Conclusion:
Fourteen of these hybrids exhibited excellent antibacterial activities on
the test microorganisms when compared with ampicillin with the mic values varying between 0.03-
0.25 µg/mL.
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Affiliation(s)
- Meltem Mentese
- Department of Chemistry, Karadeniz Technical University, 61080 Trabzon, Turkey
| | - Neslihan Demirbas
- Department of Chemistry, Karadeniz Technical University, 61080 Trabzon, Turkey
| | - Arif Mermer
- Department of Chemistry, Karadeniz Technical University, 61080 Trabzon, Turkey
| | - Serpil Demirci
- Department of Medical Services and Techniques, Giresun University, Vocational High School of Health Service, 28100 Giresun, Turkey
| | - Ahmet Demirbas
- Department of Chemistry, Karadeniz Technical University, 61080 Trabzon, Turkey
| | - Faik Ahmet Ayaz
- Department of Biology, Karadeniz Technical University, 61080, Trabzon, Turkey
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Cebeci YU, Ozdemir SB, Ceylan S, Bayrak H, Demirbas A, Alpay-Karaoglu S, Demirbas N. Microwave-Assisted Synthesis of Some Hybrid Molecules Derived from Morpholine and Investigation of Their Antimicrobial Activities. ChemistrySelect 2017. [DOI: 10.1002/slct.201702097] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yıldız Uygun Cebeci
- Department of Chemistry; Karadeniz Technical University, Department of Chemistry; 61080 Trabzon Turkey
| | - Serap Basoglu Ozdemir
- Department of Chemistry; Karadeniz Technical University, Department of Chemistry; 61080 Trabzon Turkey
| | - Sule Ceylan
- Department of Occupational Health and Safety; ArtvinCoruh University; Artvin Turkey
| | - Hacer Bayrak
- Department of Chemistry and Chemical Processing Technology; Karadeniz Technical University; Trabzon Turkey
| | - Ahmet Demirbas
- Department of Chemistry; Karadeniz Technical University, Department of Chemistry; 61080 Trabzon Turkey
| | | | - Neslihan Demirbas
- Department of Chemistry; Karadeniz Technical University, Department of Chemistry; 61080 Trabzon Turkey
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Ozdemir SB, Demirbas N, Cebeci YU, Bayrak H, Mermer A, Ceylan S, Demirbas A. Synthesis and Antimicrobial Activities of Hybrid Heterocyclic Molecules Based on 1-(4-Fluorophenyl)piperazine Skeleton. LETT DRUG DES DISCOV 2017. [DOI: 10.2174/1570180814666170113145023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | - Neslihan Demirbas
- Department of Chemistry, Karadeniz Technical University, Trabzon, Turkey
| | | | - Hacer Bayrak
- Department of Chemistry and Chemical Processing Technology, Karadeniz Technical University, Trabzon, Turkey
| | - Arif Mermer
- Department of Chemistry, Karadeniz Technical University, Trabzon, Turkey
| | - Sule Ceylan
- Department of Occupational Health and Safety, Artvin Coruh University, Artvin, Turkey
| | - Ahmet Demirbas
- Department of Chemistry, Karadeniz Technical University, Trabzon, Turkey
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Demirci S, Aksakal F, Colak N, Ulker S, Demirbas A, Demirbas N. Structure-Based Hybridization, Conventional and Microwave Irradiated Synthesis, Biological Evaluation and Molecular Docking Studies of New Compounds Derived from Thiomorpholin. LETT DRUG DES DISCOV 2017. [DOI: 10.2174/1570180813666161024165613] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Basoglu Ozdemir S, Uygun Cebeci Y, Bayrak H, Mermer A, Ceylan S, Demirbas A, Alpay Karaoglu S, Demirbas N. Synthesis and antimicrobial activity of new piperazine-based heterocyclic compounds. HETEROCYCL COMMUN 2017. [DOI: 10.1515/hc-2016-0125] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractThe hydrazide
