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Sunke R, Kalyani A, Swamy KCK. Cu(I)-Catalyzed Ligand-Free Tandem One-Pot or Sequential Annulation via Knoevenagel Intermediates: An Entry into Multifunctional Naphthalenes, Phenanthrenes, Quinolines, and Benzo[ b]carbazoles. J Org Chem 2020; 85:1073-1086. [PMID: 31823603 DOI: 10.1021/acs.joc.9b02991] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A simple but efficient one-pot or sequential copper-catalyzed protocol using 2-bromoaldehydes and active methylene group containing substrates that affords multifunctional naphthalenes, phenanthrenes, quinolines, and benzo[b]carbazoles via Knoevenagel condensation, C-arylation, and decarboxylation, followed by aromatization, is developed. The reaction utilizes the potential of Knoevenagel intermediates and does not require any ancillary ligand. The phenanthrene products thus obtained show moderate fluorescence activity. Structural elaboration of the products to obtain dihydrobenzoquinazolines is also highlighted.
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Affiliation(s)
- Rajnikanth Sunke
- School of Chemistry , University of Hyderabad , Hyderabad 500046 , Telangana , India
| | - Adula Kalyani
- School of Chemistry , University of Hyderabad , Hyderabad 500046 , Telangana , India
| | - K C Kumara Swamy
- School of Chemistry , University of Hyderabad , Hyderabad 500046 , Telangana , India
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Yadav S, Lim SM, Ramasamy K, Vasudevan M, Shah SAA, Mathur A, Narasimhan B. Synthesis and evaluation of antimicrobial, antitubercular and anticancer activities of 2-(1-benzoyl-1H-benzo[d]imidazol-2-ylthio)-N-substituted acetamides. Chem Cent J 2018; 12:66. [PMID: 29804151 PMCID: PMC5971037 DOI: 10.1186/s13065-018-0432-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Accepted: 05/05/2018] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND The study describes the synthesis, characterization, in vitro antimicrobial and anticancer evaluation of a series of 2-(1-benzoyl-1H-benzo[d]imidazol-2-ylthio)-N-substituted acetamide derivatives. The synthesized derivatives were also assessed for in vitro antitubercular activity against Mycobacterium tuberculosis H37Rv. The compounds found active in in vitro study were assessed for their in vivo antitubercular activity in mice models and for their inhibitory action on vital mycobacterial enzymes viz, isocitrate lyase, pantothenate synthetase and chorismate mutase. RESULTS Compounds 8, 9 and 11 emerged out as excellent antimicrobial agents in antimicrobial assays when compared to standard antibacterial and antifungal drugs. The results of anticancer activity displayed that majority of the derivatives were less cytotoxic than standard drugs (tamoxifen and 5-fluorouracil) towards MCF7 and HCT116 cell lines. However, compound 2 (IC50 = 0.0047 µM/ml) and compound 10 (IC50 = 0.0058 µM/ml) showed highest cytotoxicity against MCF7 and HCT116 cell lines, respectively. The results of in vivo antitubercular activity revealed that a dose of 1.34 mg/kg was found to be safe for the synthesized compounds. The toxic dose of the compounds was 5.67 mg/kg while lethal dose varied from 1.81 to 3.17 mg/kg body weight of the mice. Compound 18 inhibited all the three mycobacterial enzymes to the highest level in comparison to the other synthesized derivatives but showed lesser inhibition as compared to streptomycin sulphate. CONCLUSIONS A further research on most active synthesized compounds as lead molecules may result in discovery of novel anticancer and antitubercular agents.
