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Soliman AM, Abd El-Wahab HAA, Akincioglu H, Gülçin İ, Omar FA. Piperazine-2-carboxylic acid derivatives as MTDLs anti-Alzheimer agents: Anticholinesterase activity, mechanistic aspect, and molecular modeling studies. Bioorg Chem 2024; 142:106916. [PMID: 37913584 DOI: 10.1016/j.bioorg.2023.106916] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 10/10/2023] [Accepted: 10/11/2023] [Indexed: 11/03/2023]
Abstract
Development of Multitarget-Directed Ligands (MTDLs) is a promising approach to combat the complex etiologies of Alzheimer's disease (AD). Herein we report the design, synthesis, and characterization of a new series of 1,4-bisbenzylpiperazine-2-carboxylic acid derivatives 3-5(a-g), 7a-f, 8a-s, and their piperazine-2-yl-1,3,4-oxadiazole analogs 6a-g. In vitro inhibitory effect against Electrophorus electricus acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) from Equine serum was evaluated using modified Ellman's method, considering donepezil and tacrine as reference drugs. Lineweaver-Burk plot analysis of the results proved competitive inhibition of AChE and BChE with Ki values, in low micromolar range. The free carboxylic acid series 4a-g showed enhanced selectivity for AChE. Hence, 4c, 1,4-bis (4-chlorobenzyl)-piperazinyl-2-carboxylic acid), was the most active member of this series (Ki (AChE) = 10.18 ± 1.00 µM) with clear selectivity for AChE (SI ∼ 17.90). However, the hydroxamic acids 7a-f and carboxamides 8a-s congeners were more potent and selective inhibitors of BChE (SI ∼ 5.38 - 21862.5). Extraordinarily, 1,4-bis (2-chlorobenzyl)-piperazinyl-2-hydroxamic acid 7b showed promising inhibitory activity against BChE enzyme (Ki = 1.6 ± 0.08 nM, SI = 21862.5), that was significantly superior to that elicited by donepezil (Ki = 12.5 ± 2.6 µM) and tacrine (Ki = 17.3 ± 2.3 nM). Cytotoxicity assessment of 4c and 7b, on human neuroblastoma (SH-SY5Y) cell lines, revealed lower toxicity than staurosporine and was nearly comparable to that of donepezil. Molecular docking and molecular dynamics simulation afforded unblemished insights into the structure-activity relationships for AChE and BChE inhibition. The results showed stable binding with fair H-bonding, hydrophobic and/or ionic interactions to the catalytic and peripheral anionic sites of the enzymes. In silico predicted ADME and physicochemical properties of conjugates showed good CNS bioavailability and safety parameters. In this regard, compound (7b) might be considered as a promising inhibitor of BChE with an innovative donepezil-based anti-Alzheimer activity. Further assessments of the most potent AChE and BChE inhibitors as potential MTDLs anti-Alzheimer's agents are under investigation with our research group and will be published later.
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Affiliation(s)
- Aya M Soliman
- Department of Medicinal Chemistry, Faculty of Pharmacy, Assiut University, 71526 Assiut, Egypt
| | - Hend A A Abd El-Wahab
- Department of Medicinal Chemistry, Faculty of Pharmacy, Assiut University, 71526 Assiut, Egypt
| | - Hulya Akincioglu
- Department of Chemistry, Faculty of Science and Arts, Agri-Ibrahim Cecen University, 04100 Agri, Turkey
| | - İlhami Gülçin
- Department of Chemistry, Faculty of Science, Ataturk University, 25240 Erzurum, Turkey.
| | - Farghaly A Omar
- Department of Medicinal Chemistry, Faculty of Pharmacy, Assiut University, 71526 Assiut, Egypt.
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Aydin T, Akincioglu H, Gumustas M, Gulcin I, Kazaz C, Cakir A. human monoamine oxidase (hMAO) A and hMAO B inhibitors from Artemisia dracunculus L. herniarin and skimmin: human mononamine oxidase A and B inhibitors from A. dracunculus L. ACTA ACUST UNITED AC 2021; 75:459-466. [PMID: 32598328 DOI: 10.1515/znc-2019-0227] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Accepted: 05/25/2020] [Indexed: 12/28/2022]
Abstract
The aim of this study was to investigate the effects of extracts and pure Artemisia dracunculus L. (tarragon) metabolites on the antimonoamine oxidase and anticholinesterase activities. The compounds were characterized as stigmasterol (1), herniarin (2), (2E,4E)-1-(piperidin-1-yl)undeca-2,4-diene-8,10-diyn-1-one (3), (2E,4E)-N-isobutylundeca-2,4-dien-8,10-diynamide (4), 3,4-dehydroherniarin (5) and skimmin (6) by 1H-NMR, 13C-NMR, 1D and 2D NMR methods. The compounds 5 and 6 were isolated from tarragon for the first time. The extracts and pure compounds have inhibitory effects on the human monoamine oxidase (hMAO) A and B enzymes, whereas they did not exhibit any anticholinesterase activities. Among the tarragon compounds, only 2 and 6 compounds showed the inhibitory effects against hMAO A (IC50 = 51.76 and 73.47 μM, respectively) and hMAO B (IC50 = 0.84 and 1.63 mM, respectively). In the study, herniarin content in the extracts was also analysed by high-performance liquid chromatography and it was found that there was a relationship between the inhibition effects of the extracts and their herniarin content.
