1
|
Synthesis of 3-N-/O-/S-methyl-imidazo[1,2-a] pyridine derivatives for caspase-3 mediated apoptosis induced anticancer activity. Bioorg Chem 2022; 125:105882. [DOI: 10.1016/j.bioorg.2022.105882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 04/19/2022] [Accepted: 05/16/2022] [Indexed: 11/22/2022]
|
2
|
Karatas E, Foto E, Ertan-Bolelli T, Yalcin-Ozkat G, Yilmaz S, Ataei S, Zilifdar F, Yildiz I. Discovery of 5-(or 6)-benzoxazoles and oxazolo[4,5-b]pyridines as novel candidate antitumor agents targeting hTopo IIα. Bioorg Chem 2021; 112:104913. [PMID: 33945950 DOI: 10.1016/j.bioorg.2021.104913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 03/11/2021] [Accepted: 04/11/2021] [Indexed: 10/21/2022]
Abstract
Discovery of novel anticancer drugs which have low toxicity and high activity is very significant area in anticancer drug research and development. One of the important targets for cancer treatment research is topoisomerase enzymes. In order to make a contribution to this field, we have designed and synthesized some 5(or 6)-nitro-2-(substitutedphenyl)benzoxazole (1a-1r) and 2-(substitutedphenyl)oxazolo[4,5-b]pyridine (2a-2i) derivatives as novel candidate antitumor agents targeting human DNA topoisomerase enzymes (hTopo I and hTopo IIα). Biological activity results were found very promising for the future due to two compounds, 5-nitro-2-(4-butylphenyl)benzoxazole (1i) and 2-(4-butylphenyl)oxazolo[4,5-b]pyridine (2i), that inhibited hTopo IIα with 2 µM IC50 value. These two compounds were also found to be more active than reference drug etoposide. However, 1i and 2i did not show any satisfactory cyctotoxic activity on the HeLa, WiDR, A549, and MCF7 cancer cell lines. Moreover, molecular docking and molecular dynamic simulations studies for the most active compounds were applied in order to understand the mechanism of inhibition activity of hTopo IIα. In addition, in silico ADME/Tox studies were performed to predict drug-likeness and pharmacokinetic properties of all the tested compounds.
Collapse
Affiliation(s)
- Esin Karatas
- Ankara University, Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Ankara, Turkey
| | - Egemen Foto
- Necmettin Erbakan University, Faculty of Science, Department of Biotechnology, Konya, Turkey
| | - Tugba Ertan-Bolelli
- Ankara University, Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Ankara, Turkey
| | - Gozde Yalcin-Ozkat
- Ankara University, Biotechnology Institute, 0fef0 Yenimahalle, Ankara, Turkey; Recep Tayyip Erdogan University, Faculty of Engineering, Bioengineering Department, Rize, Turkey
| | - Serap Yilmaz
- Trakya University, Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Edirne, Turkey
| | - Sanaz Ataei
- Ankara University, Biotechnology Institute, 0fef0 Yenimahalle, Ankara, Turkey
| | - Fatma Zilifdar
- Selcuk University Faculty of Science, Department of Biochemistry, Konya, Turkey
| | - Ilkay Yildiz
- Ankara University, Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Ankara, Turkey.
| |
Collapse
|
3
|
New Benzoxazole Derivatives as Antiprotozoal Agents: In Silico Studies, Synthesis, and Biological Evaluation. J CHEM-NY 2021. [DOI: 10.1155/2021/6631868] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background. Benzoxazole derivatives have different biological activities. In pursuit of designing novel chemical entities with antiprotozoal and antimicrobial activities, benzoxazolyl aniline was utilized as a privileged scaffold of a series of (3-benzoxazole-2-yl) phenylamine derivatives, 3-benzoxazoloyl acetamide, and butyramide derivatives. Methods. These novel analogs were synthesized in straightforward simple chemistry without any quantitative chromatographic separations in reasonable yields. The biological evaluation of all target compounds as potential antimalarial, antileishmanial, antitrypanosomal, and antimicrobial agents was performed by various well-established cell-based methods. Results. Compounds 6d and 5a showed promising biological screening data. The amidation of 3-benzoxazolyl aniline 1 with the chloroacetyl functional group resulted in a good antimalarial activity and showed moderate inhibitory activities against leishmanial and trypanosomal spp. Moreover, chloroacetyl functionalization of benzoxazolyl aniline serves as a good early goal for constructing and synthesizing new antimicrobial and antiprotozoal agents. The molecular docking study rationalizes the relative inhibitory activity of compound 5a as an antimalarial agent with the deregulation of PfPNP activity which has emerged as a major mechanism of these targets.
