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Coanda M, Limban C, Draghici C, Ciobanu AM, Grigore GA, Popa M, Stan M, Larion C, Avram S, Mares C, Ciornei MC, Dabu A, Hudita A, Galateanu B, Pintilie L, Nuta DC. Current Perspectives on Biological Screening of Newly Synthetised Sulfanilamide Schiff Bases as Promising Antibacterial and Antibiofilm Agents. Pharmaceuticals (Basel) 2024; 17:405. [PMID: 38675368 PMCID: PMC11053482 DOI: 10.3390/ph17040405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 03/08/2024] [Accepted: 03/19/2024] [Indexed: 04/28/2024] Open
Abstract
Growing resistance to antimicrobials, combined with pathogens that form biofilms, presents significant challenges in healthcare. Modifying current antimicrobial agents is an economical approach to developing novel molecules that could exhibit biological activity. Thus, five sulfanilamide Schiff bases were synthesized under microwave irradiation and characterized spectroscopically and in silico. They were evaluated for their antimicrobial and antibiofilm activities against both Gram-positive and Gram-negative bacterial strains. Their cytotoxic potential against two cancer cell lines was also determined. Gram-positive bacteria were susceptible to the action of these compounds. Derivatives 1b and 1d inhibited S. aureus's growth (MIC from 0.014 mg/mL) and biofilm (IC from 0.029 mg/mL), while compound 1e was active against E. faecalis's planktonic and sessile forms. Two compounds significantly reduced cell viability at 5 μg/mL after 24 h of exposure (1d-HT-29 colorectal adenocarcinoma cells, 1c-LN229 glioblastoma cells). A docking study revealed the increased binding affinities of these derivatives compared to sulfanilamide. Hence, these Schiff bases exhibited higher activity compared to their parent drug, with halogen groups playing a crucial role in both their antimicrobial and cytotoxic effects.
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Affiliation(s)
- Maria Coanda
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Carol Davila University of Medicine and Pharmacy, 6 Traian Vuia Str., 020950 Bucharest, Romania; (M.C.); (D.C.N.)
| | - Carmen Limban
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Carol Davila University of Medicine and Pharmacy, 6 Traian Vuia Str., 020950 Bucharest, Romania; (M.C.); (D.C.N.)
| | - Constantin Draghici
- Costin D. Nenitzescu Institute of Organic and Supramolecular Chemistry, 202 B Splaiul Independentei, 060023 Bucharest, Romania;
| | - Anne-Marie Ciobanu
- Department of Drug Control, Faculty of Pharmacy, Carol Davila University of Medicine and Pharmacy, 6 Traian Vuia Str., 020950 Bucharest, Romania;
| | - Georgiana Alexandra Grigore
- Faculty of Biology, University of Bucharest, Splaiul Independenței 91-95, 050095 Bucharest, Romania; (G.A.G.); (M.P.); (M.S.)
- Research Institute of the University of Bucharest (ICUB), University of Bucharest, Șoseaua Panduri 90, 050663 Bucharest, Romania; (C.L.); (A.H.); (B.G.)
- National Institute Research and Development for Biological Sciences, Splaiul Independenței 296, 060031 Bucharest, Romania
| | - Marcela Popa
- Faculty of Biology, University of Bucharest, Splaiul Independenței 91-95, 050095 Bucharest, Romania; (G.A.G.); (M.P.); (M.S.)
- Research Institute of the University of Bucharest (ICUB), University of Bucharest, Șoseaua Panduri 90, 050663 Bucharest, Romania; (C.L.); (A.H.); (B.G.)
| | - Miruna Stan
- Faculty of Biology, University of Bucharest, Splaiul Independenței 91-95, 050095 Bucharest, Romania; (G.A.G.); (M.P.); (M.S.)
| | - Cristina Larion
- Research Institute of the University of Bucharest (ICUB), University of Bucharest, Șoseaua Panduri 90, 050663 Bucharest, Romania; (C.L.); (A.H.); (B.G.)
| | - Speranta Avram
- Department of Anatomy, Animal Physiology and Biophysics, Faculty of Biology, University of Bucharest, Splaiul Independentei 91-95, 050095 Bucharest, Romania; (S.A.); (C.M.)
| | - Catalina Mares
- Department of Anatomy, Animal Physiology and Biophysics, Faculty of Biology, University of Bucharest, Splaiul Independentei 91-95, 050095 Bucharest, Romania; (S.A.); (C.M.)
| | - Mariana-Catalina Ciornei
- Physiology Department, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania;
| | - Aura Dabu
- Neurosurgery Department 1, The University Emergency Hospital of Bucharest, Splaiul Independenței 169, 050098 Bucharest, Romania;
| | - Ariana Hudita
- Faculty of Biology, University of Bucharest, Splaiul Independenței 91-95, 050095 Bucharest, Romania; (G.A.G.); (M.P.); (M.S.)
- Research Institute of the University of Bucharest (ICUB), University of Bucharest, Șoseaua Panduri 90, 050663 Bucharest, Romania; (C.L.); (A.H.); (B.G.)
| | - Bianca Galateanu
- Faculty of Biology, University of Bucharest, Splaiul Independenței 91-95, 050095 Bucharest, Romania; (G.A.G.); (M.P.); (M.S.)
- Research Institute of the University of Bucharest (ICUB), University of Bucharest, Șoseaua Panduri 90, 050663 Bucharest, Romania; (C.L.); (A.H.); (B.G.)
| | - Lucia Pintilie
- National Institute for Chemical-Pharmaceutical Research and Development, 112 Vitan Av., 031299 Bucharest, Romania;
| | - Diana Camelia Nuta
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Carol Davila University of Medicine and Pharmacy, 6 Traian Vuia Str., 020950 Bucharest, Romania; (M.C.); (D.C.N.)
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Pirvu LC, Pintilie L, Albulescu A, Stefaniu A, Neagu G. Anti-Proliferative Potential of Cynaroside and Orientin-In Silico (DYRK2) and In Vitro (U87 and Caco-2) Studies. Int J Mol Sci 2023; 24:16555. [PMID: 38068880 PMCID: PMC10705913 DOI: 10.3390/ijms242316555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 11/06/2023] [Accepted: 11/07/2023] [Indexed: 12/18/2023] Open
Abstract
Luteolin derivates are plant compounds with multiple benefits for human health. Stability to heat and acid hydrolysis and high resistance to (auto)oxidation are other arguments for the laden interest in luteolin derivates today. The present study was designed to compare the in silico and in vitro anti-proliferative potential of two luteolin derivates, luteolin-7-O-glucoside/cynaroside (7-Lut) and luteolin-8-C-glucoside/orientin (8-Lut). In silico investigations were carried out on the molecular target, namely, the human dual specificity tyrosine phosphorylation-regulated kinase 2 (DYRK2) in association with its natural ligand, curcumin (PDB ID: 5ZTN), by CLC Drug Discovery Workbench v. 1.5.1. software and Molegro Virtual Docker (MVD) v. MVD 2019.7.0. software. In vitro studies were performed on two human tumor cell lines, glioblastoma (U87) and colon carcinoma (Caco-2), respectively. Altogether, docking studies have revealed 7-Lut and 8-Lut as effective inhibitors of DYRK2, even stronger than the native ligand curcumin; in vitro studies indicated the ability of both luteolin glucosides to inhibit the viability of both human tumor cell lines, up to 85% at 50 and 100 µg/mL, respectively; the most augmented cytotoxic and anti-proliferative effects were obtained for U87 exposed to 7-Lut (IC50 = 26.34 µg/mL). The results support further studies on cynaroside and orientin to create drug formulas targeting glioblastoma and colon carcinoma in humans.
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Affiliation(s)
- Lucia Camelia Pirvu
- Department of Pharmaceutical Biotechnologies, National Institute of Chemical Pharmaceutical R&D—ICCF Bucharest, 112 Vitan, 031299 Bucharest, Romania;
| | - Lucia Pintilie
- Department of Synthesis of Bioactive Substances and Pharmaceutical Technologies, National Institute of Chemical Pharmaceutical R&D—ICCF Bucharest, 112 Vitan, 031299 Bucharest, Romania;
| | - Adrian Albulescu
- Department of Pharmacology, National Institute of Chemical Pharmaceutical R&D—ICCF Bucharest, 112 Vitan, 031299 Bucharest, Romania;
- Stefan S. Nicolau Institute of Virology, Molecular Virology Department, 285 Mihai Bravu, 030304 Bucharest, Romania
| | - Amalia Stefaniu
- Department of Pharmaceutical Biotechnologies, National Institute of Chemical Pharmaceutical R&D—ICCF Bucharest, 112 Vitan, 031299 Bucharest, Romania;
| | - Georgeta Neagu
- Department of Pharmacology, National Institute of Chemical Pharmaceutical R&D—ICCF Bucharest, 112 Vitan, 031299 Bucharest, Romania;
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Roman R, Pintilie L, Nuță DC, Căproiu MT, Dumitrașcu F, Zarafu I, Ioniță P, Marinaș IC, Măruțescu L, Kapronczai E, Ardelean S, Limban C. Contribution to the Synthesis, Characterization, Separation and Quantification of New N-Acyl Thiourea Derivatives with Antimicrobial and Antioxidant Potential. Pharmaceutics 2023; 15:2501. [PMID: 37896261 PMCID: PMC10609700 DOI: 10.3390/pharmaceutics15102501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 10/08/2023] [Accepted: 10/17/2023] [Indexed: 10/29/2023] Open
Abstract
The present study aimed to synthesize, characterize, and validate a separation and quantification method of new N-acyl thiourea derivatives (1a-1o), incorporating thiazole or pyridine nucleus in the same molecule and showing antimicrobial potential previously predicted in silico. The compounds have been physiochemically characterized by their melting points, IR, NMR and MS spectra. Among the tested compounds, 1a, 1g, 1h, and 1o were the most active against planktonic Staphylococcus aureus and Pseudomonas aeruginosa, as revealed by the minimal inhibitory concentration values, while 1e exhibited the best anti-biofilm activity against Escherichia coli (showing the lowest value of minimal inhibitory concentration of biofilm development). The total antioxidant activity (TAC) assessed by the DPPH method, evidenced the highest values for the compound 1i, followed by 1a. A routine quality control method for the separation of highly related compounds bearing a chlorine atom on the molecular backbone (1g, 1h, 1i, 1j, 1m, 1n) has been developed and validated by reversed-phase high-performance liquid chromatography (RP-HPLC), the results being satisfactory for all validation parameters recommended by the ICH guidelines (i.e., system suitability, specificity, the limits of detection and quantification, linearity, precision, accuracy and robustness) and recommending it for routine separation of these highly similar compounds.
