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Nandikolla A, Srinivasarao S, Karan Kumar B, Murugesan S, Aggarwal H, Balaña-Fouce R, Melcón-Fernandez E, Pérez-Pertejo Y, Chandra Sekhar KVG. Novel phenanthridine amide analogs as potential anti-leishmanial agents: In vitro and in silico insights. Bioorg Chem 2021; 117:105414. [PMID: 34655843 DOI: 10.1016/j.bioorg.2021.105414] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [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: 06/24/2021] [Revised: 08/25/2021] [Accepted: 10/06/2021] [Indexed: 10/20/2022]
Abstract
In the current work, sixteen novel amide derivatives of phenanthridine were designed and synthesized using 9-fluorenone, 4-Methoxy benzyl amine, and alkyl/aryl acids. The characterization of the title compounds was performed using LCMS, elemental analysis, 1HNMR, 13CNMR and single crystal XRD pattern was also developed for compounds A8. All the final analogs were screened in vitro for anti-leishmanial activity against promastigote form of L. infantum strain. Among the tested analogs, four compounds (A-06, A-11, A-12, and A-15) exhibited significant anti-leishmanial activity with EC50 value ranges from 8.9 to 21.96 μM against amastigote forms of tested L. infantum strain with SI ranges of 1.0 to 4.3. From the activity results it was found that A-11 was the most active compound in both promastigote and amastigotes forms with EC50 values 8.53 and 8.90 µM respectively. In-silico ADME prediction studies depicted that the titled compounds obeyed Lipinski's rule of five as that of the approved marketed drugs. The predicted in-silico toxicity profile also confirmed that the tested compounds were non-toxic. Finally, molecular docking and molecular dynamics study was also performed for significantly active compound (A-11) in order to study it's putative binding pattern at the active site of the selected leishmanial trypanothione reductase target as well as to understand the stability pattern of target-ligand complex for 100 ns. Single crystal XRD of compound A-08 revealed that the compound crystallizes in monoclinic C2/c space group and showed interesting packing arrangements.
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Affiliation(s)
- Adinarayana Nandikolla
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Hyderabad 500078, Telangana, India
| | - Singireddi Srinivasarao
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Hyderabad 500078, Telangana, India
| | - Banoth Karan Kumar
- Medicinal Chemistry Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science Pilani, Pilani Campus, Pilani 333031, Rajasthan. India
| | - Sankaranarayanan Murugesan
- Medicinal Chemistry Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science Pilani, Pilani Campus, Pilani 333031, Rajasthan. India
| | - Himanshu Aggarwal
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Hyderabad 500078, Telangana, India
| | | | | | | | - Kondapalli Venkata Gowri Chandra Sekhar
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Hyderabad 500078, Telangana, India.
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Nandikolla A, Srinivasarao S, Khetmalis YM, Kumar BK, Murugesan S, Shetye G, Ma R, Franzblau SG, Sekhar KVGC. Design, synthesis and biological evaluation of novel 1,2,3-triazole analogues of Imidazo-[1,2-a]-pyridine-3-carboxamide against Mycobacterium tuberculosis. Toxicol In Vitro 2021; 74:105137. [PMID: 33684466 DOI: 10.1016/j.tiv.2021.105137] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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: 10/28/2020] [Revised: 01/28/2021] [Accepted: 03/04/2021] [Indexed: 10/22/2022]
Abstract
Twenty-eight novel 1,2,3-triazole analogues of imidazo-[1,2-a]-pyridine-3-carboxamide were designed and synthesized based on hybridization approach. The structure of the final compounds are characterized using 1HNMR, 13CNMR, LCMS and elemental analyses and are screened in vitro for anti-tubercular activity using low-oxygen recovery assay (LORA) non-replicating and using microplate alamar blue assay (MABA) against replicating M. tuberculosis. MIC was determined. From the obtained results, it was observed that, among (2,7-dimethylimidazo[1,2-a]pyridin-3-yl)(4-((1-subtituted phenyl-1H-1,2,3-triazol-4-yl)methyl)piperazin-1-yl)methanones and (6-chloro-2-methylimidazo[1,2-a]pyridin-3-yl)(4-((1-substituted phenyl-1H-1,2,3-triazol-4-yl)methyl)piperazin-1-yl)methanones, compounds with substitution at para position with electron electron releasing groups exhibited the best activity (< 34 μg/mL). Amidst, (2,7-dimethylimidazo[1,2-a]pyridin-3-yl)(4-(2-(4-alkyl/substituted aryl-1H-1,2,3-triazol-1-yl)ethyl)piperazin-1-yl)methanones and (6-chloro-2-methylimidazo[1,2-a]pyridin-3-yl)(4-(2-(4- alkyl/substituted aryl -1H-1,2,3-triazol-1-yl)ethyl)piperazin-1-yl)methanones, compounds with long alkyl chain or cyclo propyl group were most active (< 21 μg/mL) in MABA method against the tested strain of MTB. Compound 10b emerged to be the most active compound in MABA and LORA with MIC values 13.74 and 24.63 μg/mL respectively. In-silico ADMET parameters were also predicted for the significantly active compound. Finally, molecular docking study was carried out to predict the feasible binding pattern of the most active compound at the active site of enoyl acyl carrier protein reductase from Mycobacterium tuberculosis (PDB-4TZK) using Glide module of Schrodinger software.