Collapse
|
4
|
Palamarchuk IV, Matsukevich MV, Kulakov IV, Seilkhanov TМ, Fisyuk AS. Synthesis of N-substituted 2-aminomethyl-5-methyl-7-phenyloxazolo[5,4-b]pyridines. Chem Heterocycl Compd (N Y) 2019. [DOI: 10.1007/s10593-019-02537-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
5
|
Priyadarshani G, Nayak A, Amrutkar SM, Das S, Guchhait SK, Kundu CN, Banerjee UC. Scaffold-Hopping of Aurones: 2-Arylideneimidazo[1,2- a]pyridinones as Topoisomerase IIα-Inhibiting Anticancer Agents. ACS Med Chem Lett 2016; 7:1056-1061. [PMID: 27994737 DOI: 10.1021/acsmedchemlett.6b00242] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Accepted: 09/20/2016] [Indexed: 12/31/2022] Open
Abstract
Scaffold-hopping of bioactive natural product aurones has been studied for the first time. 2-Arylideneimidazo[1,2-a]pyridinones as potential topoisomerase IIα (hTopoIIα)-targeting anticancer compounds were considered. A multifunctional activator, polyphosphoric acid, enabled to realize a cascade reaction of 2-aminopyridine with 2,3-epoxyesters toward synthesis of 2-arylideneimidazo[1,2-a]pyridinones. Most of the compounds exhibited hTopoIIα-selective poison activity with efficiency more than etoposide and DNA-binding property, while not interacting with hTopo I. The compounds showed pronounced antiproliferative activities in nanomolar range with relatively poor toxicity to normal cells, inhibition of invasiveness, and apoptotic effect. The activities for inhibition of tubulin assembly, CDK1 and pCDK1, were also observed. Interestingly, the hTopoIIα inhibitory (in vitro and ex vivo studies) and antiproliferative activities of representative potent compounds were found to be manifold higher compared to corresponding parent aurones bearing alike substitutions, indicating the importance of such scaffold-hopping strategy in medicinal chemistry research.
Collapse
Affiliation(s)
- Garima Priyadarshani
- Department
of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S. A. S. Nagar, Mohali, Punjab 160062, India
| | - Anmada Nayak
- School
of Biotechnology, KIIT University, Campus-11, Patia, Bhubaneswar, Orissa 751024, India
| | - Suyog M. Amrutkar
- Department
of Pharmaceutical Technology (Biotechnology), National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S. A.
S. Nagar, Mohali, Punjab 160062, India
| | - Sarita Das
- School
of Biotechnology, KIIT University, Campus-11, Patia, Bhubaneswar, Orissa 751024, India
| | - Sankar K. Guchhait
- Department
of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S. A. S. Nagar, Mohali, Punjab 160062, India
| | - Chanakya N. Kundu
- School
of Biotechnology, KIIT University, Campus-11, Patia, Bhubaneswar, Orissa 751024, India
| | - Uttam C. Banerjee
- Department
of Pharmaceutical Technology (Biotechnology), National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S. A.