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Affiliation(s)
- Roxana Roman
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, 6 Traian Vuia, 020956 Bucharest, Romania; (R.R.); (D.C.N.); (C.L.)
| | - Lucia Pintilie
- National Institute of Chemical-Pharmaceutical Research & Development, 112 Vitan Av., 031299 Bucharest, Romania
| | - Diana Camelia Nuță
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, 6 Traian Vuia, 020956 Bucharest, Romania; (R.R.); (D.C.N.); (C.L.)
| | - Miron Teodor Căproiu
- “C. D. Nenitzescu” Institute of Organic and Supramolecular Chemistry, 202B Splaiul Independenței, 060023 Bucharest, Romania; (M.T.C.); (F.D.)
| | - Florea Dumitrașcu
- “C. D. Nenitzescu” Institute of Organic and Supramolecular Chemistry, 202B Splaiul Independenței, 060023 Bucharest, Romania; (M.T.C.); (F.D.)
| | - Irina Zarafu
- Department of Organic Chemistry, Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, 4-12 Regina Elisabeta, 030018 Bucharest, Romania; (I.Z.); (P.I.)
| | - Petre Ioniță
- Department of Organic Chemistry, Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, 4-12 Regina Elisabeta, 030018 Bucharest, Romania; (I.Z.); (P.I.)
| | - Ioana Cristina Marinaș
- Research Institute of the University of Bucharest, University of Bucharest, 90 Panduri Road, 030018 Bucharest, Romania;
- Sanimed International Impex S.R.L., 087040 Calugareni, Romania;
| | - Luminița Măruțescu
- Sanimed International Impex S.R.L., 087040 Calugareni, Romania;
- Department of Microbiology and Immunology, Faculty of Biology, University of Bucharest, 91-96 Splaiul Independenței, 060101 Bucharest, Romania
| | - Eleonora Kapronczai
- Supramolecular Organic and Organometallic Chemistry Centre, Department of Chemistry, Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, 11 Arany János, 400028 Cluj-Napoca, Romania
| | - Simona Ardelean
- Department of Pharmaceutical Technology, Faculty of Pharmacy, “Vasile Goldiș” Western University, 86 Liviu Rebreanu, 310045 Arad, Romania;
| | - Carmen Limban
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, 6 Traian Vuia, 020956 Bucharest, Romania; (R.R.); (D.C.N.); (C.L.)
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Roman R, Pintilie L, Căproiu MT, Dumitrașcu F, Nuță DC, Zarafu I, Ioniță P, Chifiriuc MC, Chiriță C, Moroșan A, Popa M, Bleotu C, Limban C. New N-acyl Thiourea Derivatives: Synthesis, Standardized Quantification Method and In Vitro Evaluation of Potential Biological Activities. Antibiotics (Basel) 2023; 12:antibiotics12050807. [PMID: 37237710 DOI: 10.3390/antibiotics12050807] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 04/12/2023] [Accepted: 04/15/2023] [Indexed: 05/28/2023] Open
Abstract
New N-acyl thiourea derivatives with heterocyclic rings have been synthesized by first obtaining isothiocyanate, which further reacted with a heterocyclic amine, characterized by (FT-IR, NMR spectroscopy and FT-ICR) and tested for their in vitro antimicrobial, anti-biofilm and antioxidant activities to obtain a drug candidate in a lead-optimization process. From the tested compounds, those bearing benzothiazole (1b) and 6-methylpyridine (1d) moieties revealed anti-biofilm activity against E. coli ATCC 25922 at MBIC values of 625 µg/mL. Compound 1d exhibited the highest antioxidant capacity (~43%) in the in vitro assay using 1,1-diphenyl-2-picrylhydrazyl (DPPH). Considering the in vitro results, the highest anti-biofilm and antioxidant activities were obtained for compound 1d. Therefore, a reversed-phase high-performance liquid chromatography (RP-HPLC) method has been optimized and validated for the quantitative determination of compound 1d. The detection and quantitation limits were 0.0174 μg/mL and 0.0521 μg/mL, respectively. The R2 correlation coefficient of the LOQ and linearity curves were greater than 0.99, over the concentration range of 0.05 μg/mL-40 μg/mL. The precision and accuracy of the analytical method were within 98-102%, confirming that the method is suitable for the quantitative determination of compound 1d in routine quality control analyses. Evaluating the results, the promising potential of the new N-acyl thiourea derivatives bearing 6-methylpyridine moiety will be further investigated for developing agents with anti-biofilm and antioxidant activities.
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Affiliation(s)
- Roxana Roman
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, "Carol Davila" University of Medicine and Pharmacy, 6 Traian Vuia, 020956 Bucharest, Romania
| | - Lucia Pintilie
- National Institute for Chemical-Pharmaceutical Research & Development, 112 Vitan Av., 031299 Bucharest, Romania
| | - Miron Teodor Căproiu
- "C. D. Nenitzescu" Institute of Organic and Supramolecular Chemistry, 202B Splaiul Independenței, 060023 Bucharest, Romania
| | - Florea Dumitrașcu
- "C. D. Nenitzescu" Institute of Organic and Supramolecular Chemistry, 202B Splaiul Independenței, 060023 Bucharest, Romania
| | - Diana Camelia Nuță
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, "Carol Davila" University of Medicine and Pharmacy, 6 Traian Vuia, 020956 Bucharest, Romania
| | - Irina Zarafu
- Department of Organic Chemistry, Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, 4-12 Regina Elisabeta, 030018 Bucharest, Romania
| | - Petre Ioniță
- Department of Organic Chemistry, Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, 4-12 Regina Elisabeta, 030018 Bucharest, Romania
| | - Mariana Carmen Chifiriuc
- Department of Microbiology, Faculty of Biology & Research Institute of the University of Bucharest (ICUB), University of Bucharest, 060101 Bucharest, Romania
- Romanian Academy, 010071 Bucharest, Romania
| | - Cornel Chiriță
- Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, "Carol Davila" University of Medicine and Pharmacy, 6 Traian Vuia, 020956 Bucharest, Romania
| | - Alina Moroșan
- Department of Organic Chemistry "Costin Nenitescu", Faculty of Applied Chemistry and Materials Science, University POLITEHNICA of Bucharest, 011061 Bucharest, Romania
| | - Marcela Popa
- Department of Microbiology, Faculty of Biology & Research Institute of the University of Bucharest (ICUB), University of Bucharest, 060101 Bucharest, Romania
| | - Coralia Bleotu
- Department of Microbiology, Faculty of Biology & Research Institute of the University of Bucharest (ICUB), University of Bucharest, 060101 Bucharest, Romania
- Department of Celular and Molecular Pathology, Stefan S. Nicolau Institute of Virology, 285 Mihai Bravu Ave., 030304 Bucharest, Romania
- Academy of Romanian Scientists, Ilfov No. 3, 050044 Bucharest, Romania
| | - Carmen Limban
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, "Carol Davila" University of Medicine and Pharmacy, 6 Traian Vuia, 020956 Bucharest, Romania
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Pirvu LC, Neagu G, Albulescu A, Stefaniu A, Pintilie L. Potential Benefits of Dietary Plant Compounds on Normal and Tumor Brain Cells in Humans: In Silico and In Vitro Approaches. Int J Mol Sci 2023; 24:ijms24087404. [PMID: 37108565 PMCID: PMC10139435 DOI: 10.3390/ijms24087404] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 04/14/2023] [Accepted: 04/14/2023] [Indexed: 04/29/2023] Open
Abstract
Neuroblastoma can be accessed with compounds of larger sizes and wider polarities, which do not usually cross the blood-brain barrier. Clinical data indicate cases of spontaneous regression of neuroblastoma, suggesting a reversible point in the course of cell brain tumorigenesis. Dual specificity tyrosine-phosphorylation-regulated kinase2 (DYRK2) is a major molecular target in tumorigenesis, while curcumin was revealed to be a strong inhibitor of DYRK2 (PBD ID: 5ZTN). Methods: in silico studies by CLC Drug Discovery Workbench (CLC) and Molegro Virtual Docker (MVD) Software on 20 vegetal compounds from the human diet tested on 5ZTN against the native ligand curcumin, in comparison with anemonin. In vitro studies were conducted on two ethanolic extracts from Anemone nemorosa tested on normal and tumor human brain cell lines NHA and U87, compared with four phenolic acids (caffeic, ferulic, gentisic, and para-aminobenzoic/PABA). Conclusions: in silico studies revealed five dietary compounds (verbascoside, lariciresinol, pinoresinol, medioresinol, matairesinol) acting as stronger inhibitors of 5ZTN compared to the native ligand curcumin. In vitro studies indicated that caffeic acid has certain anti-proliferative effects on U87 and small benefits on NHA viability. A. nemorosa extracts indicated potential benefits on NHA viability, and likely dangerous effects on U87.