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Ceylan S, Bayrak H, Ozdemir S, Uygun Y, Mermer A, Demirbas N, Ulker S. Novel Microwave Assisted Synthesis and Antimicrobial Activity of New Quinolone-Hybrids. LETT ORG CHEM 2016. [DOI: 10.2174/1570178613666160927125221] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Mentese M, Demirci S, B. Ozdemir S, Demirbas A, Ulker S, Demirbas N. Microwave Assisted Synthesis and Antimicrobial Activity Evaluation of New Heterofunctionalized Norfloxacine Derivatives. LETT DRUG DES DISCOV 2016. [DOI: 10.2174/1570180813666160712222922] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Demirci S, Mermer A, Ak G, Aksakal F, Colak N, Demirbas A, Ayaz FA, Demirbas N. Conventional and Microwave‐assisted Total Synthesis, Antioxidant Capacity, Biological Activity, and Molecular Docking Studies of New Hybrid Compounds. J Heterocycl Chem 2016. [DOI: 10.1002/jhet.2760] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Serpil Demirci
- Department of Crop Production and Technology, Bulancak Kadir Karabas School of Applied ScienceGiresun University 28000 Giresun Turkey
| | - Arif Mermer
- Department of ChemistryKaradeniz Technical University 61080 Trabzon Turkey
| | - Gokhan Ak
- Department of BiologyRecep Tayyip Erdoğan University 53100 Rize Turkey
| | - Fatma Aksakal
- Department of ChemistryGebze Technical University 41400 Kocaeli Turkey
| | - Nesrin Colak
- Department of BiologyKaradeniz Technical University 61080 Trabzon Turkey
| | - Ahmet Demirbas
- Department of ChemistryKaradeniz Technical University 61080 Trabzon Turkey
| | - Faik Ahmet Ayaz
- Department of BiologyKaradeniz Technical University 61080 Trabzon Turkey
| | - Neslihan Demirbas
- Department of ChemistryKaradeniz Technical University 61080 Trabzon Turkey
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Ceylan S, Bayrak H, Basoglu Ozdemir S, Uygun Y, Mermer A, Demirbas N, Ulker S. Microwave-assisted and conventional synthesis of novel antimicrobial 1,2,4-triazole derivatives containing nalidixic acid skeleton. HETEROCYCL COMMUN 2016. [DOI: 10.1515/hc-2016-0019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
AbstractCarbothioamides
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Ceylan S, Bayrak H, Demirbas A, Ulker S, Alpay-Karaoglu S, Demirbas N. Synthesis of some new hybride molecules containing several azole moieties and investigation of their biological activities. Russ J Bioorg Chem 2014. [DOI: 10.1134/s1068162014030145] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Ceylan S, Bayrak H, Demirbas A, Ulker S, Alpay-Karaoglu S, Demirbas N. Synthesis of somenew hybride molecules containing several azole moieties and investigation of their biological activities. Bioorg Khim 2014; 40:341-356. [PMID: 25898742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
1,2,4-Triazole-3-one prepared from tryptamine was converted to the corresponding carbotioamides by several steps. Their treatment with ethyl bromoacetate or 4-chlorophenacyl bromide produced the corresponding 5-oxo-1,3-thiazolidine or 3-(4-chlorophenyl)-1,3-thiazole derivatives. Acetohydrazide derivative that was obtained starting from tryptamine, was converted to the corresponding Schiff basis and sulfonamide by the treatment with suitable aldehydes and benzensulphonyl chloride, respectively. 2-[(4-Amino-5-thioxo-4,5-dihydro-1H-1,2,4-triazole-3-yl)methyl]-4-[2-(1H-indole-3-yl)ethyl]-5-methyl-2,4-dihydro-3H-1,2,4-triazole-3-one was synthesized starting from hydrazide via the formation of the corresponding 1,3,4-oxadiazole compound, while the other bitriazole compounds were obtained by intramolecular cyclisation of carbothioamides in basic media. The treatment of 1,2,4-triazole or 1,3,4-oxadiazole compound with several amines generated the corresponding Mannich bases. Ethyl (2-amino-1,3-thiazole-4-yl)acetate was converted to the corresponding 1,3,4-oxadiazole derivative, arylidenehydrazides, 1,2,4-triazole-3-one and 5-oxo-1,3-oxazolidine derivatives by several steps. The structural assignments of new compounds were based on their elemental analysis and spectral (FT IR, 1H NMR, 13C NMR and LC-MS) data. The antimicrobial, antilipase and antiurease activity studies revealed that some of the synthesized compounds showed antimicrobial, antilipase and/or antiurease activity.