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Affiliation(s)
- Adinarayana Nandikolla
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Hyderabad 500078, Telangana, India
| | - Singireddi Srinivasarao
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Hyderabad 500078, Telangana, India
| | - Yogesh Mahadu Khetmalis
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Hyderabad 500078, Telangana, India
| | - Banoth Karan Kumar
- Medicinal Chemistry Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science Pilani, Pilani Campus, Pilani 333031, Rajasthan. India
| | - Sankaranarayanan Murugesan
- Medicinal Chemistry Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science Pilani, Pilani Campus, Pilani 333031, Rajasthan. India
| | - Gauri Shetye
- Institute for Tuberculosis Research, College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, IL 60612. USA
| | - Rui Ma
- Institute for Tuberculosis Research, College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, IL 60612. USA
| | - Scott G Franzblau
- Institute for Tuberculosis Research, College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, IL 60612. USA
| | - Kondapalli Venkata Gowri Chandra Sekhar
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Hyderabad 500078, Telangana, India.
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Suresh A, Srinivasarao S, Khetmalis YM, Nizalapur S, Sankaranarayanan M, Gowri Chandra Sekhar KV. Inhibitors of pantothenate synthetase of Mycobacterium tuberculosis - a medicinal chemist perspective. RSC Adv 2020; 10:37098-37115. [PMID: 35521286 PMCID: PMC9057165 DOI: 10.1039/d0ra07398a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 09/30/2020] [Indexed: 01/27/2023] Open
Abstract
Tuberculosis (TB), one of the most prevalent infections, is on the rise today. Although there are drugs available in the market to combat this lethal disorder, there are several shortcomings with the current drug regimen, such as prolonged treatment period, drug resistance, high cost, etc. Hence, it is inevitable for the current researchers across the globe to embark on new strategies for TB drug discovery, which will yield highly active low cost drugs with a shorter treatment period. To achieve this, novel strategies need to be adopted to discover new drugs. Pantothenate Synthetase (PS) is one such striking drug target in Mycobacterium tuberculosis (MTB). It was observed that the pantothenate biosynthetic pathway is crucial for the pathogenicity of MTB. Pantothenate is absent in mammals and needs to be obtained from dietary sources. Hence, the pantothenate biosynthesis pathway is an impending target for emerging new therapeutics to treat TB. Worldwide, several approaches have been implemented by researchers in the quest for these inhibitors such as high-throughput screening, simulating the reaction intermediate pantoyl adenylate, use of vibrant combinatorial chemistry, hybridization approach, virtual screening of databases, inhibitors based on the crystal structure of MTB PS, etc. The present review recapitulates current developments in PS inhibitors, important analogues of numerous metabolic intermediates, and newly established inhibitors with innumerable chemical structures.
