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Hosseini Nasab N, Raza H, Eom YS, Hassan M, Kloczkowski A, Kim SJ. Design and synthesis of thiadiazole-oxadiazole-acetamide derivatives: Elastase inhibition, cytotoxicity, kinetic mechanism, and computational studies. Bioorg Med Chem 2023; 86:117292. [PMID: 37137270 DOI: 10.1016/j.bmc.2023.117292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Revised: 04/20/2023] [Accepted: 04/20/2023] [Indexed: 05/05/2023]
Abstract
Considering the biological significance of 1,3,4-thiadiazole/oxadiazole heterocyclic scaffolds, a novel series of 1,3,4-thiadiazole-1,3,4-oxadiazole-acetamide derivatives (7a-j) was designed and synthesized using molecular hybridization. The inhibitory effects of the target compounds on elastase were evaluated, and all of these molecules were found to be potent inhibitors compared to the standard reference oleanolic acid. Compound 7f exhibited the excellent inhibitory activity (IC50 = 0.06 ± 0.02 μM), which is 214-fold more active than oleanolic acid (IC50 = 12.84 ± 0.45 μM). Kinetic analysis was also performed on the most potent compound (7f) to determine the mode of binding with the target enzyme, and it was discovered that 7f inhibits the enzyme in a competitive manner. Furthermore, the MTT assay method was used to assess their toxicity on the viability of B16F10 melanoma cell lines, and all compounds did not display any toxic effect on the cells even at high concentrations. The molecular docking studies of all compounds also justified with their good docking score and among them, compound 7f had a good conformational state with hydrogen bond interactions within the receptor binding pocket, which is consistent with the experimental inhibition studies.
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Affiliation(s)
- Narges Hosseini Nasab
- Department of Biological Sciences, Kongju National University, Gongju 32588, Republic of Korea
| | - Hussain Raza
- Department of Biological Sciences, Kongju National University, Gongju 32588, Republic of Korea
| | - Young Seok Eom
- Department of Biological Sciences, Kongju National University, Gongju 32588, Republic of Korea
| | - Mubashir Hassan
- The Steve and Cindy Rasmussen Institute for Genomic Medicine at Nationwide Children's, Hospital, Department of Pediatrics, Columbus, OH 43205, USA
| | - Andrzej Kloczkowski
- The Steve and Cindy Rasmussen Institute for Genomic Medicine at Nationwide Children's, Hospital, Department of Pediatrics, Columbus, OH 43205, USA
| | - Song Ja Kim
- Department of Biological Sciences, Kongju National University, Gongju 32588, Republic of Korea.
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Comparative Study of the Synthetic Approaches and Biological Activities of the Bioisosteres of 1,3,4-Oxadiazoles and 1,3,4-Thiadiazoles over the Past Decade. Molecules 2022; 27:molecules27092709. [PMID: 35566059 PMCID: PMC9102899 DOI: 10.3390/molecules27092709] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 04/19/2022] [Accepted: 04/19/2022] [Indexed: 01/27/2023] Open
Abstract
The bioisosteres of 1,3,4-oxadiazoles and 1,3,4-thiadiazoles are well-known pharmacophores for many medicinally important drugs. Throughout the past 10 years, 1,3,4-oxa-/thiadiazole nuclei have been very attractive to researchers for drug design, synthesis, and the study of their potential activity towards a variety of diseases, including microbial and viral infections, cancer, diabetes, pain, and inflammation. This work is an up-to-date comparative study that identifies the differences between 1,3,4-thiadiazoles and 1,3,4-oxadiazoles concerning their methods of synthesis from different classes of starting compounds under various reaction conditions, as well as their biological activities and structure–activity relationship.