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Affiliation(s)
- Snehlata Yadav
- Faculty of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak, 124001, India
| | - Siong Meng Lim
- Faculty of Pharmacy, Universiti Teknologi MARA (UiTM), 42300, Bandar Puncak Alam, Selangor Darul Ehsan, Malaysia.,Collaborative Drug Discovery Research (CDDR) Group, Pharmaceutical Life Sciences, Community of Research, Universiti Teknologi MARA (UiTM), 40450, Shah Alam, Selangor Darul Ehsan, Malaysia
| | - Kalavathy Ramasamy
- Faculty of Pharmacy, Universiti Teknologi MARA (UiTM), 42300, Bandar Puncak Alam, Selangor Darul Ehsan, Malaysia.,Collaborative Drug Discovery Research (CDDR) Group, Pharmaceutical Life Sciences, Community of Research, Universiti Teknologi MARA (UiTM), 40450, Shah Alam, Selangor Darul Ehsan, Malaysia
| | - Mani Vasudevan
- Department of Pharmacology and Toxicology, College of Pharmacy, Qassim University, Buraidah, 51452, Saudi Arabia
| | - Syed Adnan Ali Shah
- Faculty of Pharmacy, Universiti Teknologi MARA (UiTM), 42300, Bandar Puncak Alam, Selangor Darul Ehsan, Malaysia.,Atta-ur-Rahman Institute for Natural Products Discovery (AuRIns), Universiti Teknologi MARA, Puncak Alam Campus, 42300, Bandar Puncak Alam, Selangor Darul Ehsan, Malaysia
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Mycobacterium tuberculosis chorismate mutase: A potential target for TB. Bioorg Med Chem 2017; 25:1725-1736. [PMID: 28202315 DOI: 10.1016/j.bmc.2017.02.001] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Accepted: 02/01/2017] [Indexed: 12/27/2022]
Abstract
Mycobacterium tuberculosis chorismate mutase (MtbCM) catalyzes the rearrangement of chorismate to prephenate in the shikimate biosynthetic pathway to form the essential amino acids, phenylalanine and tyrosine. Two genes encoding chorismate mutase have been identified in Mtb. The secretory form,∗MtbCM (encoded by Rv1885c) is assumed to play a key role in pathogenesis of tuberculosis. Also, the inhibition of MtbCM may hinder the supply of nutrients to the organism. Indeed, the existence of chorismate mutase (CM) in bacteria, fungi and higher plants but not in human and low sequence homology among known CM makes it an interesting target for the discovery of anti-tubercular agents. The present article mainly focuses on the recent developments in the structure, function and inhibition of MtbCM. The understanding of various aspects of MtbCM as presented in the current article may facilitate the design and subsequent chemical synthesis of new inhibitors against ∗MtbCM, that could lead to the discovery and development of novel and potent anti-tubercular agents in future.
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Salicylanilide diethyl phosphates as potential inhibitors of some mycobacterial enzymes. ScientificWorldJournal 2014; 2014:703053. [PMID: 25538961 PMCID: PMC4236894 DOI: 10.1155/2014/703053] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Accepted: 09/26/2014] [Indexed: 12/15/2022] Open
Abstract
Antimycobacterially active salicylanilide diethyl phosphates were evaluated to identify their potential drug target(s) for the inhibition of several mycobacterial enzymes, including isocitrate lyase, L-alanine dehydrogenase (MtAlaDH), lysine ε-aminotransferase, chorismate mutase, and pantothenate synthetase. The enzymes are related to the nongrowing state of Mycobacterium tuberculosis. Salicylanilide diethyl phosphates represent new candidates with significant inhibitory activity especially against L-alanine dehydrogenase. The most active MtAlaDH inhibitor, 5-chloro-2-[(3-chlorophenyl)carbamoyl]phenyl diethyl phosphate, has an IC50 of 4.96 µM and the best docking results. Other mycobacterial enzymes were mostly inhibited by some derivatives but at higher concentrations; isocitrate lyase showed the highest resistance to salicylanilide diethyl phosphates.