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Affiliation(s)
- Amaroju Suresh
- Department of Chemistry, Birla Institute of Technology & Science-Pilani Hyderabad Campus, Medchal District Hyderabad-500078 Telangana India +91 40 66303527
| | - Singireddi Srinivasarao
- Department of Chemistry, Birla Institute of Technology & Science-Pilani Hyderabad Campus, Medchal District Hyderabad-500078 Telangana India +91 40 66303527
| | - Yogesh Mahadu Khetmalis
- Department of Chemistry, Birla Institute of Technology & Science-Pilani Hyderabad Campus, Medchal District Hyderabad-500078 Telangana India +91 40 66303527
| | | | - Murugesan Sankaranarayanan
- Medicinal Chemistry Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science-Pilani Pilani Campus Pilani 333031 Rajasthan India
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Srinivasarao S, Nandikolla A, Suresh A, Ewa AK, Głogowska A, Ghosh B, Kumar BK, Murugesan S, Pulya S, Aggarwal H, Sekhar KVGC. Discovery of 1,2,3-triazole based quinoxaline-1,4-di-N-oxide derivatives as potential anti-tubercular agents. Bioorg Chem 2020; 100:103955. [PMID: 32464405 DOI: 10.1016/j.bioorg.2020.103955] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [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: 12/30/2019] [Revised: 02/12/2020] [Accepted: 05/17/2020] [Indexed: 02/05/2023]
Abstract
A series of thirty one novel 2-(((1-(substituted phenyl)-1H-1,2,3-triazol-4-yl)methoxy)carbonyl)-3-methylquinoxaline-1,4-dioxide (7a-l), 3-(((1-(substituted phenyl)-1H-1,2,3-triazol-4-yl)methoxy)carbonyl)-6-chloro-2-methylquinoxaline-1,4-dioxide (8a-l) and 2-(((1-(substituted phenyl)-1H-1,2,3-triazol-4-yl)methoxy)carbonyl)-6,7-dichloro-3-methylquinoxaline-1,4-dioxide (9a-g) analogues were synthesized, characterized using various analytical techniques and single crystal was developed for the compounds 8 g and 9f. Synthesized compounds were evaluated for in vitro anti-tubercular activity against Mycobacterium tuberculosis H37Rv strain and two clinical isolates Spec. 210 and Spec. 192. The titled compounds exhibited minimum inhibitory concentration (MIC) ranging from 30.35 to 252.00 µM. Among the tested compounds, 8e, 8 l, 9c and 9d exhibited moderate activity (MIC = 47.6 - 52.0 µM) and 8a exhibited significant anti-tubercular activity (MIC = 30.35 µM). Furthermore, 8e, 8 l, and 9d were found to be less toxic against human embryonic kidney, HEK 293 cell lines. Finally, a docking study was also performed using MTB DNA Gyrase (PDB ID: 5BS8) for the significantly active compound 8a to know the exact binding pattern within the active site of the target enzyme.
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Affiliation(s)
- Singireddi Srinivasarao
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Hyderabad 500 078, Telangana, India
| | - Adinarayana Nandikolla
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Hyderabad 500 078, Telangana, India
| | - Amaroju Suresh
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Hyderabad 500 078, Telangana, India
| | - Augustynowicz-Kopec Ewa
- Microbiology Department, National Tuberculosis and Lung Diseases Research Institute, 01-138 Warsaw, Poland
| | - Agnieszka Głogowska
- Microbiology Department, National Tuberculosis and Lung Diseases Research Institute, 01-138 Warsaw, Poland
| | - Balaram Ghosh
- Department of Pharmacy, Birla Institute of Technology and Science, Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Hyderabad 500 078, Telangana, India
| | - Banoth Karan Kumar
- Medicinal Chemistry Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science, Pilani 333 031, Rajasthan, India
| | - Sankaranarayanan Murugesan
- Medicinal Chemistry Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science, Pilani 333 031, Rajasthan, India
| | - Sravani Pulya
- Department of Pharmacy, Birla Institute of Technology and Science, Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Hyderabad 500 078, Telangana, India
| | - Himanshu Aggarwal
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Hyderabad 500 078, Telangana, India
| | - Kondapalli Venkata Gowri Chandra Sekhar
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Hyderabad 500 078, Telangana, India.
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5
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Srinivasarao S, Nandikolla A, Suresh A, Calster KV, De Voogt L, Cappoen D, Ghosh B, Aggarwal H, Murugesan S, Chandra Sekhar KVG. Seeking potent anti-tubercular agents: design and synthesis of substituted- N-(6-(4-(pyrazine-2-carbonyl)piperazine/homopiperazine-1-yl)pyridin-3-yl)benzamide derivatives as anti-tubercular agents. RSC Adv 2020; 10:12272-12288. [PMID: 35497605 PMCID: PMC9050811 DOI: 10.1039/d0ra01348j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 05/19/2020] [Accepted: 03/18/2020] [Indexed: 11/21/2022] Open
Abstract
We herein report 27 pyrazinamide analogues as anti-tubercular agents, of which six exhibited excellent activity with IC50 ≤ 2.18 μM and these were less toxic against HEK 293 cells.