S. Nagar, Mohali, Punjab 160062, India
| |
Collapse
|
6
|
Parveen S S, Al-Alshaikh MA, Panicker CY, El-Emam AA, Arisoy M, Temiz-Arpaci O, Van Alsenoy C. Synthesis, vibrational spectroscopic investigations, molecular docking, antibacterial and antimicrobial studies of 5-ethylsulphonyl-2-(p-aminophenyl)benzoxazole. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.02.057] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
7
|
Li PH, Zeng P, Chen SB, Yao PF, Mai YW, Tan JH, Ou TM, Huang SL, Li D, Gu LQ, Huang ZS. Synthesis and Mechanism Studies of 1,3-Benzoazolyl Substituted Pyrrolo[2,3-b]pyrazine Derivatives as Nonintercalative Topoisomerase II Catalytic Inhibitors. J Med Chem 2015; 59:238-52. [DOI: 10.1021/acs.jmedchem.5b01284] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Peng-Hui Li
- School of Pharmaceutical
Sciences, Sun Yat-sen University, Guangzhou 510006, People’s Republic of China
| | - Ping Zeng
- School of Pharmaceutical
Sciences, Sun Yat-sen University, Guangzhou 510006, People’s Republic of China
| | - Shuo-Bin Chen
- School of Pharmaceutical
Sciences, Sun Yat-sen University, Guangzhou 510006, People’s Republic of China
| | - Pei-Fen Yao
- School of Pharmaceutical
Sciences, Sun Yat-sen University, Guangzhou 510006, People’s Republic of China
| | - Yan-Wen Mai
- School of Pharmaceutical
Sciences, Sun Yat-sen University, Guangzhou 510006, People’s Republic of China
| | - Jia-Heng Tan
- School of Pharmaceutical
Sciences, Sun Yat-sen University, Guangzhou 510006, People’s Republic of China
| | - Tian-Miao Ou
- School of Pharmaceutical
Sciences, Sun Yat-sen University, Guangzhou 510006, People’s Republic of China
| | - Shi-Liang Huang
- School of Pharmaceutical
Sciences, Sun Yat-sen University, Guangzhou 510006, People’s Republic of China
| | - Ding Li
- School of Pharmaceutical
Sciences, Sun Yat-sen University, Guangzhou 510006, People’s Republic of China
| | - Lian-Quan Gu
- School of Pharmaceutical
Sciences, Sun Yat-sen University, Guangzhou 510006, People’s Republic of China
| | - Zhi-Shu Huang
- School of Pharmaceutical
Sciences, Sun Yat-sen University, Guangzhou 510006, People’s Republic of China
| |
Collapse
|
8
|
Aki-Yalcin E, Ertan-Bolelli T, Taskin-Tok T, Ozturk O, Ataei S, Ozen C, Yildiz I, Yalcin I. Evaluation of inhibitory effects of benzothiazole and 3-amino-benzothiazolium derivatives on DNA topoisomerase II by molecular modeling studies. SAR AND QSAR IN ENVIRONMENTAL RESEARCH 2014; 25:637-649. [PMID: 25027467 DOI: 10.1080/1062936x.2014.923039] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
There has been considerable interest in DNA topoisomerases over the last decade, as they have been shown to be one of the major cellular targets in anticancer drug development. Previously we synthesized some benzothiazole derivatives and corresponding benzothiazolium forms, and tested their DNA inhibitory activity to develop novel antitumor agents. Among the 12 prepared compounds, compound BM3 (3-aminobenzothiazole-3-ium 4-methylbenzene sulfonate) exhibited extreme topoisomerase II inhibitory activity compared with the reference drug etoposide. We also tried to determine the DNA and enzyme binding abilities of BM3 and found that BM3 acted on topoisomerase II first at low doses, while it had also showed DNA minor groove binding properties at higher doses. In this study the interactions between DNA topoisomerase II and the compounds were examined in detail by molecular modelling studies such as molecular docking and pharmacophore analysis performed using Discovery Studio 3.5. As a result, it was found that benzothiazolium compounds exhibited a totally different mechanism than benzothiazoles by binding to the different amino acids at the active site of the protein molecule. 3-Aminobenzothiazoliums are worthy of carrying onto anticancer studies; BM3 especially would be a good anticancer candidate for preclinical studies.
Collapse
Affiliation(s)
- E Aki-Yalcin
- a Pharmaceutical Chemistry Department, Faculty of Pharmacy , Ankara University , Ankara , Turkey
| | | | | | | | | | | | | | | |
Collapse
|
9
|
Unsalan O, Sert Y, Ari H, Simão A, Yilmaz A, Boyukata M, Bolukbasi O, Bolelli K, Yalcin I. Micro-Raman, mid-IR, far-IR and DFT studies on 2-[4-(4-fluorobenzamido)phenyl]benzothiazole. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 125:414-421. [PMID: 24568790 DOI: 10.1016/j.saa.2014.01.118] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Revised: 01/23/2014] [Accepted: 01/27/2014] [Indexed: 06/03/2023]
Abstract
Molecular structure of 2-[4-(4-Fluorobenzamido)phenyl]benzothiazole was determined by quantum chemical calculations. MidIR and FarIR spectra were recorded at room temperature, with 4 cm(-1) resolution in the 4000-400 cm(-1) and 700-30 cm(-1) regions, respectively for the first time. Raman spectrum was recorded in the 4000-100 cm(-1) range. Optimized molecular structure and vibrational wavenumbers of the compound in its ground state have been calculated by using Density Functional Theory using B3LYP functional with 6-311++G(d,p) basis set. Vibrational wavenumbers were seen to be in good agreement with the experimental IR data. Furthermore, assignments of each vibrational mode were interpreted in terms of potential energy distributions in detail.