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Basoglu S, Ulker S, Alpay-Karaoglu S, Demirbas N. Microwave-assisted synthesis of some hybrid molecules containing penicillanic acid or cephalosporanic acid moieties and investigation of their biological activities. Med Chem Res 2013; 23:3128-3143. [PMID: 24719549 PMCID: PMC3973943 DOI: 10.1007/s00044-013-0898-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Accepted: 12/13/2013] [Indexed: 11/24/2022]
Abstract
Ethyl 4-amino-2-fluorophenylpiperazin-1-carboxylates containing a 1,3-oxazol(idin)e, 5-thioxo-1,2,4-triazole, 1,3,4-thiadiazole, 5-thioxo-1,3,4-oxadiazole, or 1,3-thiazole nucleus were obtained starting from ethyl piperazine-1-carboxylate (1) by several steps. The treatment of amine, 3 or hydrazide, 9 with several aromatic aldehydes generated the corresponding arylmethyleneamino (3a–f) or arylidenehydrazino (12a–c) compounds. The Mannich reaction between the 1,2,4-triazole or 1,3,4-oxadiazole compounds and 7-aca produced cephalosporanic acid derivatives. Penicillanic acid derivatives were obtained when 6-apa was used in the Mannich reactions. The synthesized compounds were screened for their antimicrobial, antilipase, and antiurease activities. Some of them were found to possess good-moderate antimicrobial activity against the test microorganisms. Two compounds exhibited antiurease activity, and four of them displayed antilipase activity.
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Affiliation(s)
- Serap Basoglu
- Department of Chemistry, Faculty of Sciences, Karadeniz Technical University, 61080 Trabzon, Turkey
| | - Serdar Ulker
- Department of Biology, Recep Tayyip Erdogan University, 53100 Rize, Turkey
| | | | - Neslihan Demirbas
- Department of Chemistry, Faculty of Sciences, Karadeniz Technical University, 61080 Trabzon, Turkey
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Demirci S, Demirbas A, Ulker S, Alpay-Karaoglu S, Demirbas N. Synthesis of Some Heterofunctionalized Penicillanic Acid Derivatives and Investigation of Their Biological Activities. Arch Pharm (Weinheim) 2013; 347:200-20. [DOI: 10.1002/ardp.201300280] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Revised: 09/12/2013] [Accepted: 09/17/2013] [Indexed: 11/10/2022]
Affiliation(s)
- Serpil Demirci
- Department of Chemistry; Karadeniz Technical University; Trabzon Turkey
| | - Ahmet Demirbas
- Department of Chemistry; Karadeniz Technical University; Trabzon Turkey
| | - Serdar Ulker
- Department of Biology; Recep Tayyip Erdoğan University; Rize Turkey
| | | | - Neslihan Demirbas
- Department of Chemistry; Karadeniz Technical University; Trabzon Turkey
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Basoglu S, Demirbas A, Ulker S, Alpay-Karaoglu S, Demirbas N. Design, synthesis and biological activities of some 7-aminocephalosporanic acid derivatives. Eur J Med Chem 2013; 69:622-31. [DOI: 10.1016/j.ejmech.2013.07.040] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 07/23/2013] [Accepted: 07/25/2013] [Indexed: 10/26/2022]
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Ceylan S, Bektas H, Bayrak H, Demirbas N, Alpay-Karaoglu S, Ülker S. Syntheses and Biological Activities of New Hybrid Molecules Containing Different Heterocyclic Moieties. Arch Pharm (Weinheim) 2013; 346:743-56. [DOI: 10.1002/ardp.201300161] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Revised: 07/23/2013] [Accepted: 07/26/2013] [Indexed: 11/09/2022]