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Affiliation(s)
- Lucia Camelia Pirvu
- Department of Pharmaceutical Biotechnologies, National Institute of Chemical Pharmaceutical Research and Development-ICCF, 112 Vitan Av., 031299 Bucharest, Romania
| | - Georgeta Neagu
- Department of Pharmacology, National Institute of Chemical Pharmaceutical Research and Development-ICCF, 112 Vitan Av., 031299 Bucharest, Romania
| | - Adrian Albulescu
- Department of Pharmacology, National Institute of Chemical Pharmaceutical Research and Development-ICCF, 112 Vitan Av., 031299 Bucharest, Romania
- Stefan S. Nicolau Institute of Virology, 285 Mihai Bravu Av., 030304 Bucharest, Romania
| | - Amalia Stefaniu
- Department of Pharmaceutical Biotechnologies, National Institute of Chemical Pharmaceutical Research and Development-ICCF, 112 Vitan Av., 031299 Bucharest, Romania
| | - Lucia Pintilie
- Department of Synthesis of Bioactive Substances and Pharmaceutical Technologies, National Institute of Chemical Pharmaceutical Research and Development-ICCF, 112 Vitan Av., 031299 Bucharest, Romania
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Schroder V, Radu N, Cornea PC, Coman OA, Pirvu LC, Mohammed MSO, Stefaniu A, Pintilie L, Bostan M, Caramihai MD, Roman V. Studies Regarding the Antimicrobial Behavior of Clotrimazole and Limonene. Antibiotics (Basel) 2022; 11:antibiotics11121816. [PMID: 36551473 PMCID: PMC9774930 DOI: 10.3390/antibiotics11121816] [Citation(s) in RCA: 4] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/06/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022] Open
Abstract
The paper presents the results of the studies performed to establish the effect of the mixtures between limonene and clotrimazole against microbial pathogens involved in dermatological diseases, such as Candida albicans, Staphyloccocus aureus, and Escherichia coli. Preliminary data obtained from the studies performed in microplates revealed a possible synergism between the mixture of clotrimazole and limonene for Staphylococcus aureus. Studies performed "in silico" with programs such as CLC Drug Discovery Workbench and MOLEGRO Virtual Docker, gave favorable scores for docking each compound on a specific binding site for each microorganism. The tests performed for validation, with the clotrimazole (0.1%) and different sources of limonene (1.9% citrus essential oils), showed a synergistic effect on Staphylococcus aureus in the case of the mixtures between clotrimazole and the essential oils of Citrus reticulata or Citrus paradisi. The studies performed on Staphylococcus aureus MRSA showed a synergistic effect between clotrimazole and the essential oils obtained from Citrus bergamia, Citrus aurantium, or Citrus paradisi. In the case of Pseudomonas aeruginosa, essential oils and clotrimazole used alone did not exhibit antimicrobial activities, but the mixtures between clotrimazole and the essential oils of Citrus bergamia or Citrus sinensis exhibited a synergistic antimicrobial effect.
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Affiliation(s)
- Verginica Schroder
- Faculty of Pharmacy, University Ovidius of Constanta, 900527 Constanta, Romania
| | - Nicoleta Radu
- Faculty of Biotechnology, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 011464 Bucharest, Romania
- Department of Biotechnology, National Institute of Chemistry and Petrochemistry R&D of Bucharest, 060021 Bucharest, Romania
- Correspondence: (N.R.); (M.B.)
| | - Petruta Calina Cornea
- Faculty of Biotechnology, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 011464 Bucharest, Romania
| | - Oana Andreia Coman
- Faculty of Medicine, University of Medicine and Pharmacy Carol Davila of Bucharest, 020021 Bucharest, Romania
| | - Lucia Camelia Pirvu
- Department of Pharmaceutical Biotechnology, National Institute of Chemical Pharmaceutical R&D of Bucharest, 031299 Bucharest, Romania
| | - Mohammed Shaymaa Omar Mohammed
- Faculty of Biotechnology, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 011464 Bucharest, Romania
| | - Amalia Stefaniu
- Department of Pharmaceutical Biotechnology, National Institute of Chemical Pharmaceutical R&D of Bucharest, 031299 Bucharest, Romania
| | - Lucia Pintilie
- Department of Pharmaceutical Biotechnology, National Institute of Chemical Pharmaceutical R&D of Bucharest, 031299 Bucharest, Romania
| | - Marinela Bostan
- Department of Immunology, National Institute of Pathology and Biomedical Sciences R&D “Victor Babeș’’, 050096 Bucharest, Romania
- Center of Immunology, Institute of Virology Stefan S. Nicolau, 030304 Bucharest, Romania
- Correspondence: (N.R.); (M.B.)
| | - Mihai Dan Caramihai
- Faculty of Computer Sciences, Politehnica University of Bucharest, 060042 Bucharest, Romania
| | - Viviana Roman
- Center of Immunology, Institute of Virology Stefan S. Nicolau, 030304 Bucharest, Romania
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Pirvu L, Stefaniu A, Neagu G, Pintilie L. Studies on Anemone nemorosa L. extracts; polyphenols profile, antioxidant activity, and effects on Caco-2 cells by in vitro and in silico studies. OPEN CHEM 2022. [DOI: 10.1515/chem-2022-0137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
In this study, two polar extracts (aqueous and ethanolic) from the aerial part of Anemone nemorosa L. (dried plant) were assessed to reveal their polyphenols profile, antioxidant activity, cytotoxic, and antiproliferative activity on Caco-2 (ATCC-HTB-37) cell line. In silico studies on two key compounds, protoanemonin and anemonin, on four molecular targets – cyclooxygenase-1 and cyclooxygenase-2, and human tankyrase 1 and human tankyrase 2 in relation to human colon cancer cell development have also been achieved. The results are as follows: caffeic acid esters and quercetin glycosides, including (iso)rhamnetin derivates, are the major polyphenol compounds in wood anemone polar extracts; the two polar extracts indicated very strong antioxidant activity in the interval from 0.1 to 5 µg [GAE] per 1 mL sample (IC50 < 0.290 µg GAE/mL), and in vitro studies on Caco-2 cells have revealed their simultaneous stimulatory and protective activity exactly in the concentration area with the strongest antioxidant activity. In silico studies have revealed moderate inhibitory activity of the two key compounds, anemonin and protoanemonin, on the four molecular targets studied; it was concluded having particular benefits of the wood anemone polar extracts in managing postoperative intestinal recovery, and generally in regenerative medicine.
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Affiliation(s)
- Lucia Pirvu
- Department of Pharmaceutical Biotechnologies, National Institute of Chemical Pharmaceutical Research and Development , 112 Vitan Av., Sector 3 , Bucharest , Romania
| | - Amalia Stefaniu
- Department of Pharmaceutical Biotechnologies, National Institute of Chemical Pharmaceutical Research and Development , 112 Vitan Av., Sector 3 , Bucharest , Romania
- Department of Pharmacology, National Institute of Chemical Pharmaceutical Research and Development , 112 Vitan Av., Sector 3 , Bucharest , Romania
| | - Georgeta Neagu
- Department of Pharmacology, National Institute of Chemical Pharmaceutical Research and Development , 112 Vitan Av., Sector 3 , Bucharest , Romania
| | - Lucia Pintilie
- Department of Synthesis, Bioactive Substances and Pharmaceutical Technologies, National Institute of Chemical Pharmaceutical Research and Development , 112 Vitan Av., Sector 3 , Bucharest , Romania
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Mohapatra RK, Dhama K, Mishra S, Sarangi AK, Kandi V, Tiwari R, Pintilie L. The microbiota-related coinfections in COVID-19 patients: a real challenge. Beni Suef Univ J Basic Appl Sci 2021; 10:47. [PMID: 34458380 PMCID: PMC8380112 DOI: 10.1186/s43088-021-00134-7] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 07/29/2021] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the cause of ongoing global pandemic of coronavirus disease 2019 (COVID-19), has infected millions of people around the world, especially the elderly and immunocompromised individuals. The infection transmission rate is considered more rapid than other deadly pandemics and severe epidemics encountered earlier, such as Ebola, Zika, Influenza, Marburg, SARS, and MERS. The public health situation therefore is really at a challenging crossroads. MAIN BODY The internal and external and resident microbiota community is crucial in human health and is essential for immune responses. This community tends to be altered due to pathogenic infections which would lead to severity of the disease as it progresses. Few of these resident microflora become negatively active during infectious diseases leading to coinfection, especially the opportunistic pathogens. Once such a condition sets in, it is difficult to diagnose, treat, and manage COVID-19 in a patient. CONCLUSION This review highlights the various reported possible coinfections that arise in COVID-19 patients vis-à-vis other serious pathological conditions. The local immunity in lungs, nasal passages, oral cavity, and salivary glands are involved with different aspects of COVID-19 transmission and pathology. Also, the role of adaptive immune system is discussed at the site of infection to control the infection along with the proinflammatory cytokine therapy.
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Affiliation(s)
- Ranjan K. Mohapatra
- Department of Chemistry, Government College of Engineering, Keonjhar, Odisha 758002 India
| | - Kuldeep Dhama
- Division of Pathology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh 243122 India
| | - Snehasish Mishra
- School of Biotechnology, KIIT University, Bhubaneswar, Odisha 751024 India
| | - Ashish K. Sarangi
- Department of Chemistry, School of Applied Sciences, Centurion University of Technology and Management, Odisha, India
| | - Venkataramana Kandi
- Department of Microbiology, Prathima Institute of Medical Sciences, Karimnagar, Telangana India
| | - Ruchi Tiwari
- Department of Veterinary Microbiology and Immunology, College of Veterinary Sciences, Uttar Pradesh Pandit Deen Dayal Upadhyaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan Sansthan (DUVASU), Mathura, 281001 India
| | - Lucia Pintilie
- Department of Synthesis of Bioactive Substances and Pharmaceutical Technologies, National Institute for Chemical and Pharmaceutical Research and Development, Bucharest, Romania
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Stancu V, Galatanu A, Enculescu M, Onea M, Popescu B, Palade P, Aradoaie M, Ciobanu R, Pintilie L. Influences of Dispersions' Shapes and Processing in Magnetic Field on Thermal Conductibility of PDMS-Fe 3O 4 Composites. Materials (Basel) 2021; 14:3696. [PMID: 34279266 PMCID: PMC8269840 DOI: 10.3390/ma14133696] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 06/22/2021] [Accepted: 06/28/2021] [Indexed: 12/19/2022]
Abstract
Composites of magnetite (Fe3O4) nanoparticles dispersed in a polydimethylsiloxane (PDMS) matrix were prepared by a molding process. Two types of samples were obtained by free polymerization with randomly dispersed particles and by polymerization in an applied magnetic field. The magnetite nanoparticles were obtained from magnetic micrograins of acicular goethite (α-FeOOH) and spherical hematite (α-Fe2O3), as demonstrated by XRD measurements. The evaluation of morphological and compositional properties of the PDMS:Fe3O4 composites, performed by SEM and EDX, showed that the magnetic particles were uniformly distributed in the polymer matrix. Addition of magnetic dispersions promotes an increase of thermal conductivity compared with pristine PDMS, while further orienting the powders in a magnetic field during the polymerization process induces a decrease of the thermal conductivity compared with the un-oriented samples. The shape of the magnetic dispersions is an important factor, acicular dispersions providing a higher value for thermal conductivity compared with classic commercial powders with almost spherical shapes.