Collapse
Affiliation(s)
- O Unsalan
- University of Istanbul, Faculty of Science, Physics Department, Vezneciler-Fatih, TR-34134 Istanbul, Turkey.
| | - Y Sert
- Bozok University, Faculty of Art & Sciences, Physics Department, TR-66100 Yozgat, Turkey; Sorgun Vocational School, Bozok University, Yozgat 66100, Turkey
| | - H Ari
- Bozok University, Faculty of Art & Sciences, Chemistry Department, TR-66200 Yozgat, Turkey
| | - A Simão
- University of Coimbra, Chemistry Department, P-3004-535 Coimbra, Portugal
| | - A Yilmaz
- University of Istanbul, Faculty of Science, Physics Department, Vezneciler-Fatih, TR-34134 Istanbul, Turkey
| | - M Boyukata
- Bozok University, Faculty of Art & Sciences, Physics Department, TR-66100 Yozgat, Turkey
| | - O Bolukbasi
- University of Istanbul, Faculty of Science, Physics Department, Vezneciler-Fatih, TR-34134 Istanbul, Turkey
| | - K Bolelli
- Ankara University, Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Tandoğan, TR-06100 Ankara, Turkey
| | - I Yalcin
- Ankara University, Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Tandoğan, TR-06100 Ankara, Turkey
| |
Collapse
|
10
|
Ertan-Bolelli T, Musdal Y, Bolelli K, Yilmaz S, Aksoy Y, Yildiz I, Aki-Yalcin E, Yalcin I. Synthesis and Biological Evaluation of 2-Substituted-5-(4-nitrophenylsulfonamido)benzoxazoles as Human GST P1-1 Inhibitors, and Description of the Binding Site Features. ChemMedChem 2014; 9:984-92. [DOI: 10.1002/cmdc.201400010] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2014] [Indexed: 11/09/2022]
|
11
|
Bhagyasree JB, Samuel J, Varghese HT, Panicker CY, Arisoy M, Temiz-Arpaci O. Synthesis, FT-IR investigation and computational study of 5-[(4-Bromophenyl)acetamido]-2-(4-tert-butylphenyl) benzoxazole. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 115:79-91. [PMID: 23831982 DOI: 10.1016/j.saa.2013.06.028] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2013] [Revised: 06/01/2013] [Accepted: 06/05/2013] [Indexed: 06/02/2023]
Abstract
The synthesis and antimicrobial properties of 5-[(4-Bromophenyl)acetamido]-2-(4-tertbutylphenyl) benzoxazole are reported in the present work. The optimized molecular structure, (1)H NMR, vibrational frequencies, corresponding vibrational assignments of 5-[(4-Bromophenyl)acetamido]-2-(4-tert-butylphenyl) benzoxazole have been investigated experimentally and theoretically using Gaussian09 software package. Potential energy distribution of the normal modes of vibrations was done using GAR2PED program. The HOMO and LUMO analysis is used to determine the charge transfer within the molecule. The stability of the molecule arising from hyper-conjugative interaction and charge delocalization has been analyzed using NBO analysis. MEP was performed by the SDD method and the predicted infrared intensities have also been reported. The calculated geometrical parameters are in agreement with that of similar derivates. The first hyperpolarizability is high and the title compound is suitable for further NLO studies. Microbiological results indicated that the title compound possessed a broad spectrum activity against the tested Gram-positive, Gram-negative bacteria.
