1
|
Oruma US, Ukoha PO, Uzoewulu CP, Ndefo JC, Ugwuoke SC, Ukwueze NN, Eze TE, Ekowo LC, Eze FU, Chinaegbomkpa UV, Okafor SN, Ezeorah CJ. Synthesis, Biological and In Silico Studies of a Tripodal Schiff Base Derived from 2,4,6-Triamino-1,3,5-triazine and Its Trinuclear Dy(III), Er(III), and Gd(III) Salen Capped Complexes. Molecules 2021; 26:molecules26144379. [PMID: 34299654 PMCID: PMC8304507 DOI: 10.3390/molecules26144379] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/28/2021] [Accepted: 07/14/2021] [Indexed: 12/03/2022] Open
Abstract
A tripodal Schiff base ligand, 2,4,6-Tris(4-carboxybenzimino)-1,3,5-triazine (MT) and its trinuclear Dy(III), Er(III), and Gd(III) complexes were synthesized. These were characterized using UV-visible, IR, 1H, and 13C NMR spectroscopies, elemental analysis, and molar conductivity measurements. The spectral studies indicate that the ligand is hexadentate and coordinates to the Ln(III) ions through the oxygen atoms of the carboxylic group. The trinuclear complexes were characterized as being bridged by carboxylate anions to the Dy(III), Er(III), and Gd(III) salen centers and displaying a coordination number of six. Biological studies revealed that MT is more active against the test micro-organisms relative to the trinuclear complexes. Acute toxicity studies revealed that MT is safe and has a wide range of effective doses (ED50). In vivo antimalarial studies indicate that MT could serve as an effective antimalarial agent since it has parasitemia inhibition of 84.02% at 50 mg/kg and 65.81% at 25 mg/kg, close to the value (87.22%) of the standard drug—Artesunate. Molecular docking simulation studies on the compounds against SARS-CoV-2 (6Y84) and E. coli DNA gyrase (5MMN) revealed effective binding interactions through multiple bonding modes. The binding energy calculated for Er(III)MT-6Y84 and Er(III)MT-5MMN complexes showed active molecules with the ability to inhibit SARS-CoV-2 and E. coli DNA gyrase.
Collapse
Affiliation(s)
- Uchechukwu Susan Oruma
- Coordination Chemistry and Inorganic Pharmaceuticals Unit, Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka 410001, Nigeria; (U.S.O.); (P.O.U.)
| | - Pius Oziri Ukoha
- Coordination Chemistry and Inorganic Pharmaceuticals Unit, Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka 410001, Nigeria; (U.S.O.); (P.O.U.)
| | - Chiamaka Peace Uzoewulu
- Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka 410001, Nigeria; (C.P.U.); (N.N.U.); (T.E.E.); (L.C.E.); (F.U.E.); (U.V.C.)
| | - Joseph Chinedum Ndefo
- Department of Science Laboratory Sciences, University of Nigeria, Nsukka 410001, Nigeria;
| | | | - Nkechinyere Nwanneka Ukwueze
- Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka 410001, Nigeria; (C.P.U.); (N.N.U.); (T.E.E.); (L.C.E.); (F.U.E.); (U.V.C.)
| | - Tochukwu Emmanuella Eze
- Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka 410001, Nigeria; (C.P.U.); (N.N.U.); (T.E.E.); (L.C.E.); (F.U.E.); (U.V.C.)
- Department of Biochemistry, University of Nigeria, Nsukka 410001, Nigeria;
| | - Lilian Chinenye Ekowo
- Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka 410001, Nigeria; (C.P.U.); (N.N.U.); (T.E.E.); (L.C.E.); (F.U.E.); (U.V.C.)
| | - Florence Uchenna Eze
- Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka 410001, Nigeria; (C.P.U.); (N.N.U.); (T.E.E.); (L.C.E.); (F.U.E.); (U.V.C.)
| | - Uchenna Vivian Chinaegbomkpa
- Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka 410001, Nigeria; (C.P.U.); (N.N.U.); (T.E.E.); (L.C.E.); (F.U.E.); (U.V.C.)
- Department of Chemistry, Federal University of Technology, Owerri 460114, Nigeria
| | - Sunday Nwankwo Okafor
- Department of Pharmaceutical and Medicinal Chemistry, University of Nigeria, Nsukka 410001, Nigeria
- Correspondence: (S.N.O.); (C.J.E.); Tel.: +234-803-655-6699 (S.N.O.); +234-703-299-6667 (C.J.E.)
| | - Chigozie Julius Ezeorah
- Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka 410001, Nigeria; (C.P.U.); (N.N.U.); (T.E.E.); (L.C.E.); (F.U.E.); (U.V.C.)