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Affiliation(s)
- V Stancu
- National Institute of Materials Physics, Atomistilor 405A, 077125 Magurele, Romania
| | - A Galatanu
- National Institute of Materials Physics, Atomistilor 405A, 077125 Magurele, Romania
| | - M Enculescu
- National Institute of Materials Physics, Atomistilor 405A, 077125 Magurele, Romania
| | - M Onea
- National Institute of Materials Physics, Atomistilor 405A, 077125 Magurele, Romania
- Faculty of Physics, University of Bucharest, Atomistilor 405, 077125 Magurele, Romania
| | - B Popescu
- National Institute of Materials Physics, Atomistilor 405A, 077125 Magurele, Romania
| | - P Palade
- National Institute of Materials Physics, Atomistilor 405A, 077125 Magurele, Romania
| | - M Aradoaie
- Department of Electrical Measurements and Materials, Faculty of Electrical Engineering, Technical University Gh. Asachi Iasi, Boulevard Profesor Dimitrie Mangeron 67, 70050 Iasi, Romania
| | - R Ciobanu
- Department of Electrical Measurements and Materials, Faculty of Electrical Engineering, Technical University Gh. Asachi Iasi, Boulevard Profesor Dimitrie Mangeron 67, 70050 Iasi, Romania
- All Green SRL, 8 G. Cosbuc Street, 700470 Iasi, Romania
| | - L Pintilie
- National Institute of Materials Physics, Atomistilor 405A, 077125 Magurele, Romania
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10
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Tănase CI, Drăghici C, Căproiu MT, Hanganu A, Borodi G, Maganu M, Gal E, Pintilie L. β-Ketophosphonates with Pentalenofuran Scaffolds Linked to the Ketone Group for the Synthesis of Prostaglandin Analogs. Int J Mol Sci 2021; 22:6787. [PMID: 34202639 PMCID: PMC8268005 DOI: 10.3390/ijms22136787] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/22/2021] [Accepted: 06/23/2021] [Indexed: 11/16/2022] Open
Abstract
β-Ketophosphonates with pentalenofurane fragments linked to the keto group were synthesized. The bulky pentalenofurane skeleton is expected to introduce more hindrance in the prostaglandin analogues of type III, greater than that obtained with the bicyclo[3.3.0]oct(a)ene fragments of prostaglandin analogues I and II, to slow down (retard) the inactivation of the prostaglandin analogues by oxidation of 15α-OH to the 15-keto group via the 15-PGDH pathway. Their synthesis was performed by a sequence of three high yield reactions, starting from the pentalenofurane alcohols 2, oxidation of alcohols to acids 3, esterification of acids 3 to methyl esters 4 and reaction of the esters 4 with lithium salt of dimethyl methanephosphonate at low temperature. The secondary compounds 6b and 6c were formed in small amounts in the oxidation reactions of 2b and 2c, and the NMR spectroscopy showed that their structure is that of an ester of the acid with the starting alcohol. Their molecular structures were confirmed by single crystal X-ray determination method for 6c and XRPD powder method for 6b.
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Affiliation(s)
- Constantin I. Tănase
- National Institute for Chemical-Pharmaceutical Research and Development-ICCF, 112 Vitan Av., 031299 Bucharest, Romania;
| | - Constantin Drăghici
- Organic Chemistry Center “C.D.Nenittescu”, 202B, Splaiul Independentei, 060023 Bucharest, Romania; (C.D.); (M.T.C.); (A.H.); (M.M.)
| | - Miron Teodor Căproiu
- Organic Chemistry Center “C.D.Nenittescu”, 202B, Splaiul Independentei, 060023 Bucharest, Romania; (C.D.); (M.T.C.); (A.H.); (M.M.)
| | - Anamaria Hanganu
- Organic Chemistry Center “C.D.Nenittescu”, 202B, Splaiul Independentei, 060023 Bucharest, Romania; (C.D.); (M.T.C.); (A.H.); (M.M.)
| | - Gheorghe Borodi
- National Institute for R&D of Isotopic and Molecular Technologies, 67-103 Donat, 400293 Cluj-Napoca, Romania;
| | - Maria Maganu
- Organic Chemistry Center “C.D.Nenittescu”, 202B, Splaiul Independentei, 060023 Bucharest, Romania; (C.D.); (M.T.C.); (A.H.); (M.M.)
| | - Emese Gal
- Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, Aranylános 11, 400012 Cluj-Napoca, Romania;
| | - Lucia Pintilie
- National Institute for Chemical-Pharmaceutical Research and Development-ICCF, 112 Vitan Av., 031299 Bucharest, Romania;
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Affiliation(s)
- Ranjan K. Mohapatra
- Department of Chemistry, Government College of Engineering, Keonjhar, Odisha, India
| | - Pradeep Kumar Das
- Department of Chemistry, N. C. (Autonomous) College, Jaipur, Odisha, India
| | - Lucia Pintilie
- Department of Synthesis of Bioactive Substances and Pharmaceutical Technologies, National Institute for Chemical & Pharmaceutical Research and Development, Bucharest, Romania
| | - Kuldeep Dhama
- Division of Pathology, ICAR-Indian Veterinary Research Institute, Bareilly, Uttar Pradesh, India
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12
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Azam M, Bitu MNA, Mohapatra RK, Al-Resayes SI, Pintilie L, Wabaidur SM, Alqahtani FF, Islam MS, Sarangi AK, Kudrat-E-Zahan M. Synthesis, characterization of Uranyl(VI), Th(IV), Zr(IV) mixed-ligand complexes with S-methyl-2-(4-methoxybenzylidine)dithiocarbazate and N-donor co-ligand, and their evaluation as antimicrobial agent. Journal of Saudi Chemical Society 2021. [DOI: 10.1016/j.jscs.2021.101207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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13
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Mohapatra RK, Perekhoda L, Azam M, Suleiman M, Sarangi AK, Semenets A, Pintilie L, Al-Resayes SI. Computational investigations of three main drugs and their comparison with synthesized compounds as potent inhibitors of SARS-CoV-2 main protease (M pro): DFT, QSAR, molecular docking, and in silico toxicity analysis. J King Saud Univ Sci 2021; 33:101315. [PMID: 33390681 PMCID: PMC7765764 DOI: 10.1016/j.jksus.2020.101315] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 12/15/2020] [Accepted: 12/17/2020] [Indexed: 05/28/2023]
Abstract
In this study, we examined five previously synthesized compounds and checked their binding affinity towards the SARS-CoV-2 main protease (Mpro) by molecular docking study, and compared the data with three FDA approved drugs, i.e., Remdesivir, Ivermectine and Hydroxychlorochine. In addition, we have investigated the docking study against the main protease of SARS-CoV-2 (Mpro) by using Autodock 4.2 software package. The results suggested that the investigated compounds have property to bind the active position of the protein as reported in approved drugs. Hence, further experimental studies are required. The formation of intermolecular interactions, negative values of scoring functions, free binding energy and the calculated binding constants confirmed that the studied compounds have significant affinity for the specified biotarget. These studied compounds were passed the drug-likeness criteria as suggested by calculating ADME data by SwissADME server. Moreover, the ADMET properties suggested that the investigated compounds to be orally active compounds in human. Furthermore, density functional computations (DFT) were executed by applying GAUSSIAN 09 suit program. In addition, Quantitative Structure-Activity Relationship (QSAR) was studied by applying HyperChem Professional 8.0.3 program.
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Affiliation(s)
- Ranjan K Mohapatra
- Department of Chemistry, Government College of Engineering, Keonjhar, Odisha 758002, India
| | - Lina Perekhoda
- Department of Medicinal Chemistry, National University of Pharmacy, Pushkinska Str. 53, Kharkiv 61002, Ukraine
| | - Mohammad Azam
- Department of Chemistry, College of Science, King Saud University, PO Box 2455, Riyadh 11451, Saudi Arabia
| | - Marharyta Suleiman
- Department of Medicinal Chemistry, National University of Pharmacy, Pushkinska Str. 53, Kharkiv 61002, Ukraine
| | - Ashish K Sarangi
- Department of Chemistry, School of Applied Sciences, Centurion University of Technology and Management, Odisha, India
| | - Anton Semenets
- Department of Medicinal Chemistry, National University of Pharmacy, Pushkinska Str. 53, Kharkiv 61002, Ukraine
| | - Lucia Pintilie
- Department of Synthesis of Bioactive Substances and Pharmaceutical Technologies, National Institute for Chemical & Pharmaceutical Research and Development, Bucharest, Romania
| | - Saud I Al-Resayes
- Department of Chemistry, College of Science, King Saud University, PO Box 2455, Riyadh 11451, Saudi Arabia
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Tănase C, Pintilie L, Tănase RE. Lactones in the Synthesis of Prostaglandins and Prostaglandin Analogs. Int J Mol Sci 2021; 22:1572. [PMID: 33557221 PMCID: PMC7913956 DOI: 10.3390/ijms22041572] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 01/26/2021] [Accepted: 01/28/2021] [Indexed: 01/21/2023] Open
Abstract
In the total stereo-controlled synthesis of natural prostaglandins (PGs) and their structural analogs, a vast class of compounds and drugs, known as the lactones, are encountered in a few key steps to build the final molecule, as: δ-lactones, γ-lactones, and 1,9-, 1,11-, and 1,15-macrolactones. After the synthesis of 1,9-PGF2α and 1,15-PGF2α lactones, many 1,15-lactones of E2, E3, F2, F3, A2, and A3 were found in the marine mollusc Tethys fimbria and the quest for understanding their biological role stimulated the research on their synthesis. Then 1,9-, 1,11-, and 1,15-PG lactones of the drugs were synthesized as an alternative to the corresponding esters, and the first part of the paper describes the methods used for their synthesis. The efficient Corey procedure for the synthesis of prostaglandins uses the key δ-lactone and γ-lactone intermediates with three or four stereocenters on the cyclopentane fragment to link the PG side chains. The paper describes the most used procedures for the synthesis of the milestone δ-Corey-lactones and γ-Corey-lactones, their improvements, and some new promising methods, such as interesting, new stereo-controlled and catalyzed enantioselective reactions, and methods based on the chemical/enzymatic resolution of the compounds in different steps of the sequences. The many uses of δ-lactones not only for the synthesis of γ-lactones, but also for obtaining 9β-halogen-PGs and halogen-substituted cyclopentane intermediates, as synthons for new 9β-PG analogs and future applications, are also discussed.