Affiliation(s)
- Sule Ceylan
- Department of Forest Industrial Engineering; Artvin Çoruh University; Artvin Turkey
| | - Hakan Bektas
- Faculty of Arts and Sciences, Department of Chemistry; Giresun University; Giresun Turkey
| | - Hacer Bayrak
- Department of Chemistry; Karadeniz Technical University; Trabzon Turkey
| | - Neslihan Demirbas
- Department of Chemistry; Karadeniz Technical University; Trabzon Turkey
| | | | - Serdar Ülker
- Department of Biology; Recep Tayyib Erdogan University; Rize Turkey
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Mentese MY, Bayrak H, Uygun Y, Mermer A, Ulker S, Karaoglu SA, Demirbas N. Microwave assisted synthesis of some hybrid molecules derived from norfloxacin and investigation of their biological activities. Eur J Med Chem 2013; 67:230-42. [PMID: 23871903 DOI: 10.1016/j.ejmech.2013.06.045] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Revised: 06/19/2013] [Accepted: 06/23/2013] [Indexed: 11/25/2022]
Abstract
Norfloxacin was converted to 7-(4-amino-2-fluorophenyl)piperazin derivative (2) via the formation of nitro compound. The synthesis of the norfloxacin derivatives containing 1,3-thiazole or 1,3-thiazolidin moiety was performed from the reaction of 4-chlorophenacylbromide or ethyl bromoacetate with compounds 4-7 obtained starting from 2. 3-Fluoro-4-[4-(2-methoxyphenyl)piperazin-1-yl]aniline (14), 5-{[4-(2-methoxyphenyl)piperazin-1-yl]methyl}-4-phenyl-4H-1,2,4-triazole-3-thiol (18) and {[4-(2-methoxy phenyl)piperazin-1-yl]methyl}-1,3,4-oxadiazol-2-thiol (19) were obtained starting from 1-(2-methoxyphenyl)piperazine by several steps. The treatment of hydrazide (16) with several aldehydes afforded N'-[(2-hydroxyphenyl)methylen]- (20), N'-[(3-hydroxy-4-methoxy phenyl)methylen]- (21) or N'-[1H-indol-3-ylmethylene]-2-[4-(2-methoxyphenyl)piperazin-1-yl]acetohydrazide (22). Then, compounds 14, 18, 19 and 22 were condensed with 7-[4-(chloroacetyl)piperazin-1-yl]-1-ethyl-6-fluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (3) that was obtained from norfloxacine. All newly synthesized compounds were screened for their antimicrobial activities and some of them exhibited excellent activity. Moreover, one compound was found to have antiurease activity.
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Basoglu S, Yolal M, Demirci S, Demirbas N, Bektas H, Karaoglu SA. Design, synthesis and antimicrobial activities of some azole derivatives. Acta Pol Pharm 2013; 70:229-236. [PMID: 23614278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Three new 1,3,4-oxadiazole, 1,3-thiazolidine and 1,2,4-triazole derivatives were obtained starting from furan-2-carbohydrazide. Then, 1,2,4-triazole compound was converted to the corresponding Mannich bases using several secondary amines including piperidine, piperazine, morpholine or thiomorpholine moiety. The synthesis of 5-(furan-2-yl)-4-{[(4-methoxyphenyl)methylidene]amino}-4H-1,2,4-triazole-3-thiol (XIII) was performed starting from furan-2-carbohydrazide by three steps. The structures of the synthesized compounds were well characterized by elemental analyses, IR, 1H NMR, 13C NMR and mass spectral studies. Newly synthesized compounds were screened for their antimicrobial activities and some of them displayed activity against the tested microorganisms.