Collapse
Affiliation(s)
- J B Bhagyasree
- Deparatment of Chemistry, Mar Ivanios College, Nalanchira, Trivnadrum, Kerala, India
| | | | | | | | | | | |
Collapse
|
12
|
Kaplan-Ozen C, Tekiner-Gulbas B, Foto E, Yildiz I, Diril N, Aki E, Yalcin I. Benzothiazole derivatives as human DNA topoisomerase IIα inhibitors. Med Chem Res 2013. [DOI: 10.1007/s00044-013-0577-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
13
|
Bhagyasree JB, Varghese HT, Panicker CY, Samuel J, Van Alsenoy C, Bolelli K, Yildiz I, Aki E. Vibrational spectroscopic (FT-IR, FT-Raman, ¹H NMR and UV) investigations and computational study of 5-nitro-2-(4-nitrobenzyl) benzoxazole. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 102:99-113. [PMID: 23220524 DOI: 10.1016/j.saa.2012.09.032] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2012] [Revised: 08/30/2012] [Accepted: 09/09/2012] [Indexed: 06/01/2023]
Abstract
The optimized molecular structure, vibrational frequencies, corresponding vibrational assignments of 5-nitro-2-(4-nitrobenzyl) benzoxazole have been investigated experimentally and theoretically using Gaussian09 software package. Potential energy distribution of the normal modes of vibrations was done using GAR2PED program. The energy and oscillator strength calculated by time dependent density functional theory almost compliments with experimental findings. Gauge-including atomic orbital (1)H NMR chemical shifts calculations were carried out by using B3LYP functional with 6-31G basis set. The HOMO and LUMO analysis is used to determine the charge transfer within the molecule. The stability of the molecule arising from hyper-conjugative interaction and charge delocalization have been analyzed using NBO analysis. MEP was performed by the DFT method and the predicted infrared intensities and Raman activities have also been reported. The calculated geometrical parameters are in agreement with that of similar derivatives.
Collapse
Affiliation(s)
- J B Bhagyasree
- Department of Chemistry, Mar Ivanios College, Nalanchira, Trivandrum, Kerala, India
| | | | | | | | | | | | | | | |
Collapse
|
14
|
Taskin T, Yilmaz S, Yildiz I, Yalcin I, Aki E. Insight into eukaryotic topoisomerase II-inhibiting fused heterocyclic compounds in human cancer cell lines by molecular docking. SAR AND QSAR IN ENVIRONMENTAL RESEARCH 2012; 23:345-355. [PMID: 22490049 DOI: 10.1080/1062936x.2012.664560] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Etoposide is effective as an anti-tumour drug by inhibiting eukaryotic DNA topoisomerase II via establishing a covalent complex with DNA. Unfortunately, its wide therapeutic application is often hindered by multidrug resistance (MDR), low water solubility and toxicity. In our previous study, new derivatives of benzoxazoles, benzimidazoles and related fused heterocyclic compounds, which exhibited significant eukaryotic DNA topoisomerase II inhibitory activity, were synthesized and exhibited better inhibitory activity compared with the drug etoposide itself. To expose the binding interactions between the eukaryotic topoisomerase II and the active heterocyclic compounds, docking studies were performed, using the software Discovery Studio 2.1, based on the crystal structure of the Topo IIA-bound G-segment DNA (PDB ID: 2RGR). The research was conducted on a selected set of 31 fused heterocyclic compounds with variation in structure and activity. The structural analyses indicate coordinate and hydrogen bonding interactions, van der Waals interactions and hydrophobic interactions between ligands and the protein, as Topo IIA-bound G-segment DNA are responsible for the preference of inhibition and potency. Collectively, the results demonstrate that the compounds 1a, 1c, 3b, 3c, 3e and 4a are significant anti-tumour drug candidates that should be further studied.