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Affiliation(s)
- Constantin Tănase
- Synthesis of Biologically Active Substances Department, National Institute for Chemical-Pharmaceutical Research and Development, 74373 Bucharest, Romania;
| | - Lucia Pintilie
- Synthesis of Biologically Active Substances Department, National Institute for Chemical-Pharmaceutical Research and Development, 74373 Bucharest, Romania;
| | - Raluca Elena Tănase
- Department of Mathematics, Angstrom Laboratory, Uppsala University, 751 06 Uppsala, Sweden;
- “Simion Stoilow” Institute of Mathematics of the Romanian Academy, 010702 Bucharest, Romania
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Sahu R, Mohapatra RK, Al-Resayes SI, Das D, Parhi PK, Rahman S, Pintilie L, Kumar M, Azam M, Ansari A. An efficient synthesis towards the core of Crinipellin: TD-DFT and docking studies. Journal of Saudi Chemical Society 2021. [DOI: 10.1016/j.jscs.2020.101193] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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16
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Pintilie L, Tanase C, Maganu M, Caproiu MT. Design, Synthesis, Molecular Docking and Antibacterial Screening of some Quinolone Compounds. Rev Chim 2020. [DOI: 10.37358/rc.20.11.8369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Some 6,8-dichloro-quinolone compounds were designed and synthesized; by comparing with 6-fluoro-8-chloro-quinolone compounds, the influence of the nature of the halogen atom from six position of the quinolone ring on the molecular properties and on the antimicrobial activity was studied. The DFT/B3LYP/6-311G* level of basis set was used for the computation of molecular structure of optimized compounds. The calculations of characteristics and molecular properties were performed using Spartan�14 Software from Wavefunction, Inc. Irvine, CA. The HOMO-LUMO energies and orbitals, global reactivity descriptors, various thermodynamic parameters, and dipole moment (i) were calculated to determine the molecular properties of quinolone compounds. Molecular docking studies were realized to identify and visualize the most likely interaction ligand (quinolone/fluoroquinolone compounds) with the protein receptor. The score and hydrogen bonds formed with the amino acids from group interaction atoms are used to predict the binding modes, the binding affinities, and the orientation of the docked quinolone/fluoroquinolone derivatives in the active site of the protein receptor. The protein-ligand complex was realized based on the X-ray structure of Bacillus cereus (PDB ID: 1VEN) using CLC Drug Discovery Workbench 2.4 software. The quinolone compounds were characterized by physical-chemical methods (elemental analysis, IR spectral analysis, 1H-NMR, 13C-NMR spectra, UV-Vis, thin layer chromatography) and by antimicrobial activity against some Gram-positive and Gram-negative microorganisms: Staphylococcus aureus, Bacillus cereus, Bacillus subtilis, Micrococcus luteus, Escherichia coli and Pseudomonas aeruginosa.
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Mohapatra RK, Pintilie L, Kandi V, Sarangi AK, Das D, Sahu R, Perekhoda L. The recent challenges of highly contagious COVID-19, causing respiratory infections: Symptoms, diagnosis, transmission, possible vaccines, animal models, and immunotherapy. Chem Biol Drug Des 2020. [PMID: 32654267 DOI: 10.1111/cbdd.v96.510.1111/cbdd.13761] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Abstract
COVID-19 is highly contagious pathogenic viral infection initiated from Wuhan seafood wholesale market of China on December 2019 and spread rapidly around the whole world due to onward transmission. This recent outbreak of novel coronavirus (CoV) was believed to be originated from bats and causing respiratory infections such as common cold, dry cough, fever, headache, dyspnea, pneumonia, and finally Severe Acute Respiratory Syndrome (SARS) in humans. For this widespread zoonotic virus, human-to-human transmission has resulted in nearly 83 lakh cases in 213 countries and territories with 4,50,686 deaths as on 19 June 2020. This review presents a report on the origin, transmission, symptoms, diagnosis, possible vaccines, animal models, and immunotherapy for this novel virus and will provide ample references for the researchers toward the ongoing development of therapeutic agents and vaccines and also preventing the spread of this disease.
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Affiliation(s)
- Ranjan K Mohapatra
- Department of Chemistry, Government College of Engineering, Keonjhar, Odisha, India
| | - Lucia Pintilie
- Department of Synthesis of Bioactive Substances and Pharmaceutical Technologies, National Institute for Chemical and Pharmaceutical Research and Development, Bucharest, Romania
| | - Venkataramana Kandi
- Department of Microbiology, Pratima Institute of Medical Sciences, Karimnagar, Hyderabad, India
| | - Ashish K Sarangi
- Department of Chemistry, School of Applied Sciences, Centurion University of Technology and Management, Odisha, India
| | - Debadutta Das
- Department of Chemistry, Sukanti Degree College, Subarnapur, Odisha, India
| | - Raghaba Sahu
- College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Lina Perekhoda
- Department of medicinal chemistry, National University of Pharmacy, Kharkiv, Ukraine
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Mohapatra RK, Pintilie L, Kandi V, Sarangi AK, Das D, Sahu R, Perekhoda L. The recent challenges of highly contagious COVID-19, causing respiratory infections: Symptoms, diagnosis, transmission, possible vaccines, animal models, and immunotherapy. Chem Biol Drug Des 2020; 96:1187-1208. [PMID: 32654267 PMCID: PMC7405220 DOI: 10.1111/cbdd.13761] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 06/20/2020] [Accepted: 06/28/2020] [Indexed: 01/07/2023]
Abstract
COVID-19 is highly contagious pathogenic viral infection initiated from Wuhan seafood wholesale market of China on December 2019 and spread rapidly around the whole world due to onward transmission. This recent outbreak of novel coronavirus (CoV) was believed to be originated from bats and causing respiratory infections such as common cold, dry cough, fever, headache, dyspnea, pneumonia, and finally Severe Acute Respiratory Syndrome (SARS) in humans. For this widespread zoonotic virus, human-to-human transmission has resulted in nearly 83 lakh cases in 213 countries and territories with 4,50,686 deaths as on 19 June 2020. This review presents a report on the origin, transmission, symptoms, diagnosis, possible vaccines, animal models, and immunotherapy for this novel virus and will provide ample references for the researchers toward the ongoing development of therapeutic agents and vaccines and also preventing the spread of this disease.
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Affiliation(s)
| | - Lucia Pintilie
- Department of Synthesis of Bioactive Substances and Pharmaceutical TechnologiesNational Institute for Chemical and Pharmaceutical Research and DevelopmentBucharestRomania
| | - Venkataramana Kandi
- Department of MicrobiologyPratima Institute of Medical SciencesKarimnagarHyderabadIndia
| | - Ashish K. Sarangi
- Department of ChemistrySchool of Applied Sciences, Centurion University of Technology and ManagementOdishaIndia
| | - Debadutta Das
- Department of ChemistrySukanti Degree CollegeSubarnapurOdishaIndia
| | - Raghaba Sahu
- College of PharmacySeoul National UniversitySeoulSouth Korea
| | - Lina Perekhoda
- Department of medicinal chemistryNational University of PharmacyKharkivUkraine
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El-Barasi NM, Miloud MM, El-ajaily MM, Mohapatra RK, Sarangi AK, Das D, Mahal A, Parhi PK, Pintilie L, Barik SR, Amin Bitu MN, Kudrat-E-Zahan M, Tabassum Z, Al-Resayes SI, Azam M. Synthesis, structural investigations and antimicrobial studies of hydrazone based ternary complexes with Cr(III), Fe(III) and La(III) ions. Journal of Saudi Chemical Society 2020. [DOI: 10.1016/j.jscs.2020.04.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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20
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Sarangi AK, Mahapatra BB, Mohapatra RK, Sethy SK, Das D, Pintilie L, Kudrat‐E‐Zahan M, Azam M, Meher H. Synthesis and characterization of some binuclear metal complexes with a pentadentate azodye ligand: An experimental and theoretical study. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5693] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Ashish Kumar Sarangi
- Department of Chemistry, School of Applied Sciences Centurion University of Technology and Management Odisha India
| | | | | | | | - Debadutta Das
- Department of Chemistry Sukanti Degree College Subarnapur Odisha India
| | - Lucia Pintilie
- Department of Synthesis of Bioactive Substances and Pharmaceutical Technologies National Institute for Chemical & Pharmaceutical Research and Development Bucharest Romania
| | | | - Mohammad Azam
- Department of Chemistry College of Science, King Saud University Riyadh Saudi Arabia
| | - Hemanta Meher
- School of Chemistry Sambalpur University Burla Odisha India
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Tanase CI, Pintilie L, Mihai E. A Molecular Docking of New 9β-Halogenated Prostaglandin Analogs with an Ester Group at C-6 Atom of the α-Side Chain. Rev Chim 2020. [DOI: 10.37358/rc.20.4.8048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Prostaglandins with cytoprotective activity were studied for a long time and a few PGE1 and PGE2 stable analogs were promoted as drugs: arbaprostil, enprostil, misoprostol and rioptostol. Nocloprost, a 9β-chlorine prostaglandin analog, has been also promoted as a cytoprotective drug; the succes with this compound stimulated the reserches, and many 9β- or 11β-substituted prostaglandins were synthesized and studied for their biological activity. In the same dirrection we previously synthesized new 9β-halogenated prostaglandins having also an ester group at the carbon atom 6. These compounds were now used in a molecular docking study to predict their potential cytoprotective (anti-ulcer) activity. The study has been done with CLC Drug Discovery Workbench 2.4. software and an oxidoreductase enzyme receptor, chosen from the Protein Data Bank, ID: 4KEW. Two recognized drugs, omeprazole (co-crystallized with the enzyme) and nocloprost were used as standard in the study. The 9β-halogenated prostaglandin analogs were finally docked. Nocloprost and all 9β-halogenated compounds had docking score greater than that of omeprazole. The majority of the 9β-halogenated analogs have a docking score even greater than that of nocloprost, indicating that these compounds could have potential cytoprotective activity. Correlations between docking score and substituents on the prostaglandin skeleton have been done.