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Affiliation(s)
- Singireddi Srinivasarao
- Department of Chemistry
- Birla Institute of Technology and Science, Pilani
- Hyderabad-500078
- India
| | - Adinarayana Nandikolla
- Department of Chemistry
- Birla Institute of Technology and Science, Pilani
- Hyderabad-500078
- India
| | - Amaroju Suresh
- Department of Chemistry
- Birla Institute of Technology and Science, Pilani
- Hyderabad-500078
- India
| | - Kevin Van Calster
- Department of Green Chemistry and Technology
- Faculty of Bioscience Engineering
- Ghent University
- Ghent
- Belgium
| | - Linda De Voogt
- Department of Green Chemistry and Technology
- Faculty of Bioscience Engineering
- Ghent University
- Ghent
- Belgium
| | - Davie Cappoen
- Department of Green Chemistry and Technology
- Faculty of Bioscience Engineering
- Ghent University
- Ghent
- Belgium
| | - Balaram Ghosh
- Department of Pharmacy
- Birla Institute of Technology and Science, Pilani
- Hyderabad-500078
- India
| | - Himanshu Aggarwal
- Department of Chemistry
- Birla Institute of Technology and Science, Pilani
- Hyderabad-500078
- India
| | - Sankaranarayanan Murugesan
- Medicinal Chemistry Research Laboratory
- Department of Pharmacy
- Birla Institute of Technology and Science, Pilani
- India
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Nandikolla A, Srinivasarao S, Karan Kumar B, Murugesan S, Aggarwal H, Major LL, Smith TK, Chandra Sekhar KVG. Synthesis, study of antileishmanial and antitrypanosomal activity of imidazo pyridine fused triazole analogues. RSC Adv 2020; 10:38328-38343. [PMID: 35517538 PMCID: PMC9057266 DOI: 10.1039/d0ra07881f] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 10/13/2020] [Indexed: 11/21/2022] Open
Abstract
Thirty-five novel 1,2,3-triazole analogues of imidazo-[1,2-a]-pyridine-3-carboxamides were designed, synthesized and evaluated for in vitro antileishmanial and antitrypanosomal activity against L. major and T. brucei parasites, respectively.
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Affiliation(s)
- Adinarayana Nandikolla
- Department of Chemistry
- Birla Institute of Technology and Science, Pilani
- Hyderabad Campus
- Hyderabad – 500078
- India
| | - Singireddi Srinivasarao
- Department of Chemistry
- Birla Institute of Technology and Science, Pilani
- Hyderabad Campus
- Hyderabad – 500078
- India
| | - Banoth Karan Kumar
- Medicinal Chemistry Research Laboratory
- Department of Pharmacy
- Birla Institute of Technology and Science Pilani
- Pilani Campus
- Pilani-333031
| | - Sankaranarayanan Murugesan
- Medicinal Chemistry Research Laboratory
- Department of Pharmacy
- Birla Institute of Technology and Science Pilani
- Pilani Campus
- Pilani-333031
| | - Himanshu Aggarwal
- Department of Chemistry
- Birla Institute of Technology and Science, Pilani
- Hyderabad Campus
- Hyderabad – 500078
- India
| | - Louise L. Major
- Schools of Biology & Chemistry
- BSRC
- The University, St. Andrews
- Fife
- UK
| | - Terry K. Smith
- Schools of Biology & Chemistry
- BSRC
- The University, St. Andrews
- Fife
- UK
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Srinivasarao S, Nandikolla A, Suresh A, Van Calster K, De Vooght L, Cappoen D, Ghosh B, Aggarwal H, Murugesan S, Gowri Chandra Sekhar KV. Correction: Seeking potent anti-tubercular agents: design and synthesis of substituted- N-(6-(4-(pyrazine-2-carbonyl)piperazine/homopiperazine-1-yl)pyridin-3-yl)benzamide derivatives as anti-tubercular agents. RSC Adv 2020; 10:18907. [PMID: 35518313 PMCID: PMC9053943 DOI: 10.1039/d0ra90059a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 05/06/2020] [Indexed: 11/21/2022] Open
Abstract
Correction for ‘Seeking potent anti-tubercular agents: design and synthesis of substituted-N-(6-(4-(pyrazine-2-carbonyl)piperazine/homopiperazine-1-yl)pyridin-3-yl)benzamide derivatives as anti-tubercular agents’ by Singireddi Srinivasarao et al., RSC Adv., 2020, 10, 12272–12288, DOI: 10.1039/D0RA01348J.