- Correspondence: (S.N.O.); (C.J.E.); Tel.: +234-803-655-6699 (S.N.O.); +234-703-299-6667 (C.J.E.)
| |
Collapse
|
2
|
Singh P, Kaur S, Kumari P, Kaur B, Kaur M, Singh G, Bhatti R, Bhatti M. Tailoring the Substitution Pattern on 1,3,5-Triazine for Targeting Cyclooxygenase-2: Discovery and Structure–Activity Relationship of Triazine–4-Aminophenylmorpholin-3-one Hybrids that Reverse Algesia and Inflammation in Swiss Albino Mice. J Med Chem 2018; 61:7929-7941. [DOI: 10.1021/acs.jmedchem.8b00922] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
|
3
|
Kaur S, Kumari P, Singh G, Bhatti R, Singh P. Design and Synthesis of Aza-/Oxa Heterocycle-Based Conjugates as Novel Anti-Inflammatory Agents Targeting Cyclooxygenase-2. ACS OMEGA 2018; 3:5825-5845. [PMID: 30023927 PMCID: PMC6044720 DOI: 10.1021/acsomega.8b00445] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 05/17/2018] [Indexed: 05/13/2023]
Abstract
A library of hybrid molecules was procured by the combination of triazine-indole adduct with morpholine/piperidine/pyrrolidine and pyrazole/pyrimidine/oxindole moieties. Enzyme immunoassays on cyclooxygenase-1 (COX-1) and cyclooxygenase-2 (COX-2) identified compound 6 having an IC50 value of 20 nM for COX-2 and 3000 nM for COX-1. The significant reduction in the formation of prostaglandin E2 in the lipopolysaccharide-treated (COX-2-activated) human whole blood, almost no change in the production of thromboxane B2 in the calcium ionophore-treated (COX-1-activated) sample of human whole blood, and the mechanistic studies on Swiss albino mice ensured that compound 6 is selective for COX-2. The association constant (Ka) of compound 6 with COX-2 was found to be of the order of 0.48 × 106 M-1. The diffusion spectroscopy experiments and relaxation time (T1) calculations of compound 6 in the presence of COX-2 assisted in identifying the site-specific interactions of 6 with the enzyme, and these results fall into nice correlation with the theoretical data obtained from molecular docking and quantitative structure-activity relationship studies. With maximum tolerable dose >2000 mg kg-1, compound 6 made 68 and 32% reduction in formalin-induced analgesia and carrageenan-induced inflammation in Swiss albino mice.
Collapse
Affiliation(s)
- Sukhmeet Kaur
- Department
of Chemistry—Centre for Advanced Studies and Department of
Pharmaceutical Sciences, Guru Nanak Dev
University, Amritsar 143005, India
| | - Priya Kumari
- Department
of Chemistry—Centre for Advanced Studies and Department of
Pharmaceutical Sciences, Guru Nanak Dev
University, Amritsar 143005, India
| | - Gurjit Singh
- Department
of Chemistry—Centre for Advanced Studies and Department of
Pharmaceutical Sciences, Guru Nanak Dev
University, Amritsar 143005, India
| | - Rajbir Bhatti
- Department
of Chemistry—Centre for Advanced Studies and Department of
Pharmaceutical Sciences, Guru Nanak Dev
University, Amritsar 143005, India
| | - Palwinder Singh
- Department
of Chemistry—Centre for Advanced Studies and Department of
Pharmaceutical Sciences, Guru Nanak Dev
University, Amritsar 143005, India
- E-mail: (P.S.)
| |
Collapse
|
4
|
Elshemy HA, Abdelall EK, Azouz AA, Moawad A, Ali WA, Safwat NM. Synthesis, anti-inflammatory, cyclooxygenases inhibitions assays and histopathological study of poly-substituted 1,3,5-triazines: Confirmation of regiospecific pyrazole cyclization by HMBC. Eur J Med Chem 2017; 127:10-21. [DOI: 10.1016/j.ejmech.2016.12.030] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Revised: 12/12/2016] [Accepted: 12/13/2016] [Indexed: 01/31/2023]
|
5
|
Transition metal-free one-pot synthesis of nitrogen-containing heterocycles. Mol Divers 2015; 20:185-232. [DOI: 10.1007/s11030-015-9596-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Accepted: 04/02/2015] [Indexed: 01/22/2023]
|
6
|
Abstract
This review summarizes recent reports on s-triazine and its respective analogs from the medicinal chemistry angle. Due to its high reactivity and binding characteristic towards various enzymes, s-triazine has attracted attention. This is combined with facile synthesis and interesting pharmacology. The triazine class demonstrates wide biological applications - including antimicrobial, antituberculosis, anticancer, antiviral and antimalarial. In this article the library of s-triazine-based molecular designs has been collated with respective bioactivity. Compounds are further compared with other heterocyclic/nontriazine moieties to correlate the efficiency of privileged s-triazine. We hope this article may assist chemists in their drug design and discovery efforts.