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Limban C, Chifiriuc MC, Caproiu MT, Dumitrascu F, Ferbinteanu M, Pintilie L, Stefaniu A, Vlad IM, Bleotu C, Marutescu LG, Nuta DC. New Substituted Benzoylthiourea Derivatives: From Design to Antimicrobial Applications. Molecules 2020; 25:E1478. [PMID: 32218209 PMCID: PMC7180980 DOI: 10.3390/molecules25071478] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 03/18/2020] [Accepted: 03/20/2020] [Indexed: 12/17/2022] Open
Abstract
The increasing threat of antimicrobial resistance to all currently available therapeutic agents has urged the development of novel antimicrobials. In this context, a series of new benzoylthiourea derivatives substituted with one or more fluorine atoms and with the trifluoromethyl group have been tested, synthesized, and characterized by IR, NMR, CHNS and crystal X-ray diffraction. The molecular docking has provided information regarding the binding affinity and the orientation of the new compounds to Escherichia coli DNA gyrase B. The docking score predicted the antimicrobial activity of the studied compounds, especially against E. coli, which was further demonstrated experimentally against planktonic and biofilm embedded bacterial and fungal cells. The compounds bearing one fluorine atom on the phenyl ring have shown the best antibacterial effect, while those with three fluorine atoms exhibited the most intensive antifungal activity. All tested compounds exhibited antibiofilm activity, correlated with the trifluoromethyl substituent, most favorable in para position.
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Affiliation(s)
- Carmen Limban
- Department of Pharmaceutical Chemistry, “Carol Davila” University of Medicine and Pharmacy, 020956 Bucharest, Romania; (C.L.); (I.M.V.); (D.C.N.)
| | - Mariana Carmen Chifiriuc
- Department of Microbiology, Faculty of Biology & Research Institute of the University of Bucharest (ICUB), University of Bucharest, 060101 Bucharest, Romania;
| | - Miron Teodor Caproiu
- The Organic Chemistry Center of Romanian Academy “C. D. Neniţescu”, 060023 Bucharest, Romania; (M.T.C.); (F.D.)
| | - Florea Dumitrascu
- The Organic Chemistry Center of Romanian Academy “C. D. Neniţescu”, 060023 Bucharest, Romania; (M.T.C.); (F.D.)
| | - Marilena Ferbinteanu
- Inorganic Chemistry Department, Faculty of Chemistry, University of Bucharest, 020462 Bucharest, Romania;
| | - Lucia Pintilie
- National Institute of Chemical-Pharmaceutical Research & Development, 031299 Bucharest, Romania; (L.P.); (A.S.)
| | - Amalia Stefaniu
- National Institute of Chemical-Pharmaceutical Research & Development, 031299 Bucharest, Romania; (L.P.); (A.S.)
| | - Ilinca Margareta Vlad
- Department of Pharmaceutical Chemistry, “Carol Davila” University of Medicine and Pharmacy, 020956 Bucharest, Romania; (C.L.); (I.M.V.); (D.C.N.)
| | - Coralia Bleotu
- Stefan S. Nicolau Institute of Virology, Mihai Bravu 285, Bucharest, 030304, Romania;
| | - Luminita Gabriela Marutescu
- Department of Microbiology, Faculty of Biology & Research Institute of the University of Bucharest (ICUB), University of Bucharest, 060101 Bucharest, Romania;
| | - Diana Camelia Nuta
- Department of Pharmaceutical Chemistry, “Carol Davila” University of Medicine and Pharmacy, 020956 Bucharest, Romania; (C.L.); (I.M.V.); (D.C.N.)
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Chirila C, Botea M, Iuga A, Tomulescu AG, Balescu L, Galca AC, Boni AG, Leonat L, Pintilie I, Pintilie L. Carbon-based sprayed electrodes for pyroelectric applications. PLoS One 2019; 14:e0221108. [PMID: 31415643 PMCID: PMC6695221 DOI: 10.1371/journal.pone.0221108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 07/30/2019] [Indexed: 11/19/2022] Open
Abstract
A carbon-based layer was deposited by spraying on top of a ferroelectric layer grown by sol-gel on Si (001) substrate and its properties as electrode and absorber for pyroelectric detection were tested. It was found that the electric properties of the ferroelectric capacitor with top carbon-based sprayed electrode (CBSE) are comparable with those of the capacitors with standard top SrRuO3 (SRO)/Au electrode. Pyroelectric measurements show that the pyroelectric signal recorded on ferroelectric capacitors with top CBSE electrode is 2.5 times greater than for top SRO/Au electrode for low frequency range. The value of the pyroelectric coefficient was estimated to 9.73·10-4 C/m2K for CBSE electrodes and 3.36·10-4 C/m2K for SRO/Au respectively. The fabrication process of CBSE is of low cost, easy to implement and with high throughput making it attractive for manufacturing various devices like pyroelectric detector, thermal imaging, solar cells, etc.
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Affiliation(s)
- C. Chirila
- National Institute of Materials Physics, Magurele-Ilfov Romania
- * E-mail:
| | - M. Botea
- National Institute of Materials Physics, Magurele-Ilfov Romania
| | - A. Iuga
- National Institute of Materials Physics, Magurele-Ilfov Romania
| | - A. G. Tomulescu
- National Institute of Materials Physics, Magurele-Ilfov Romania
| | - L. Balescu
- National Institute of Materials Physics, Magurele-Ilfov Romania
| | - A. C. Galca
- National Institute of Materials Physics, Magurele-Ilfov Romania
| | - A. G. Boni
- National Institute of Materials Physics, Magurele-Ilfov Romania
| | - L. Leonat
- National Institute of Materials Physics, Magurele-Ilfov Romania
| | - I. Pintilie
- National Institute of Materials Physics, Magurele-Ilfov Romania
| | - L. Pintilie
- National Institute of Materials Physics, Magurele-Ilfov Romania
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Tănase CI, Drăghici C, Hanganu A, Pintilie L, Maganu M, Volobueva A, Sinegubova E, Zarubaev VV, Neyts J, Jochmans D, Slita AV. New HSV-1 Anti-Viral 1'-Homocarbocyclic Nucleoside Analogs with an Optically Active Substituted Bicyclo[2.2.1]Heptane Fragment as a Glycoside Moiety. Molecules 2019; 24:molecules24132446. [PMID: 31277334 PMCID: PMC6651170 DOI: 10.3390/molecules24132446] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 06/28/2019] [Accepted: 06/30/2019] [Indexed: 02/05/2023] Open
Abstract
New 1′-homocarbanucleoside analogs with an optically active substituted bicyclo[2.2.1]heptane skeleton as sugar moiety were synthesized. The pyrimidine analogs with uracil, 5-fluorouracil, thymine and cytosine and key intermediate with 6-chloropurine (5) as nucleobases were synthesized by a selective Mitsunobu reaction on the primary hydroxymethyl group in the presence of 5-endo-hydroxyl group. Adenine and 6-substituted adenine homonucleosides were obtained by the substitution of the 6-chlorine atom of the key intermediate 5 with ammonia and selected amines, and 6-methoxy- and 6-ethoxy substituted purine homonucleosides by reaction with the corresponding alkoxides. No derivatives appeared active against entero, yellow fever, chikungunya, and adeno type 1viruses. Two compounds (6j and 6d) had lower IC50 (15 ± 2 and 21 ± 4 µM) and compound 6f had an identical value of IC50 (28 ± 4 µM) to that of acyclovir, suggesting that the bicyclo[2.2.1]heptane skeleton could be further studied to find a candidate for sugar moiety of the nucleosides.
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Affiliation(s)
- Constantin I Tănase
- National Institute for Chemical-Pharmaceutical Research and Development, Department of bioactive substances and pharmaceutical technologies, 112 Vitan Av., 031299 Bucharest-3, Romania.
| | - Constantin Drăghici
- Organic Chemistry Center "C.D.Nenitescu", Spectroscopy Laboratory, 202 B Splaiul Independentei, 060023 Bucharest, Romania
| | - Anamaria Hanganu
- Organic Chemistry Center "C.D.Nenitescu", Spectroscopy Laboratory, 202 B Splaiul Independentei, 060023 Bucharest, Romania
| | - Lucia Pintilie
- National Institute for Chemical-Pharmaceutical Research and Development, Department of bioactive substances and pharmaceutical technologies, 112 Vitan Av., 031299 Bucharest-3, Romania
| | - Maria Maganu
- Organic Chemistry Center "C.D.Nenitescu", Spectroscopy Laboratory, 202 B Splaiul Independentei, 060023 Bucharest, Romania
| | - Alexandrina Volobueva
- Department of Virology, Pasteur Institute of Epidemiology and Microbiology, 197101 St. Petersburg, Russia
| | - Ekaterina Sinegubova
- Department of Virology, Pasteur Institute of Epidemiology and Microbiology, 197101 St. Petersburg, Russia
| | - Vladimir V Zarubaev
- Department of Virology, Pasteur Institute of Epidemiology and Microbiology, 197101 St. Petersburg, Russia
| | - Johan Neyts
- KU Leuven Department of Micobiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Herestraat 49, BE-3000 Leuven, Belgium
| | - Dirk Jochmans
- KU Leuven Department of Micobiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Herestraat 49, BE-3000 Leuven, Belgium
| | - Alexander V Slita
- KU Leuven Department of Micobiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Herestraat 49, BE-3000 Leuven, Belgium
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Razus AC, Birzan L, Cristea M, Tecuceanu V, Draghici C, Hanganu A, Maganu M, Pintilie L, Ungureanu EM. New (azulen-1-yldiazenyl)-heteroaromatic Compounds Containing 1,2,5-thiadiazol-3-yl Moieties. Rev Chim 2019. [DOI: 10.37358/rc.19.5.7162] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
(E)-2-(Azulen-1-yldiazenyl)-1,3,4-thiadiazoles, unsubstituted or substituted either at azulen-1-yl moiety or at 5-position of thiadiazole ring were synthesized. Among the acids used as diazotization medium, dichloroacetic acid was the best choice. In several cases the by-products such as thioether 9 were isolated along with the normal coupling derivatives. The generated products were characterized and their MS and UV-vis spectra discussed. A computational study on (E)-2-(azulen-1-yldiazenyl)-1,3,4-thiadiazoles was undertaken based on density functional theory (DFT) to determine frontier orbital energies and other physical properties. The absorption maxima and the basicity of the new compounds are close to those of the corresponding diazenes containing thiazole, previously described. They have brick color in neutral medium and violet in strong acidic solutions. The redox potentials were also determined remarking the influence of the substituents on these potentials.