Collapse
Affiliation(s)
- T Taskin
- Department of Chemistry, Gaziantep University, Şehitkamil/Gaziantep, Turkey
| | | | | | | | | |
Collapse
|
15
|
Bolelli K, Yalcin I, Ertan-Bolelli T, Özgen S, Kaynak-Onurdag F, Yildiz I, Aki E. Synthesis of novel 2-[4-(4-substitutedbenzamido/phenylacetamido)phenyl]benzothiazoles as antimicrobial agents. Med Chem Res 2011. [DOI: 10.1007/s00044-011-9918-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
|
16
|
Baviskar AT, Madaan C, Preet R, Mohapatra P, Jain V, Agarwal A, Guchhait SK, Kundu CN, Banerjee UC, Bharatam PV. N-fused imidazoles as novel anticancer agents that inhibit catalytic activity of topoisomerase IIα and induce apoptosis in G1/S phase. J Med Chem 2011; 54:5013-30. [PMID: 21644529 DOI: 10.1021/jm200235u] [Citation(s) in RCA: 213] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
On the basis of structures of known topoisomerase II catalytic inhibitors and initial molecular docking studies, bicyclic N-fused aminoimidazoles were predicted as potential topoisomerase II inhibitors. They were synthesized by multicomponent reactions and evaluated against human topoisomerase IIα (hTopoIIα) in decatenation, relaxation, cleavage complex, and DNA intercalation in vitro assays. Among 31 compounds of eight different bicyclic scaffolds, it was found that imidazopyridine, imidazopyrazole, and imidazopyrazine with suitable substituents exhibited potent inhibition of catalytic activity of hTopoIIα while not showing DNA intercalation. Molecular docking studies and molecular dynamics (MD) simulation analysis, ATPase-kinetics and ATP-dependent plasmid relaxation assay revealed the catalytic mode of inhibition of the title compounds plausibly by blocking the ATP-binding site. N-Fused aminoimidazoles showed potent anticancer activities in kidney and breast cancer cell lines, low toxicity to normal cells, relatively higher potency compared to etoposide and 5-fluorouracil in kidney cancer cell lines, and potent inhibition in cell migration. These compounds were found to exert apoptotic effect in G1/S phase.
Collapse
Affiliation(s)
- Ashish T Baviskar
- National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, SAS Nagar (Mohali), Punjab-160062, India
| | | | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Adibi H, Rashidi A, Khodaei MM, Alizadeh A, Majnooni MB, Pakravan N, Abiri R, Nematollahi D. Catecholthioether Derivatives: Preliminary Study of in-Vitro Antimicrobial and Antioxidant Activities. Chem Pharm Bull (Tokyo) 2011; 59:1149-52. [DOI: 10.1248/cpb.59.1149] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Hadi Adibi
- Department of Medicinal Chemistry, Faculty of Pharmacy, Kermanshah University of Medical Sciences
| | - Atefeh Rashidi
- Students Research Committee, Kermanshah University of Medical Sciences
| | - Mohammad Mehdi Khodaei
- Chemistry Department, Faculty of Chemistry and Nanoscience and Nanotechnology Research Center (NNRC), Razi University
| | - Abdolhamid Alizadeh
- Chemistry Department, Faculty of Chemistry and Nanoscience and Nanotechnology Research Center (NNRC), Razi University
| | - Mohammad Bagher Majnooni
- Department of Medicinal Chemistry, Faculty of Pharmacy, Kermanshah University of Medical Sciences
| | - Narges Pakravan
- Chemistry Department, Faculty of Chemistry and Nanoscience and Nanotechnology Research Center (NNRC), Razi University
| | - Ramin Abiri
- Department of Microbiology, Faculty of Medicine, Kermanshah University of Medical Sciences
| | | |
Collapse
|
18
|
Ma Y, Wang JG, Wang B, Li ZM. Integrating molecular docking, DFT and CoMFA/CoMSIA approaches for a series of naphthoquinone fused cyclic α-aminophosphonates that act as novel topoisomerase II inhibitors. J Mol Model 2010; 17:1899-909. [PMID: 21107989 DOI: 10.1007/s00894-010-0898-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2010] [Accepted: 11/08/2010] [Indexed: 11/29/2022]
Abstract
Since they are potential topoisomerase II (Topo II) inhibitors, naphthoquinone fused cyclic α-aminophosphonates display anticancer activity. In order to explore the inhibitory mechanisms of these compounds, they were docked into the active site of Topo II structure, which allowed their probable binding modes to be predicted. Some meaningful results concerning their structure-activity relationships were obtained from density functional theory calculations. Models based on quantitative comparative molecular field analysis and comparative molecular similarity index analysis were derived for the steric, electrostatic, hydrophobic and H-bonding features of the compounds. The present study provides valuable results that enhance our understanding of the anticancer activities of these inhibitors and will aid the rational drug design of novel Topo II inhibitors in the future.