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Affiliation(s)
- Singireddi Srinivasarao
- Department of Chemistry
- Birla Institute of Technology and Science, Pilani
- Hyderabad-500078
- India
| | - Adinarayana Nandikolla
- Department of Chemistry
- Birla Institute of Technology and Science, Pilani
- Hyderabad-500078
- India
| | - Amaroju Suresh
- Department of Chemistry
- Birla Institute of Technology and Science, Pilani
- Hyderabad-500078
- India
| | - Kevin Van Calster
- Department of Green Chemistry and Technology
- Faculty of Bioscience Engineering
- Ghent University
- Ghent
- Belgium
| | - Linda De Vooght
- Department of Green Chemistry and Technology
- Faculty of Bioscience Engineering
- Ghent University
- Ghent
- Belgium
| | - Davie Cappoen
- Department of Green Chemistry and Technology
- Faculty of Bioscience Engineering
- Ghent University
- Ghent
- Belgium
| | - Balaram Ghosh
- Department of Pharmacy
- Birla Institute of Technology and Science, Pilani
- Hyderabad Campus
- Hyderabad-500078
- India
| | - Himanshu Aggarwal
- Department of Chemistry
- Birla Institute of Technology and Science, Pilani
- Hyderabad-500078
- India
| | - Sankaranarayanan Murugesan
- Medicinal Chemistry Research Laboratory
- Department of Pharmacy
- Birla Institute of Technology and Science, Pilani
- India
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Srinivasarao S, Nandikolla A, Nizalapur S, Yu TT, Pulya S, Ghosh B, Murugesan S, Kumar N, Chandra Sekhar KVG. Design, synthesis and biological evaluation of 1,2,3-triazole based 2-aminobenzimidazoles as novel inhibitors of LasR dependent quorum sensing in Pseudomonas aeruginosa. RSC Adv 2019; 9:29273-29292. [PMID: 35528444 PMCID: PMC9071802 DOI: 10.1039/c9ra05059k] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 09/06/2019] [Indexed: 11/26/2022] Open
Abstract
Bacteria regulate their phenotype, growth and population via a signalling pathway known as quorum sensing. In this process, bacteria produce signalling molecules (autoinducers) to recognize their population density. Inhibiting this quorum sensing signalling pathway is one of the potential methods to treat bacterial infection. 2-Aminobenimdazoles are reported to be the strongest inhibitors of quorum sensing against wild-type P. aeruginosa. 1,2,3-Triazole based acyl homoserine lactones are found to be good inhibitors of the quorum sensing LasR receptor. Hence, in our current study, forty 1,2,3-triazole based 2-aminobenzimdazoles were synthesized and characterized using IR, NMR, MS and elemental analysis. A single crystal was developed for N-(1H-benzo[d]imidazol-2-yl)-2-(4-nonyl-1H-1,2,3-triazol-1-yl)acetamide (6d). All final compounds were screened for in vitro quorum sensing inhibitory activity against Pseudomonas aeruginosa. The quorum sensing inhibitory activity was determined in the LasR expressing P. aeruginosa MH602 reporter strain by measuring green fluorescent protein production. Among the title compounds, N-(1H-benzo[d]imidazol-2-yl)-2-(4-(4-chlorophenyl)-1H-1,2,3-triazol-1-yl)acetamide (6i) exhibited good quorum sensing inhibitory activity of 64.99% at 250 μM. N-(1H-Benzo[d]imidazol-2-yl)-2-(4-(4-nitrophenyl)-1H-1,2,3-triazol-1-yl)acetamide (6p) exhibited the most promising quorum sensing inhibitory activity with 68.23, 67.10 and 63.67% inhibition at 250, 125 and 62.5 μM, respectively. N-(1H-Benzo[d]imidazol-2-yl)-2-(4-(4-(trifluoromethyl)phenyl)-1H-1,2,3-triazol-1-yl)acetamide (6o) and N-(5,6-dimethyl-1H-benzo[d]imidazol-2-yl)-2-(4-(4-(trifluoromethyl)phenyl)-1H-1,2,3-triazol-1-yl)acetamide (7l) also exhibited 64.25% and 65.80% quorum sensing inhibition at 250 μM. Compound 6p, the most active quorum sensing inhibitor, also displayed low cytotoxicity at the tested concentrations (25, 50 and 100 μM) against normal human embryonic kidney cell lines. Finally, a docking study using Schrodinger Glide elucidated the possible putative binding mode of the significantly active compound 6p at the active site of the target LasR receptor (PDB ID: 2UV0). Out of 40 benzimdazoles, 12 exhibited potent QSI activity against P. aeruginosa6p, most active QSI is docked to LasR and is less toxic against HEK 293 cell line.![]()