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26
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Pintilie L, Stefaniu A, Negut C, Tanase C, Caproiu MT. Design and Synthesis of the Candesartan Key Intermediate. Rev Chim 2019. [DOI: 10.37358/rc.18.12.6767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
This paper presents experimental data regarding the synthesis and structural characterization by: 1H-NMR, 13C-NMR, IR spectral analysis, melting point and thin layer chromatography of the candesartan key intermediate: methyl 2-[(tert-butoxycarbonyl)amino]-3-nitrobenzoate. In addition, a computational study of predicted molecular parameters, vibrational wavenumbers, frontier molecular orbitals energy diagram, molecular electrostatic potential map and other electronic distributions maps using restricted hybrid HF-DFT SCF calculation has been performed for obtaining the most stable conformer. For the most Stable conformer has been made a series of DFT calculations using the B3LYP levels using the 6-31G * basis set.
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27
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Tănase CI, Cocu F, Drăghici C, Hanganu A, Pintilie L, Maganu M, Munteanu CVA, Shova S. Correction: Secondary compounds in the catalytic hydrogenation of enone and allylic alcohol prostaglandin intermediates: isolation, characterization, and X-ray crystallography. NEW J CHEM 2019. [DOI: 10.1039/c9nj90062d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Correction for ‘Secondary compounds in the catalytic hydrogenation of enone and allylic alcohol prostaglandin intermediates: isolation, characterization, and X-ray crystallography’ by Constantin I. Tănase et al., New J. Chem., 2019, DOI: 10.1039/c9nj01186b.
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Affiliation(s)
- Constantin I. Tănase
- National Institute for Chemical-Pharmaceutical Research and Development
- Bucharest-3
- Romania
| | - Florea Cocu
- National Institute for Chemical-Pharmaceutical Research and Development
- Bucharest-3
- Romania
| | | | | | - Lucia Pintilie
- National Institute for Chemical-Pharmaceutical Research and Development
- Bucharest-3
- Romania
| | - Maria Maganu
- Organic Chemistry Center “C.D.Nenitescu”
- 060023 Bucharest
- Romania
| | | | - Sergiu Shova
- Institute of Macromolecular Chemistry “Petru Poni”
- 700478 Iasi
- Romania
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Tănase CI, Cocu F, Drăghici C, Hanganu A, Pintilie L, Maganu M, Munteanu CVA, Shova S. Secondary compounds in the catalytic hydrogenation of enone and allylic alcohol prostaglandin intermediates: isolation, characterization, and X-ray crystallography. NEW J CHEM 2019. [DOI: 10.1039/c9nj01186b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydrogenation of the double bond in the ω-side chain of prostaglandin intermediates: conditions to increase the yield and minimize the formation of secondary compounds.
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Affiliation(s)
- Constantin I. Tănase
- National Institute for Chemical-Pharmaceutical Research and Development
- Bucharest-3
- Romania
| | - Florea Cocu
- National Institute for Chemical-Pharmaceutical Research and Development
- Bucharest-3
- Romania
| | | | | | - Lucia Pintilie
- National Institute for Chemical-Pharmaceutical Research and Development
- Bucharest-3
- Romania
| | - Maria Maganu
- Organic Chemistry Center “C.D.Nenitescu”
- 060023 Bucharest
- Romania
| | | | - Sergiu Shova
- Institute of Macromolecular Chemistry “Petru Poni”
- 700478 Iasi
- Romania
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Abstract
A series of oxazolidinone compounds have been obtained and characterized by physico-chemical methods and antimicrobial activity against Staphylococcus Aureus ATCC 6538. For the synthesized compounds have been performed calculations of characteristics and molecular properties, using Spartan 14 Software from Wavefunction, Inc. Irvine, CA. and molecular docking studies using CLC Drug Discovery Workbench 2.4 software, to identify and visualize the most likely interaction ligand (oxazolidinone derivatives) with the receptor protein.
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Abstract
In this paper we present an efficient procedure for obtaining ether-protected bicyclo[2.2.1]heptane amines in six steps, from an optically active keto-alcohol norbornane compound, for building the heterocyclic bases of pyrimidine and purine constrained nucleosides. Trityl as protecting group makes it possible to isolate 5-endo-compounds in pure form by selective crystallization, and to isolate the intermediates in the next 3 steps of the reaction by crystallization. With TBDMS, all compounds were obtained as oil. The direct selective reduction of the keto-alcohol norbornane compound gave the pure 5-endo-diol 4d in high yield, which was then selectively protected at the primary hydroxyl with a trityl group; the next steps are similar for obtaining the trityl-protected bicyclo[2.2.1]heptane amine. The azide intermediates are valuable intermediates for click chemistry.
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31
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Pirvu L, Stefaniu A, Neagu G, Albu B, Pintilie L. In Vitro Cytotoxic and Antiproliferative Activity of Cydonia oblonga flower petals, leaf and fruit pellet ethanolic extracts. Docking simulation of the active flavonoids on anti-apoptotic protein Bcl-2. OPEN CHEM 2018. [DOI: 10.1515/chem-2018-0062] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
AbstractThis study aimed to compare in vitro cell cytotoxicity and antiproliferative potency of three standardized ethanolic extracts (5mg GAE/mL sample) from quince flower petals, leaves and fruit pellet on four cell lines (L-929, and HepG2, Caco-2 and BT-20 respectively). Comparative analytical qualitative studies (HPTLC) indicated that if quince leaf extracts (Col40) mainly contain quercetin and kaempferol derivates, the flower petal extracts (Cof40) contain caffeoylquinic acid derivates, while the fruit pellet extracts (Cop40) are comprised of quercetin and caffeoylquinic acid derivates. Pharmacological studies demonstrated the lack of toxicity of test extracts; the most important antiproliferative effects were observed on the hepatic cancer cell line HepG2 (up to 75%, 53% and 70% inhibition in the case of Col40, Cof40 and Cop40 test extracts), followed by the colon cancer cell line Caco-2 (up to 69%, 77% and 40% inhibition) and breast cancer cell line BT-20 (up to 54%, 61% and 19% inhibition). The docking simulations on hyperoside, isoquercitrin, astragalin, and quercetin and kaempferol compared to the synthetic co-crystallized LI0 A1000 ligand (a strong inhibitor of anti-apoptotic protein Bcl-2) indicated astragalin as the most feasible protein inhibitor, but quercetin and kaempferol respected all the parameters involved in the Lipinski rule, making them the most promising antiproliferative candidates.
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Affiliation(s)
- Lucia Pirvu
- National Institute of Chemical Pharmaceutical Research and Development (ICCF), 112 Vitan Road, Sector 3, Bucharest, Romania
- Department of Pharmaceutical Biotechnologies, Bucharest, Romania
| | - Amalia Stefaniu
- National Institute of Chemical Pharmaceutical Research and Development (ICCF), 112 Vitan Road, Sector 3, Bucharest, Romania
- Department of Pharmaceutical Biotechnologies, Bucharest, Romania
| | - Georgeta Neagu
- National Institute of Chemical Pharmaceutical Research and Development (ICCF), 112 Vitan Road, Sector 3, Bucharest, Romania
- Department of Pharmaceutical Biotechnologies, Bucharest, Romania
- Department of Pharmacology, Bucharest, Romania
| | - Bujor Albu
- National Institute of Chemical Pharmaceutical Research and Development (ICCF), 112 Vitan Road, Sector 3, Bucharest, Romania
- Department of Pharmaceutical Biotechnologies, Bucharest, Romania
- Department of Physical Chemical Analysis and Quality Control, Bucharest, Romania
| | - Lucia Pintilie
- National Institute of Chemical Pharmaceutical Research and Development (ICCF), 112 Vitan Road, Sector 3, Bucharest, Romania
- Department of Pharmaceutical Biotechnologies, Bucharest, Romania
- Department on Synthesis and Fine Chemicals, Bucharest, Romania
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32
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Negut C, Pintilie L, Tanase C, Udeanu DI, Draghici C, Munteanu C, Morosan E. Oleic Acid Amides With Potential Pharmacological Effects in the Overweight Treatment. Rev Chim 2018. [DOI: 10.37358/rc.18.4.6201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Fatty acid amide analogues were synthesized from oleic acid, activated by 1,1�-carbonildiimidazole to oleoylimidazole and amines, and characterized by IR, MS, 1H- and 13C-NMR spectra. The compounds were investigated for their influence on body weight and food-intake effects on an obesity-induced mouse model.
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Pintilie L, Stefaniu A, Nicu AI, Maganu M, Caproiu MT. Design, Synthesis and Docking Studies of Some Novel Fluoroquinolone Compounds with Antibacterial Activity. Rev Chim 2018. [DOI: 10.37358/rc.18.4.6207] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A new series of fluoroquinolone compounds have been obtained by Gould-Jacobs method. The compounds have been characterized by physic-chemical methods (elemental analysis, FTIR, NMR, UV-Vis) and by antimicrobial activity against Gram-positive and Gram-negative microorganisms. For the synthesized compounds have been performed calculations of characteristics and molecular properties, using Spartan�14 Software from Wavefunction, Inc. Irvine, CA. and molecular docking studies using CLC Drug Discovery Workbench 2.4 software, to identify and visualize the most likely interaction ligand (fluoroquinolone) with the receptor protein.