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Affiliation(s)
- Tuba Aydin
- Department of Pharmacognosy, Faculty of Pharmacy, Agri Ibrahim Cecen University, Agri04100, Turkey
| | - Hulya Akincioglu
- Department of Biochemistry, Faculty of Science and Letters, Agri Ibrahim Cecen University, Agri04100, Turkey
| | | | - Ilhami Gulcin
- Department of Chemistry, Faculty of Science, Ataturk University, Erzurum25070, Turkey
| | - Cavit Kazaz
- Department of Chemistry, Faculty of Science, Ataturk University, Erzurum25070, Turkey
| | - Ahmet Cakir
- Department of Chemistry, Faculty of Science and Letters, Kilis 7 Aralik University, Kilis79000, Turkey
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Abstract
Background:
Compound containing sulfonamide, pyrazole and chalcone groups are
important in medicinal chemistry. They have a wide range of biological activities, including carbonic
anhydrase (CA) inhibitory activities.
Introduction:
Carbonic anhydrase I and II inhibitors are used for the treatment of diseases, such as
retinal and cerebral edema (CA I), epilepsy, and glaucoma (CA II). However, the currently available
drugs have some limitations or side effects. Thus, there is a need for new drug candidates to
overcome these issues. In this study, a series of compounds, (E)-4-(4-(3-aryl)-3-oxoprop-1-en-1-yl)-
3-phenyl-1H-pyrazol-1-yl) benzenesulfonamides MS4-MS10, were designed to discover new CA
inhibitors using a hybrid approach.
Methods:
Compounds MS4-MS10 were synthesized as shown in Scheme 1, and their chemical
structures were confirmed by 1H NMR, 13C NMR, and HRMS spectra. The CAs (E.C.4.2.1.1) inhibitory
effects of MS4-MS10 were tested on the hCA I and II isoenzymes using previously reported
procedures.
Results:
The CA inhibitors MS4–MS10 gave IC50 values (nM) of 27.8–87.3 towards hCA I and
24.4–54.8 towards hCA II while the IC50 values for reference drug acetazolamide were 384.2 (hCA I)
and 36.9 (hCA II). MS7 and MS9 exhibited 13.8 (hCA I) and 1.5 (hCA II) times more potent CA
inhibition than the reference compound acetazolamide, respectively.
Conclusion:
MS7 (Ar: 2,4,5-trimethoxy phenyl) and MS9 (Ar: 3,4-dimethoxy phenyl) were the
most promising compounds of our series with the lowest IC50 values towards hCA I and hCA II,
respectively, and can be considered for further studies.
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Affiliation(s)
- Mehtap Tugrak
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Ataturk University, Erzurum, Turkey
| | - Halise Inci Gul
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Ataturk University, Erzurum, Turkey
| | - Hulya Akincioglu
- Department of Chemistry, Faculty of Sciences and Arts, Agri Ibrahim Cecen University, Agri, Turkey
| | - Ilhami Gulcin
- Department of Chemistry, Faculty of Science, Ataturk University, Erzurum, Turkey
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Aksu K, Akincioglu H, Gulcin I, Kelebekli L. Concise syntheses and some biological activities of dl-2,5-di-O-methyl-chiro-inositol, dl-1,4-di-O-methyl-scyllo-inositol, and dl-1,6-dibromo-1,6-dideoxy-2,5-di-O-methyl-chiro-inositol. Arch Pharm (Weinheim) 2020; 354:e2000254. [PMID: 32997390 DOI: 10.1002/ardp.202000254] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 07/24/2020] [Revised: 09/07/2020] [Accepted: 09/10/2020] [Indexed: 11/11/2022]
Abstract
The regio- and stereospecific synthesis of O-methyl-chiro-inositols and O-methyl-scyllo-inositol was achieved, starting from p-benzoquinone. After preparing dimethoxy conduritol-B as a key compound, regiospecific bromination of the alkene moiety of dimethoxy conduritol-B and acid-catalyzed ring opening of dimethoxydiacetate conduritol-B epoxide with Ac2 O afforded the desired new chiro-inositol derivatives and scyllo-inositol derivative, respectively. Spectroscopic methods were employed for the characterization of all synthesized compounds. The novel inositols (11-17) had effective inhibition profiles against human carbonic anhydrase isoenzymes I and II (hCA I and II) and acetylcholinesterase (AChE). The novel inositols 11-17 were found to be effective inhibitors against AChE, hCA I, and hCA II enzymes. Ki values were calculated in the range of 87.59 ± 7.011 to 237.95 ± 17.75 μM for hCA I, 65.08 ± 12.39 to 538.98 ± 61.26 μM for hCA II, and 193.28 ± 43.13 to 765.08 ± 209.77 μM for AChE, respectively. Also, due to the inhibitory effects of the novel inositols 11-17 against the tested enzymes, these novel inositols are potential drug candidates to treat some diseases such as glaucoma, epilepsy, leukemia, and Alzheimer's disease.