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Affiliation(s)
| | | | | | | | - Sravani Pulya
- Department of Pharmacy
- Birla Institute of Technology and Science
- Hyderabad-500078
- India
| | - Balaram Ghosh
- Department of Pharmacy
- Birla Institute of Technology and Science
- Hyderabad-500078
- India
| | - Sankaranarayanan Murugesan
- Medicinal Chemistry Research Laboratory
- Department of Pharmacy
- Birla Institute of Technology and Science
- Pilani
- India
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Srinivasarao S, Nizalapur S, Yu TT, Wenholz DS, Trivedi P, Ghosh B, Rangan K, Kumar N, Gowri Chandra Sekhar K. Design, Synthesis and Biological Evaluation of Triazole-Containing 2-Phenylindole and Salicylic Acid as Quorum Sensing Inhibitors Against Pseudomonas aeruginosa. ChemistrySelect 2018. [DOI: 10.1002/slct.201801622] [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: 01/22/2023]
Affiliation(s)
- Singireddi Srinivasarao
- Department of Chemistry; Birla Institute of Technology and Science, Pilani; Hyderabad Campus, Jawahar Nagar, Kapra Mandal; Hyderabad - 500078, Telangana India
| | | | - Tsz Tin Yu
- School of Chemistry; UNSW Sydney; NSW 2052, Australia
| | | | - Prakruti Trivedi
- Department of Pharmacy; Birla Institute of Technology and Science-Pilani; Hyderabad Campus, Jawahar Nagar, Kapra Mandal; Hyderabad-500 078, Telangana India
| | - Balaram Ghosh
- Department of Pharmacy; Birla Institute of Technology and Science-Pilani; Hyderabad Campus, Jawahar Nagar, Kapra Mandal; Hyderabad-500 078, Telangana India
| | - Krishnan Rangan
- Department of Chemistry; Birla Institute of Technology and Science, Pilani; Hyderabad Campus, Jawahar Nagar, Kapra Mandal; Hyderabad - 500078, Telangana India
| | - Naresh Kumar
- School of Chemistry; UNSW Sydney; NSW 2052, Australia
| | - Kondapalli Venkata Gowri Chandra Sekhar
- Department of Chemistry; Birla Institute of Technology and Science, Pilani; Hyderabad Campus, Jawahar Nagar, Kapra Mandal; Hyderabad - 500078, Telangana India
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Suresh A, Srinivasarao S, Agnieszka N, Ewa AK, Alvala M, Lherbet C, Chandra Sekhar KVG. Design and synthesis of 9H-fluorenone based 1,2,3-triazole analogues asMycobacterium tuberculosisInhA inhibitors. Chem Biol Drug Des 2018; 91:1078-1086. [DOI: 10.1111/cbdd.13127] [Citation(s) in RCA: 11] [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: 06/14/2017] [Revised: 08/17/2017] [Accepted: 08/24/2017] [Indexed: 11/28/2022]
Affiliation(s)
- Amaroju Suresh
- Department of Chemistry; Birla Institute of Technology and Science; Hyderabad Telangana India
| | - Singireddi Srinivasarao
- Department of Chemistry; Birla Institute of Technology and Science; Hyderabad Telangana India
| | - Napiórkowska Agnieszka
- Microbiology Department; National Tuberculosis and Lung Diseases Research Institute; Warsaw Poland
| | - Augustynowicz-Kopeć Ewa
- Microbiology Department; National Tuberculosis and Lung Diseases Research Institute; Warsaw Poland
| | - Mallika Alvala
- National Institute of Pharmaceutical Education and Research-Hyderabad; Hyderabad Telangana India
| | - Christian Lherbet
- Laboratoire SPCMIB (UMR CNRS 5068); Université Paul Sabatier; Université de Toulouse; Toulouse Cedex France
- ITAV-USR3505, CNRS, UPS; Université de Toulouse; Toulouse France
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11
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Amaroju S, Kalaga MN, Srinivasarao S, Napiórkowska A, Augustynowicz-Kopeć E, Murugesan S, Chander S, Krishnan R, Chandra Sekhar KVG. Identification and development of pyrazolo[4,3-c]pyridine carboxamides as Mycobacterium tuberculosis pantothenate synthetase inhibitors. NEW J CHEM 2017. [DOI: 10.1039/c6nj02671k] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
A novel series of pyrazolo[4,3-c]pyridine carboxamides were synthesized and characterized. The compounds were evaluated for their antitubercular activity and pantothenate synthetase enzyme inhibition study.