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Affiliation(s)
- Serap Basoglu
- Karadeniz Technical University, Department of Chemistry, 61080 Trabzon, Turkey
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Sahin D, Bayrak H, Demirbas A, Demirbas N, Alpay-Karaoglu S. Design and synthesis of some azole derivatives as potential antimicrobial agents. Med Chem Res 2012. [DOI: 10.1007/s00044-012-9992-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Bektas H, Demirbas A, Demirbas N, Karaoglu SA. Synthesis and biological activity studies of new hybrid molecules containing tryptamine moiety. Med Chem Res 2010. [DOI: 10.1007/s00044-010-9531-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Bayrak H, Demirbas A, Demirbas N, Karaoglu SA. Synthesis of some new 1,2,4-triazoles starting from isonicotinic acid hydrazide and evaluation of their antimicrobial activities. Eur J Med Chem 2009; 44:4362-6. [PMID: 19647352 DOI: 10.1016/j.ejmech.2009.05.022] [Citation(s) in RCA: 125] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2008] [Revised: 05/18/2009] [Accepted: 05/20/2009] [Indexed: 11/24/2022]
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Bayrak H, Demirbas A, Karaoglu SA, Demirbas N. Synthesis of some new 1,2,4-triazoles, their Mannich and Schiff bases and evaluation of their antimicrobial activities. Eur J Med Chem 2009; 44:1057-66. [DOI: 10.1016/j.ejmech.2008.06.019] [Citation(s) in RCA: 164] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2008] [Revised: 06/19/2008] [Accepted: 06/20/2008] [Indexed: 10/21/2022]
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Demirbas A, Sahin D, Demirbas N, Karaoglu SA. Synthesis of some new 1,3,4-thiadiazol-2-ylmethyl-1,2,4-triazole derivatives and investigation of their antimicrobial activities. Eur J Med Chem 2008; 44:2896-903. [PMID: 19167136 DOI: 10.1016/j.ejmech.2008.12.005] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2008] [Revised: 11/10/2008] [Accepted: 12/08/2008] [Indexed: 10/21/2022]
Abstract
4-Amino-2-[(5-arylamino-4,5-dihydro-1,3,4-thiadiazol-2-yl)methyl]-5-(4-methylphenyl)-2,4-dihydro-3H-1,2,4-triazol-3-ones (3a-c) were obtained in acidic media via the formation of 2-[(4-amino-3-aryl-5-oxo-4,5-dihydro-1H-1,2,4-triazol-1-yl)acetyl]-N-arylhydrazinecarbothioamides (2a-c), and then, compound 3b was converted to methylated derivative, 4. The basic treatment of carbothioamide derivatives, 2a-c, afforded 4-amino-2-[(4-aryl-5-sulphanyl-4H-1,2,4-triazol-3-yl)methyl]-5-(4-methylphenyl)-2,4-dihydro-3H-1,2,4-triazol-3-ones (5a-c). The alkylation reactions of compounds 4H-1,2,4-triazol-3-ylmethyl-5-(4-methylphenyl)-2,4-dihydro-3H-1,2,4-triazol-3-one derivatives (5a-c) were performed by using methyl iodide or ethyl bromide in the presence of sodium ethoxide, while the treatment of the same intermediates, 5a-c, with aromatic aldehydes produced 2-{[4-(4-aryl)-5-sulphanyl-4H-1,2,4-triazol-3-yl]methyl}-4-(arylmethylene)amino-5-(4-methylphenyl)-2,4-dihydro-3H-1,2,4-triazol-3-ones (8a-d). The synthesis of 4-amino-(or arylideneamino)-5-(4-methylphenyl)-2-{[(4-methylpiperazin-1-yl or morpholin-4-ylethyl)methyl]-4-aryl-5-thioxo-4,5-dihydro-1H-1,2,4-triazol-3-yl}methyl-2,4-dihydro-3H-1,2,4-triazol-3-ones (7a, b and 9) was performed by a one pot three-component Mannich reaction involving the corresponding compounds, 4-(substituted)amino-4H-1,2,4-triazol-3-ylmethyl-5-(4-methylphenyl)-2,4-dihydro-3H-1,2,4-triazol-3-one derivatives 5a, b and 8a, methylpiperazine or 2-(4-morpholino)ethylamine and formaldehyde. The newly synthesized compounds were well characterized by elemental analyses, IR, (1)H NMR, (13)C NMR and mass spectral studies. They were also screened for their microbial activities. The antimicrobial activity study revealed that some of which 2a, c, 3c, 5a-c, 8a-d showed good activity against a variety of microorganisms.