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Affiliation(s)
- Kadir Aksu
- Department of Chemistry, Faculty of Sciences and Arts, Ordu University, Ordu, Turkey
| | - Hulya Akincioglu
- Department of Chemistry, Faculty of Sciences and Arts, Agri Ibrahim Cecen University, Agri, Turkey
| | - Ilhami Gulcin
- Department of Chemistry, Faculty of Sciences, Ataturk University, Erzurum, Turkey
| | - Latif Kelebekli
- Department of Chemistry, Faculty of Sciences and Arts, Ordu University, Ordu, Turkey
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Polat Kose L, Bingol Z, Kaya R, Goren AC, Akincioglu H, Durmaz L, Koksal E, Alwasel SH, Gülçin İ. Anticholinergic and antioxidant activities of avocado (Folium perseae) leaves – phytochemical content by LC-MS/MS analysis. International Journal of Food Properties 2020. [DOI: 10.1080/10942912.2020.1761829] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Leyla Polat Kose
- Vocational School, Department of Pharmacy Services, Beykent University, Buyukcekmece, Istanbul, Turkey
| | - Zeynebe Bingol
- Faculty of Sciences, Department of Chemistry, Atatürk University, Erzurum, Turkey
| | - Ruya Kaya
- Faculty of Sciences, Department of Chemistry, Atatürk University, Erzurum, Turkey
- Central Research and Application Laboratory, Agri Ibrahim Cecen University, Agri, Turkey
| | - Ahmet C. Goren
- Department of Analytical Chemistry, Faculty of Pharmacy, Bezmialem Vakif University, Istanbul, Turkey
- Drug Application and Research Center, Bezmialem Vakif University, Istanbul, Turkey
| | - Hulya Akincioglu
- Department of Chemistry, Faculty of Sciences and Arts, Agri Ibrahim Cecen University, Agri, Turkey
| | - Lokman Durmaz
- Department of Medical Services and Technology, Cayirli Vocational School, Erzincan Binali Yildirim University, Cayirli, Erzincan, Turkey
| | - Ekrem Koksal
- Faculty of Sciences and Arts, Department of Chemistry, Erzincan Binali Yildirim University, Erzincan, Turkey
| | - Saleh H. Alwasel
- King Saud University, Department of Zoology, College of Science, Saudi Arabia
| | - İlhami Gülçin
- Faculty of Sciences, Department of Chemistry, Atatürk University, Erzurum, Turkey
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El-Sayed NAE, Farag AES, Ezzat MAF, Akincioglu H, Gülçin İ, Abou-Seri SM. Design, synthesis, in vitro and in vivo evaluation of novel pyrrolizine-based compounds with potential activity as cholinesterase inhibitors and anti-Alzheimer's agents. Bioorg Chem 2019; 93:103312. [DOI: 10.1016/j.bioorg.2019.103312] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 09/09/2019] [Accepted: 09/23/2019] [Indexed: 01/17/2023]
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Gulcin I, Kaya R, Goren AC, Akincioglu H, Topal M, Bingol Z, Cetin Çakmak K, Ozturk Sarikaya SB, Durmaz L, Alwasel S. Anticholinergic, antidiabetic and antioxidant activities of cinnamon (cinnamomum verum) bark extracts: polyphenol contents analysis by LC-MS/MS. International Journal of Food Properties 2019. [DOI: 10.1080/10942912.2019.1656232] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Ilhami Gulcin
- Department of Chemistry, Faculty of Sciences, Atatürk University, Erzurum, Turkey
| | - Ruya Kaya
- Department of Chemistry, Faculty of Sciences, Atatürk University, Erzurum, Turkey
- Central Research and Application Laboratory, Agri Ibrahim Cecen University, Agri, Turkey
| | - Ahmet C. Goren
- Department of Analytical Chemistry, Faculty of Pharmacy, Bezmialem Vakif University, Istanbul, Turkey
- Drug Application and Research Center, Bezmialem Vakif University, Istanbul, Turkey
| | - Hulya Akincioglu
- Department of Chemistry, Faculty of Sciences and Arts, Agri Ibrahim Cecen University, Agri, Turkey
| | - Meryem Topal
- Vocational School of Health Services, Gumushane University, Gumushane, Turkey
| | - Zeynebe Bingol
- Department of Chemistry, Faculty of Sciences, Atatürk University, Erzurum, Turkey
| | - Kader Cetin Çakmak
- Department of Chemistry, Faculty of Sciences, Atatürk University, Erzurum, Turkey
| | - Sevim B. Ozturk Sarikaya
- Department of Food Engineering, Faculty of Engineering and Natural Sciences, Gumushane University, Gumushane, Turkey
| | - Lokman Durmaz
- Department of Medical Services and Technology, Cayirli Vocational School, Erzincan Binali Yildirim University, Erzincan, Turkey
| | - Saleh Alwasel
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
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