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MnO2 on hydroxyapatite: A green heterogeneous catalyst and synthesis of pyran-carboxamide derivatives. INORG CHEM COMMUN 2020. [DOI: 10.1016/j.inoche.2019.107706] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Kerru N, Maddila SN, Maddila S, Sobhanapuram S, Jonnalagadda SB. Synthesis and antimicrobial activity of novel thienopyrimidine linked rhodanine derivatives. CAN J CHEM 2019. [DOI: 10.1139/cjc-2018-0220] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This work presents the preparation of a new series of N-(substituted phenyl)-2-(4-oxo-5-(4-(thieno[2,3-d]-pyrimidin-4-yloxy)benzylidene)-2-thioxothiazolidin-3-yl)acetamide derivatives (8a–8l). A condensation reaction of thienopyrimidin-2-thioxothiazolidin-4-one derivative (5) with various 2-chloro-N-phenylacetamides (7a–7l) was employed to afford the new thienopyrimidine tagged rhodanine derivatives under acetone solvent in the presence of potassium carbonate (K2CO3). All of the novel target molecules were characterized by IR, 1H NMR, 13C NMR, and LC–MS spectral analyses and were screened for their in vitro antimicrobial activity by using the broth dilution method. Compounds 8c, 8g, and 8h found to have antibacterial potency against E. coli, B. subtilis, B. cereus, and K. pneumonia with minimum inhibitory concentrations (MICs) of 3.25–6.25 μg/mL compared with the standard Gentamicin. Compounds 8c and 8f demonstrated better antifungal potency (MIC = 3.25–6.25 μg/mL) against A. flavus, A. niger, P. marneffei, and C. albicans when compared with Fluconazole.
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Affiliation(s)
- Nagaraju Kerru
- School of Chemistry & Physics, University of KwaZulu-Natal, Westville Campus, Chilten Hills, Private Bag 54001, Durban-4000, South Africa
| | - Surya Narayana Maddila
- School of Chemistry & Physics, University of KwaZulu-Natal, Westville Campus, Chilten Hills, Private Bag 54001, Durban-4000, South Africa
| | - Suresh Maddila
- School of Chemistry & Physics, University of KwaZulu-Natal, Westville Campus, Chilten Hills, Private Bag 54001, Durban-4000, South Africa
- GITAM Institute of Sciences, GITAM University, Visakhapatnam, Andhra Pradesh, India
| | | | - Sreekantha B. Jonnalagadda
- School of Chemistry & Physics, University of KwaZulu-Natal, Westville Campus, Chilten Hills, Private Bag 54001, Durban-4000, South Africa
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Maddila SN, Maddila S, Gangu KK, van Zyl WE, Jonnalagadda SB. Sm2O3/Fluoroapatite as a reusable catalyst for the facile, green, one-pot synthesis of triazolidine-3-thione derivatives under aqueous conditions. J Fluor Chem 2017. [DOI: 10.1016/j.jfluchem.2017.01.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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A facile, efficient, and sustainable chitosan/CaHAp catalyst and one-pot synthesis of novel 2,6-diamino-pyran-3,5-dicarbonitriles. Mol Divers 2016; 21:247-255. [DOI: 10.1007/s11030-016-9708-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 11/06/2016] [Indexed: 10/20/2022]
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A facile, efficacious and reusable Sm2O3/ZrO2 catalyst for the novel synthesis of functionalized 1,4-dihydropyridine derivatives. CATAL COMMUN 2016. [DOI: 10.1016/j.catcom.2016.02.017] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Shabalala N, Maddila S, Jonnalagadda SB. Catalyst-free, one-pot, four-component green synthesis of functionalized 1-(2-fluorophenyl)-1,4-dihydropyridines under ultrasound irradiation. NEW J CHEM 2016. [DOI: 10.1039/c5nj03574k] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A catalyst-free synthesis protocol for functionalized 1,4-dihydropyridines under ultrasonic irradiation in aqueous ethanol is reported with excellent yields. Eleven new compounds are synthesized using dimethylacetylenedicarboxylate, 2-fluoroaniline, malononitrile and various substituted aldehydes.