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Puthiaraj P, Pitchumani K. Triazine-Based Mesoporous Covalent Imine Polymers as Solid Supports for Copper-Mediated Chan-Lam Cross-Coupling N-Arylation Reactions. Chemistry 2014; 20:8761-70. [DOI: 10.1002/chem.201402365] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Revised: 04/24/2014] [Indexed: 01/07/2023]
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Jeankumar VU, Alokam R, Sridevi JP, Suryadevara P, Matikonda SS, Peddi S, Sahithi S, Alvala M, Yogeeswari P, Sriram D. Discovery and Structure Optimization of a Series of Isatin Derivatives asMycobacterium tuberculosisChorismate Mutase Inhibitors. Chem Biol Drug Des 2014; 83:498-506. [DOI: 10.1111/cbdd.12265] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Revised: 10/25/2013] [Accepted: 11/04/2013] [Indexed: 12/20/2022]
Affiliation(s)
- Variam U. Jeankumar
- Department of Pharmacy; Birla Institute of Technology & Science-Pilani; Hyderabad Campus; Shameerpet, R.R. District Hyderabad Andhra Pradesh 500078 India
| | - Reshma Alokam
- Department of Pharmacy; Birla Institute of Technology & Science-Pilani; Hyderabad Campus; Shameerpet, R.R. District Hyderabad Andhra Pradesh 500078 India
| | - Jonnalagadda P. Sridevi
- Department of Pharmacy; Birla Institute of Technology & Science-Pilani; Hyderabad Campus; Shameerpet, R.R. District Hyderabad Andhra Pradesh 500078 India
| | - Priyanka Suryadevara
- Department of Pharmacy; Birla Institute of Technology & Science-Pilani; Hyderabad Campus; Shameerpet, R.R. District Hyderabad Andhra Pradesh 500078 India
| | - Siddharth S. Matikonda
- Department of Pharmacy; Birla Institute of Technology & Science-Pilani; Hyderabad Campus; Shameerpet, R.R. District Hyderabad Andhra Pradesh 500078 India
| | - Santosh Peddi
- Department of Pharmacy; Birla Institute of Technology & Science-Pilani; Hyderabad Campus; Shameerpet, R.R. District Hyderabad Andhra Pradesh 500078 India
| | - Seedarala Sahithi
- Department of Pharmacy; Birla Institute of Technology & Science-Pilani; Hyderabad Campus; Shameerpet, R.R. District Hyderabad Andhra Pradesh 500078 India
| | - Mallika Alvala
- Department of Pharmacy; Birla Institute of Technology & Science-Pilani; Hyderabad Campus; Shameerpet, R.R. District Hyderabad Andhra Pradesh 500078 India
| | - Perumal Yogeeswari
- Department of Pharmacy; Birla Institute of Technology & Science-Pilani; Hyderabad Campus; Shameerpet, R.R. District Hyderabad Andhra Pradesh 500078 India
| | - Dharmarajan Sriram
- Department of Pharmacy; Birla Institute of Technology & Science-Pilani; Hyderabad Campus; Shameerpet, R.R. District Hyderabad Andhra Pradesh 500078 India
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Rasheed S, Rao DN, Reddy KR, Aravinda S, Vishwakarma RA, Das P. C–N bond formation via Cu-catalyzed cross-coupling with boronic acids leading to methyl carbazole-3-carboxylate: synthesis of carbazole alkaloids. RSC Adv 2014. [DOI: 10.1039/c3ra44903c] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Mallikarjuna Rao V, Mahesh Kumar P, Rambabu D, Kapavarapu R, Shobha Rani S, Misra P, Pal M. Novel alkynyl substituted 3,4-dihydropyrimidin-2(1H)-one derivatives as potential inhibitors of chorismate mutase. Bioorg Chem 2013; 51:48-53. [DOI: 10.1016/j.bioorg.2013.08.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Revised: 08/01/2013] [Accepted: 08/09/2013] [Indexed: 11/25/2022]
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Rao DN, Rasheed S, Aravinda S, Vishwakarma RA, Das P. Base and ligand free copper-catalyzed N-arylation of 2-amino-N-heterocycles with boronic acids in air. RSC Adv 2013. [DOI: 10.1039/c3ra40735g] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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