Collapse
|
7
|
Patel AB, Chikhalia KH, Kumari P. An efficient synthesis of new thiazolidin-4-one fused s-triazines as potential antimicrobial and anticancer agents. JOURNAL OF SAUDI CHEMICAL SOCIETY 2014. [DOI: 10.1016/j.jscs.2014.02.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
8
|
Patel AB, Chikhalia KH, Kumari P. Facile synthesis of benzonitrile/nicotinonitrile based s-triazines as new potential antimycobacterial agents. Eur J Med Chem 2014; 79:57-65. [PMID: 24721315 DOI: 10.1016/j.ejmech.2014.03.085] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Revised: 03/28/2014] [Accepted: 03/31/2014] [Indexed: 10/25/2022]
Abstract
A common strategy to synthesize 4/6-(4-(4-methylpiperazin-1-yl)-6-(4-(4-oxo-2-phenylthiazolidin-3-yl)phenyl)-1,3,5-triazin-2-yloxy)benzonitriles/nicotinonitriles was developed by applying an efficient palladium-catalyzed C-C Suzuki coupling. Moreover, the synthesized compounds were also tested for their in vitro antimycobacterial activity against Mycobacterium tuberculosis H37Rv using BACTEC MGIT and Lowenstein-Jensen MIC methods. Several compounds displayed profound antimycobacterial activity in combination with low toxicity towards mammalian cells. The best results were observed amongst the nicotinonitrile substituted s-triazine analogs and it could be a potential starting point to develop new lead compounds in the fight against M. tuberculosis H37Rv. The newly synthesized compounds were characterized by IR, (1)H NMR, (13)C NMR, MS and elemental analysis.
Collapse
Affiliation(s)
- Amit B Patel
- Department of Applied Chemistry, S. V. National Institute of Technology, Surat 395007, India
| | - Kishor H Chikhalia
- Department of Chemistry, School of Science, Gujarat University, Ahmedabad 380009, India.
| | - Premlata Kumari
- Department of Applied Chemistry, S. V. National Institute of Technology, Surat 395007, India.
| |
Collapse
|
9
|
Polovkovych SV, Karkhut AI, Marintsova NG, Lesyk RB, Zimenkovsky BS, Novikov VP. Synthesis of New Schiff Bases and Polycyclic Fused Thiopyranothiazoles Containing 4,6-Dichloro-1,3,5-Triazine Moiety. J Heterocycl Chem 2013. [DOI: 10.1002/jhet.890] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Svyatoslav V. Polovkovych
- Department of Technology of Biologically Active Substances, Pharmacy and Biotechnology; National University “Lviv Polytechnic,” Bandera 12; Lviv 79013 Ukraine
| | - Andrew I. Karkhut
- Department of Technology of Biologically Active Substances, Pharmacy and Biotechnology; National University “Lviv Polytechnic,” Bandera 12; Lviv 79013 Ukraine
| | - Natalia G. Marintsova
- Department of Technology of Biologically Active Substances, Pharmacy and Biotechnology; National University “Lviv Polytechnic,” Bandera 12; Lviv 79013 Ukraine
| | - Roman B. Lesyk
- Department of Pharmaceutical, Organic and Bioorganic Chemistry; Danylo Halytsky Lviv National Medical University; Pekarska 69 Lviv 79010 Ukraine
| | - Borys S. Zimenkovsky
- Department of Pharmaceutical, Organic and Bioorganic Chemistry; Danylo Halytsky Lviv National Medical University; Pekarska 69 Lviv 79010 Ukraine
| | - Volodymyr P. Novikov
- Department of Technology of Biologically Active Substances, Pharmacy and Biotechnology; National University “Lviv Polytechnic,” Bandera 12; Lviv 79013 Ukraine
| |
Collapse
|
10
|
Metzger A, Melzig L, Despotopoulou C, Knochel P. Pd-catalyzed cross-coupling of functionalized organozinc reagents with thiomethyl-substituted heterocycles. Org Lett 2010; 11:4228-31. [PMID: 19691353 DOI: 10.1021/ol9017003] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Various thiomethyl-substituted N-heterocycles (pyridines, pyrimidines, pyrazines, pyridazines, triazines, benzothiazoles, benzoxazoles, pyrazoles, benzindazoles, quinazolines, etc.) undergo smooth Pd-catalyzed cross-coupling reactions with functionalized aryl-, heteroaryl-, benzylic-, and alkylzinc reagents using Pd(OAc)(2)/S-Phos as the catalytic system mostly at 25 degrees C. No copper salt is required to perform these reactions.
Collapse
Affiliation(s)
- Albrecht Metzger
- Department Chemie und Biochemie, Ludwig-Maximilians-University, Butenandtstr. 5-13, 81377, Munich, Germany
| | | | | | | |
Collapse
|