Collapse
Affiliation(s)
- Yi Ma
- State-key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | | | | | | |
Collapse
|
19
|
Ertan T, Yildiz I, Tekiner-Gulbas B, Bolelli K, Temiz-Arpaci O, Ozkan S, Kaynak F, Yalcin I, Aki E. Synthesis, biological evaluation and 2D-QSAR analysis of benzoxazoles as antimicrobial agents. Eur J Med Chem 2009; 44:501-10. [DOI: 10.1016/j.ejmech.2008.04.001] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2007] [Revised: 03/28/2008] [Accepted: 04/08/2008] [Indexed: 11/16/2022]
|
20
|
Oksuzoglu E, Tekiner-Gulbas B, Alper S, Temiz-Arpaci O, Ertan T, Yildiz I, Diril N, Sener-Aki E, Yalcin I. Some benzoxazoles and benzimidazoles as DNA topoisomerase I and II inhibitors. J Enzyme Inhib Med Chem 2008; 23:37-42. [DOI: 10.1080/14756360701342516] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Affiliation(s)
- Emine Oksuzoglu
- Molecular Biology Department, Faculty of Science, Hacettepe University, Beytepe, 06532, Ankara, Turkey
| | - Betul Tekiner-Gulbas
- Pharmaceutical Chemistry Dept Faculty of Pharmacy, Ankara University, Tandogan, 06100, Ankara, Turkey
| | - Sabiha Alper
- Pharmaceutical Chemistry Dept Faculty of Pharmacy, Ankara University, Tandogan, 06100, Ankara, Turkey
| | - Ozlem Temiz-Arpaci
- Pharmaceutical Chemistry Dept Faculty of Pharmacy, Ankara University, Tandogan, 06100, Ankara, Turkey
| | - Tugba Ertan
- Pharmaceutical Chemistry Dept Faculty of Pharmacy, Ankara University, Tandogan, 06100, Ankara, Turkey
| | - Ilkay Yildiz
- Pharmaceutical Chemistry Dept Faculty of Pharmacy, Ankara University, Tandogan, 06100, Ankara, Turkey
| | - Nuran Diril
- Molecular Biology Department, Faculty of Science, Hacettepe University, Beytepe, 06532, Ankara, Turkey
| | - Esin Sener-Aki
- Pharmaceutical Chemistry Dept Faculty of Pharmacy, Ankara University, Tandogan, 06100, Ankara, Turkey
| | - Ismail Yalcin
- Pharmaceutical Chemistry Dept Faculty of Pharmacy, Ankara University, Tandogan, 06100, Ankara, Turkey
| |
Collapse
|
21
|
Tekiner-Gulbas B, Temiz-Arpaci O, Oksuzoglu E, Eroglu H, Yildiz I, Diril N, Aki-Sener E, Yalcin I. QSAR of genotoxic active benzazoles. SAR AND QSAR IN ENVIRONMENTAL RESEARCH 2007; 18:251-63. [PMID: 17514569 DOI: 10.1080/10629360701303966] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Previously synthesized 2,5-disubstituted benzoxazole and benzimidazole derivatives, were tested for their genotoxic activity in the Bacillus subtilis rec- assay. The results revealed that 5-methyl-2-(p-aminobenzyl)benzoxazole exhibited the highest genotoxic response, which was comparable to 4-nitroquinoline 1-oxide (4-NQO), the reference agent of classical positive mutagen. Among the other tested compounds, four showed a genotoxic activity. A QSAR study revealed that structural parameters IY(C(2)H(4)) and IY(CH(2)O), indicating the bridge elements between the phenyl moiety and the fused ring system at position 2 and the quantum chemical parameter (DeltaE ), showing the difference between HOMO and LUMO energies, were found significant for enhancing the genotoxic activity in these compounds. In addition, the substituent effects on positions R and R(1) were found important for the activity as well as holding a substituent possessing a maximum length with a minimum width property on position R(1) like alkyl groups. On the other hand, substituting position R with an electron donating group instead of electron withdrawing group increased the genotoxic activity.
Collapse
Affiliation(s)
- B Tekiner-Gulbas
- Faculty of Pharmacy, Pharmaceutical Chemistry Department, Ankara University, Ankara, Turkey
| | | | | | | | | | | | | | | |
Collapse
|