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Affiliation(s)
- Nhlanhla Shabalala
- School of Chemistry and Physics
- University of Kwa-Zulu Natal
- Durban
- South Africa
| | - Suresh Maddila
- School of Chemistry and Physics
- University of Kwa-Zulu Natal
- Durban
- South Africa
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Maddila S, Naicker K, Momin MIK, Rana S, Gorle S, Maddila S, Yalagala K, Singh M, Koorbanally NA, Jonnalagadda SB. Novel 2-(1-(substitutedbenzyl)-1H-tetrazol-5-yl)-3-phenylacrylonitrile derivatives: synthesis, in vitro antitumor activity and computational studies. Med Chem Res 2015. [DOI: 10.1007/s00044-015-1482-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Synthesis, antimicrobial activity and molecular docking studies of pyrano[2,3-d]pyrimidine formimidate derivatives. RESEARCH ON CHEMICAL INTERMEDIATES 2015. [DOI: 10.1007/s11164-015-2243-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Maddila SN, Maddila S, van Zyl WE, Jonnalagadda SB. Ceria-Vanadia/Silica-Catalyzed Cascade for C-C and C-O Bond Activation: Green One-Pot Synthesis of 2-Amino-3-cyano-4H-pyrans. ChemistryOpen 2015; 5:38-42. [PMID: 27308209 PMCID: PMC4906492 DOI: 10.1002/open.201500159] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Indexed: 11/06/2022] Open
Abstract
We designed a ceria-vanadia/silica (Ce-V/SiO2) heterogeneous catalyst and used it for the green and efficient synthesis of 2-amino-3-cyano-4H-pyran derivatives. The green reaction was a multicomponent one-pot condensation of 5,5-dimethylcyclohexane-1,3-dione, aromatic aldehyde, and malononitrile in an eco-compatible solvent (ethanol). The catalyst was synthesized and fully characterized by powder X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and Brunauer-Emmett-Teller (BET) surface area analysis. The reported procedure offers a number of advantages including decreased reaction times, mild conditions, high yields, operational simplicity, and environmentally benign and simple work-up procedures. Furthermore, the catalyst is economical, fully recyclable, and reusable for over five runs while preserving its high activity. The synthesized 2-amino-3-cyano-4H-pyran products can later be used for pharmaceutical purposes.
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Affiliation(s)
- Surya Narayana Maddila
- School of Chemistry & Physics University of KwaZulu-Natal Westville Campus Chiltern Hills Durban 4000 South Africa
| | - Suresh Maddila
- School of Chemistry & Physics University of KwaZulu-Natal Westville Campus Chiltern Hills Durban 4000 South Africa
| | - Werner E van Zyl
- School of Chemistry & Physics University of KwaZulu-Natal Westville Campus Chiltern Hills Durban 4000 South Africa
| | - Sreekantha B Jonnalagadda
- School of Chemistry & Physics University of KwaZulu-Natal Westville Campus Chiltern Hills Durban 4000 South Africa
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Maddila S, Pagadala R, Jonnalagadda SB. Synthesis and Insecticidal Activity of Tetrazole-Linked Triazole Derivatives. J Heterocycl Chem 2014. [DOI: 10.1002/jhet.2078] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Suresh Maddila
- School of Chemistry & Physics; University of KwaZulu-Natal; Westville Campus, Chiltern Hills Durban 4000 South Africa
| | - Ramakanth Pagadala
- School of Chemistry & Physics; University of KwaZulu-Natal; Westville Campus, Chiltern Hills Durban 4000 South Africa
| | - Sreekanth B. Jonnalagadda
- School of Chemistry & Physics; University of KwaZulu-Natal; Westville Campus, Chiltern Hills Durban 4000 South Africa
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Pagadala R, Maddila S, Jonnalagadda SB. Eco-efficient ultrasonic responsive synthesis of pyrimidines/pyridines. ULTRASONICS SONOCHEMISTRY 2014; 21:472-477. [PMID: 24063995 DOI: 10.1016/j.ultsonch.2013.08.024] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Revised: 08/01/2013] [Accepted: 08/31/2013] [Indexed: 06/02/2023]
Abstract
Using ultrasound irradiation, two simple one-pot multicomponent methods are described for syntheses of highly functionalized pyrimidine/pyridine derivatives in excellent yields in the presence of NaOH at room temperature. While one route involved aromatic aldehyde, thiourea and acetoacetanilide, the other employed aromatic aldehyde, malononitrile and benzyl mercaptane or EtOH. These approaches afford several advantages over former and contemporary reaction methodologies in terms of operational simplicity, simple work-up procedure, higher yield, short reaction time and environment friendly protocols.
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Affiliation(s)
- Ramakanth Pagadala
- School of Chemistry & Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, Durban 4000, South Africa
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