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Affiliation(s)
- Suresh Amaroju
- Department of Chemistry
- Birla Institute of Technology and Science-Pilani
- R. R. Dist. Hyderabad
- India
| | - Mahalakshmi Naidu Kalaga
- Department of Chemistry
- Birla Institute of Technology and Science-Pilani
- R. R. Dist. Hyderabad
- India
| | - Singireddi Srinivasarao
- Department of Chemistry
- Birla Institute of Technology and Science-Pilani
- R. R. Dist. Hyderabad
- India
| | - Agnieszka Napiórkowska
- Microbiology Department
- National Tuberculosis and Lung Diseases Research Institute
- 01-138 Warsaw
- Poland
| | - Ewa Augustynowicz-Kopeć
- Microbiology Department
- National Tuberculosis and Lung Diseases Research Institute
- 01-138 Warsaw
- Poland
| | - Sankaranarayanan Murugesan
- Medicinal Chemistry Research Laboratory
- Department of Pharmacy
- Birla Institute of Technology & Science
- Pilani
- India
| | - Subhash Chander
- Medicinal Chemistry Research Laboratory
- Department of Pharmacy
- Birla Institute of Technology & Science
- Pilani
- India
| | - Rangan Krishnan
- Department of Chemistry
- Birla Institute of Technology and Science-Pilani
- R. R. Dist. Hyderabad
- India
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12
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Naidu KM, Srinivasarao S, Agnieszka N, Ewa AK, Kumar MMK, Chandra Sekhar KVG. Seeking potent anti-tubercular agents: Design, synthesis, anti-tubercular activity and docking study of various ((triazoles/indole)-piperazin-1-yl/1,4-diazepan-1-yl)benzo[d]isoxazole derivatives. Bioorg Med Chem Lett 2016; 26:2245-50. [PMID: 27020525 DOI: 10.1016/j.bmcl.2016.03.059] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [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: 10/08/2015] [Revised: 02/04/2016] [Accepted: 03/15/2016] [Indexed: 01/22/2023]
Abstract
A series of thirty eight novel 3-(4-((substituted-1H-1,2,3-triazol-4-yl)methyl)piperazin-1-yl/1,4-diazepan-1-yl)benzo[d]isoxazole and 1-(4-(benzo[d]isoxazol-3-yl)piperazin-1-yl/1,4-diazepan-1-yl)-2-(1H-indol-3-yl)substituted-1-one analogues were synthesised, characterised using various analytical techniques and evaluated for in vitro anti-tubercular activity against Mycobacterium tuberculosis H37Rv strain and two 'wild' strains Spec. 210 and Spec. 192. The titled compounds exhibited minimum inhibitory concentration (MIC) ranging from 6.16 to >200μM. Among the tested compounds, 7i, 7y and 7z exhibited moderate activity (MIC=24.03-29.19μM) and 7j exhibited very good anti-tubercular activity (MIC=6.16μM). Furthermore, 7i, 7j, 7y and 7z were found to be non-toxic against mouse macrophage cell lines when screened for toxicity. All the synthesised compounds were docked to pantothenate synthetase enzyme site to know deferent binding interactions with the receptor.
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Affiliation(s)
- Kalaga Mahalakshmi Naidu
- Department of Chemistry, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Jawahar Nagar, Shamirpet Mandal, Hyderabad 500 078, India
| | - Singireddi Srinivasarao
- Department of Chemistry, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Jawahar Nagar, Shamirpet Mandal, Hyderabad 500 078, India
| | - Napiórkowska Agnieszka
- Microbiology Department, National Tuberculosis and Lung Diseases Research Institute, 01-138 Warsaw, Poland
| | - Augustynowicz-Kopeć Ewa
- Microbiology Department, National Tuberculosis and Lung Diseases Research Institute, 01-138 Warsaw, Poland
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