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Affiliation(s)
- Ahmet Demirbas
- Department of Chemistry, Karadeniz Technical University, Trabzon, Turkey.
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Abstract
New 2-phenacyl-1,2,4-triazol-3-ones were obtained by the reaction of 5-alkyl-1,2,4-triazol-3-ones with alpha-bromoacetophenone in alkaline medium. Selective reduction of the side chain carbonyl group to hydroxy group was achieved with NaBH4. The reaction of some compounds containing a phenolic hydroxyl with 4-toluenesulfonyl chloride or benzyl bromide in the presence of NaOH led to tosylated or benzylated derivatives. The tosylation or benzylation at the alcoholic hydroxyl was carried out in the presence of sodium metal. Some of the newly synthesized compounds revealed an antimicrobial activity; 6 of 14 new compounds that were studied by the National Cancer Institute were found to possess antitumor activity.
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Demirbas N, Karaoglu SA, Demirbas A, Çelik E. Synthesis and antimicrobial activities of some new [1,2,4]triazolo[3,4-b][1,3,4]thiadiazoles and [1,2,4]triazolo[3,4-b] [1,3,4]thiadiazines. ARKIVOC 2005. [DOI: 10.3998/ark.5550190.0006.108] [Citation(s) in RCA: 72] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Demirbas N, Karaoglu SA, Demirbas A, Sancak K. Synthesis and antimicrobial activities of some new 1-(5-phenylamino-[1,3,4]thiadiazol-2-yl)methyl-5-oxo-[1,2,4]triazole and 1-(4-phenyl-5-thioxo-[1,2,4]triazol-3-yl)methyl-5-oxo- [1,2,4]triazole derivatives. Eur J Med Chem 2004; 39:793-804. [PMID: 15337292 DOI: 10.1016/j.ejmech.2004.06.007] [Citation(s) in RCA: 148] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2004] [Revised: 06/11/2004] [Accepted: 06/14/2004] [Indexed: 10/26/2022]
Abstract
Acetic acid ethyl esters containing 5-oxo-[1,2,4]triazole ring (2) were synthesized by the condensation of compounds 1a-f with ethyl bromoacetate in basic media. The reaction of compounds 2a-f with hydrazine hydrate led to the formation of acid hydrazides (3a-f). The treatment of compounds 3 with two divers aromatic aldehydes resulted in the formation of arylidene hydrazides as cis-trans conformers (4a,c,e,f, 5a,e,f). The thiosemicarbazide derivatives (6a,c,d,f) were afforded by the reaction of corresponding compounds 3 with phenylisothiocyanate. The treatment of compounds 6a,c,d,f with sulfuric acidic caused the conversion of side-chain of compounds 6a,c,d,f into 1,3,4-thiadiazol ring; thus, compounds 7a,c,d,f were obtained. On the other hand, the cyclization of compounds 6a,c,d,f in the presence of 2 N NaOH resulted in the formation of compounds 8a,c,d,f containing two [1,2,4]triazole rings which are linked to each other via a methylene bridge. Compounds 4a, f, 5a, 7a, d, f, 8a and d have shown antimicrobial activity against one or more microorganism, but no antifungal activity has been observed against yeast like fungi. Also inhibitory effect on mycelial growth by compounds 4e, 7d and 8f has been observed. Compounds 4c and 5f were found to possess antitumor active towards breast cancer.
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Affiliation(s)
- Neslihan Demirbas
- Department of Chemistry, Karadeniz Technical University, 61080 Trabzon, Turkey.
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