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34
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Tanase CI, Draghici C, Pintilie L, Negut C. Oxymercuration-demercuration of(�)-(1alfa,3 alfa,3a beta,6a beta)-1,2,3,3a,4,6a-hexahydro-1,3-pentalenedimethanol Dibenzoate. Rev Chim 2018. [DOI: 10.37358/rc.18.3.6144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Oxymercuration of (�)-(1a,3a,3ab,6ab)-1,2,3,3a,4,6a-hexahydro-1,3-pentalenedimethanol dibenzoate 1 was performed with mercuric tetrafluoroborate alone, in the presence of tetrafluoroboric acid and with tetrafluoroboric acid + sodium acetate and demercuration with sodium borohydride in 3N NaOH. The hydration of the alkene was selective toward the symmetric alcohol at short time, but at prolonged time, the symmetric and un-symmetric alcohols were obtained in a near 1:1 ratio. Anyway, the oxymercuration-demercuration of alkene 1 is a slow hydration reaction.
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Stefaniu A, Pop MD, Arnold GL, Birzan L, Pintilie L, Diacu E, Ungureanu EM. DFT calculations and electrochemical studies on azulene ligands for heavy metal ions detection using chemically modified electrodes. J Electrochem Sci Eng 2018. [DOI: 10.5599/jese.475] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A computational study on three related derivatives of 5-[(azulen-1-yl)methylene]-2-thioxoimidazolidin-4-one was conducted using density functional theory by calculating a series of molecular descriptors and properties of their optimized geometries (electrostatic and local ionization potentials, molecular frontier orbitals, etc.). Thermodynamic properties (zero-point energy, enthalpy, constant volume heat capacity, entropy and Gibbs energy) for these derivatives have been calculated and related to ligands electrochemical behavior. Reduction and oxidation potentials have been correlated to their calculated energy levels for LUMO and HOMO orbitals. Chemically modified electrodes based on these derivatives have been tested in view of heavy metal ions recognition, and their detection limits have been correlated to the calculated values of electron affinity.
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36
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Apostol NG, Lungu GA, Bucur IC, Tache CA, Hrib L, Pintilie L, Macovei D, Teodorescu CM. Non-interacting, sp2 carbon on a ferroelectric lead zirco-titanate: towards graphene synthesis on ferroelectrics in ultrahigh vacuum. RSC Adv 2016. [DOI: 10.1039/c6ra12910b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Carbon layers grown on lead zirco-titanate (PZT) weakly interact with the substrate and exhibit nearly two dimensional character, up to a carbon surface density approaching that of graphene.
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Affiliation(s)
- N. G. Apostol
- National Institute of Materials Physics
- 077125 Măgurele
- Romania
| | - G. A. Lungu
- National Institute of Materials Physics
- 077125 Măgurele
- Romania
| | - I. C. Bucur
- National Institute of Materials Physics
- 077125 Măgurele
- Romania
- University of Bucharest
- Faculty of Physics
| | - C. A. Tache
- University of Trieste
- Department of Physics
- 34127 Trieste
- Italy
| | - L. Hrib
- National Institute of Materials Physics
- 077125 Măgurele
- Romania
| | - L. Pintilie
- National Institute of Materials Physics
- 077125 Măgurele
- Romania
| | - D. Macovei
- National Institute of Materials Physics
- 077125 Măgurele
- Romania
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Tyunina M, Pintilie I, Iuga A, Stratulat MS, Pintilie L. Frustration of ferroelectricity in epitaxial film of relaxor ferroelectric PbSc1/2Nb1/2O3. J Phys Condens Matter 2014; 26:325901. [PMID: 25030065 DOI: 10.1088/0953-8984/26/32/325901] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Relaxor-to-ferroelectric transformations induced by varying electric fields and temperatures are studied experimentally in acube-on-cubetype epitaxial PbSc(1/2)Nb(1/2)O3 film grown on La(1/2)Sr(1/2)CoO3/MgO(001). Dielectric response, quasi-static and dynamic polarization, and dynamic current-voltage characteristics evidence the absence of spontaneous relaxor-to-ferroelectric transition. The electricfield-induced transformation from a glass-like relaxor state to a new dynamic polar state is detected at low temperatures below 100 K only. The frustration of ferroelectricity is discussed in relation to orientational anisotropy of the dipolar system in the epitaxial (001) film.
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Affiliation(s)
- M Tyunina
- Microelectronics and Materials Physics Laboratories, University of Oulu, PO Box 4500, FI-90014 Oulunyliopisto, Finland
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Le Febvrier A, Galca AC, Corredores Y, Députier S, Bouquet V, Demange V, Castel X, Sauleau R, Lefort R, Zhang LY, Tanné G, Pintilie L, Guilloux-Viry M. Structural, optical, and dielectric properties of Bi(1.5-x)Zn(0.92-y)Nb(1.5)O(6.92-δ) thin films grown by PLD on R-plane sapphire and LaAlO3 substrates. ACS Appl Mater Interfaces 2012; 4:5227-5233. [PMID: 22994246 DOI: 10.1021/am301152r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Bi(1.5-x)Zn(0.92-y)Nb(1.5)O(6.92-δ) thin films have the potential to be implemented in microwave devices. This work aims to establish the effect of the substrate and of the grain size on the optical and dielectric properties. Bi(1.5-x)Zn(0.92-y)Nb(1.5)O(6.92-δ) thin films were grown at 700 °C via pulsed-laser deposition on R-plane sapphire and (100)(pc) LaAlO(3) substrates at various oxygen pressures (30, 50, and 70 Pa). The structure, morphology, dielectric and optical properties were investigated. Despite bismuth and zinc deficiencies, with respect to the Bi(1.5)Zn(0.92)Nb(1.5)O(6.92) stoichiometry, the films show the expected cubic pyrochlore structure with a (100) epitaxial-like growth. Different morphologies and related optical and dielectric properties were achieved, depending on the substrate and the oxygen pressure. In contrast to thin films grown on (100)(pc) LaAlO(3), the films deposited on R-plane sapphire are characterized by a graded refractive index along the layer thickness. The refractive index (n) at 630 nm and the relative permittivity (ε(r)) measured at 10 GHz increase with the grain size: on sapphire, n varies from 2.29 to 2.39 and ε(r) varies from 85 to 135, when the grain size increases from 37 nm to 77 nm. On the basis of this trend, visible ellipsometry can be used to probe the characteristics in the microwave range quickly, nondestructively, and at a low cost.
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Affiliation(s)
- A Le Febvrier
- Institut des Sciences Chimiques de Rennes, UMR-CNRS 6226, Université de Rennes 1, 263 av. Gal Leclerc, 35042 Rennes, France
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Misirlioglu IB, Pintilie L, Alexe M, Hesse D. Influence of long-range dipolar interactions on the phase stability and hysteresis shapes of ferroelectric and antiferroelectric multilayers. J Mater Sci 2009; 44:5354-5363. [PMID: 36039189 PMCID: PMC9403632 DOI: 10.1007/s10853-009-3451-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2009] [Accepted: 03/30/2009] [Indexed: 06/15/2023]
Abstract
Phase transition and field driven hysteresis evolution of a two-dimensional Ising grid consisting of ferroelectric-antiferroelectric multilayers that take into account the long range dipolar interactions were simulated by a Monte-Carlo method. Simulations were carried out for a 1 + 1 bilayer and a 5 + 5 superlattice. Phase stabilities of components comprising the structures with an electrostatic-like coupling term were also studied. An electrostatic-like coupling, in the absence of an applied field, can drive the ferroelectric layers toward 180° domains with very flat domain interfaces mainly due to the competition between this term and the dipole-dipole interaction. The antiferroelectric layers do not undergo an antiferroelectric-to-ferroelectric transition under the influence of an electrostatic-like coupling between layers as the ferroelectric layer splits into periodic domains at the expense of the domain wall energy. The long-range interactions become significant near the interfaces. For high periodicity structures with several interfaces, the interlayer long-range interactions substantially impact the configuration of the ferroelectric layers while the antiferroelectric layers remain quite stable unless these layers are near the Neel temperature. In systems investigated with several interfaces, the hysteresis loops do not exhibit a clear presence of antiferroelectricity that could be expected in the presence of anti-parallel dipoles, i.e., the switching takes place abruptly. Some recent experimental observations in ferroelectric-antiferroelectric multilayers are discussed where we conclude that the different electrical properties of bilayers and superlattices are not only due to strain effects alone but also due to long-range interactions. The latter manifests itself particularly in superlattices where layers are periodically exposed to each other at the interfaces.
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Affiliation(s)
- I. B. Misirlioglu
- Faculty of Engineering and Natural Sciences, Sabanci University, Tuzla/Orhanli, Istanbul, 34956 Turkey
| | - L. Pintilie
- NIMP, P.O. Box MG-7, Bucharest-Magurele, 077125 Romania
| | - M. Alexe
- Max Planck Institute of Microstructure Physics, Weinberg 2, Halle, 06120 Germany
| | - D. Hesse
- Max Planck Institute of Microstructure Physics, Weinberg 2, Halle, 06120 Germany
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Abstract
This paper presents results of three QSAR (Quantitative Structure Activity Relationship) studies realized with the PRECLAV computer program. The database we used contains initially 100 derivatives of 3-carboxy-4-quinolone. The dependent property is bactericidal activity against Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa. A specific criterion identifies the outlier molecules in the calibration set. Two molecules are identified as �possible outliers for lead hopping�. After the elimination of outliers, we obtained: N = 77 / 86 / 84, s = 0.2904 / 0.3583 / 0.2993, r2 = 0.8850 / 0.7943 / 0.8645, F = 91.1 / 37.6 / 82.9 and r2CV = 0.8415 / 0.7337 / 0.8415. The bactericidal activity against the three studied bacteria was favored by the presence of saturated C substituted (hetero)cycles, by the presence of certain groups (-F, unconjugated -NH/-NH2) and by a non-balanced molecular shape. The bactericidal activity was disfavored by the presence of certain chemical groups (-NO2, -C6H4, -CO-) and of the triazole cycle. The lipophilic/hydrophilic feature of quinolones has little impact upon bactericidal activity.
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