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Geetha D, Anil Kumar HG, Mohan Kumar TM, Srinivasa GR, Basavaraju YB, Yathirajan HS, Parkin S. Synthesis, crystal structure and Hirshfeld surface analysis of N-(4-fluoro-phen-yl)- N-isopropyl-2-(methyl-sulfon-yl)acetamide. Acta Crystallogr E Crystallogr Commun 2023; 79:512-515. [PMID: 37151839 PMCID: PMC10162089 DOI: 10.1107/s2056989023003675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 04/22/2023] [Indexed: 05/09/2023]
Abstract
The synthesis and crystal structure of the title compound, C12H16FNO3S, which is related to the herbicide flufenacet, are presented. The dihedral angle between the amide group and the fluorinated benzene ring is 87.30 (5)° and the N-C-C-S torsion angle defining the orientation of the methyl-sulfonyl substituent relative to the amide group is 106.91 (11)°. In the crystal, inversion-related mol-ecules form dimers as a result of pairwise C-H⋯O hydrogen bonds, which appear to be reinforced by short O⋯π contacts [O⋯Cg = 3.0643 (11) Å]. A Hirshfeld surface analysis was used to qu-antify the various types of inter-molecular contacts, which are dominated by H atoms.
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Affiliation(s)
- Doreswamy Geetha
- Department of Studies in Chemistry, University of Mysore, Manasagangotri, Mysuru-570 006, India
| | - Haleyur G. Anil Kumar
- Department of Science and Humanities, PES University, BSK III Stage, Bengaluru-560 085, India
| | - Thaluru M. Mohan Kumar
- Department of Chemistry, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Bengaluru-560 035, India
| | | | - Yeriyur B. Basavaraju
- Department of Studies in Chemistry, University of Mysore, Manasagangotri, Mysuru-570 006, India
- Correspondence e-mail: ,
| | - Hemmige S. Yathirajan
- Department of Studies in Chemistry, University of Mysore, Manasagangotri, Mysuru-570 006, India
- Correspondence e-mail: ,
| | - Sean Parkin
- Department of Chemistry, University of Kentucky, Lexington, KY, 40506-0055, USA
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2
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Asim S, Mansha A, Aslam S, Shahzad A. Study of Interactions Between 3-benzoyl-4-hydroxy-2-methyl-2H-1, 2-benzothiazine and Human DNA by Theoretical, Spectroscopic and Viscometric measurements. J Fluoresc 2023; 33:311-326. [PMID: 36414920 DOI: 10.1007/s10895-022-03045-7] [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: 09/23/2022] [Accepted: 10/15/2022] [Indexed: 11/24/2022]
Abstract
From the last few years mode of interactions between drugs and DNA is an attractive research area as it bridges chemistry, molecular biology and medicinal science. Interactions between small heterocyclic molecules and human DNA is a noteworthy feature in pharmacology for investigation of drugs mechanism and designing of more effective and target specific drugs with fewer side effects. The present research work focuses on the theoretical investigations of 3-benzoyl-4-hydroxy-2-methyl-2H-1, 2-benzothiazine (SASA) by using Gaussian (16 W) software to predict optimized geometry, HOMO-LUMO gap, bond length, bond angle, dihedral angle, electronic and vibrational spectra. Possible reaction site observed in SASA was C7, C9 and C18 as these atoms show maximum charge density. Later the interactions of SASA with human DNA was explored spectroscopic investigations and viscometric investigations at physiological buffers of pH of 4.7 (stomach pH) and 7.4 (blood pH) respectively. Maximum absorbance between SASA-DNA complex was observed in buffer solution of pH 3.4 at wavelength of 370 nm, whereas at 7.4 has maximim absorbance between. Spectroscopic results reflects the bathochromic and hyperchromic shift succeeding the addition of human DNA. During viscosity measurement, intercalation and electrostatic mode of interaction were detected at low and high concentration of drug in solution respectively. Increase in the value of rate constant was observed with the increase in concentration of drug. Larger values of rate constant were observed at pH 7.4 in comparison to pH 3.5. Rate constant, thermodynamic parameters and viscometric analysis prefers the intake of SASA via blood.
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Affiliation(s)
- Sadia Asim
- Department of Chemistry, Government College Women University, Faisalabad, Pakistan.
| | - Asim Mansha
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Sana Aslam
- Department of Chemistry, Government College Women University, Faisalabad, Pakistan
| | - Alina Shahzad
- Department of Chemistry, Government College Women University, Faisalabad, Pakistan
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3
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Casting light on synthetic, SC-XRD and quantum mechanical studies for 2,1-benzothiazine based bis-adducts. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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4
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Aslam S, Ali HS, Ahmad M, Mansha A, Ali N, Khan S, Naqvi SAR, Khalid Z, Asim S, Parvez M, Khalid M. A combined experimental and theoretical study of alkyl 2-(3-benzoyl-4‑hydroxy-1,1-dioxido-2H-benzo[e][1,2]thiazin-2-yl)acetates: Synthesis, X-ray crystallography and DFT. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132671] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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5
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Vo NB, Ngo QA. Synthesis, Anti‐inflammatory and Cytotoxic Activity of Novel Pyrazolo[4,3‐
c
][2,1]benzothiazine 4,4‐dioxide Derivatives. J Heterocycl Chem 2022. [DOI: 10.1002/jhet.4521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ngoc Binh Vo
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay Hanoi Vietnam
- Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay Hanoi Vietnam
| | - Quoc Anh Ngo
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay Hanoi Vietnam
- Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay Hanoi Vietnam
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Taj S, Ahmad M, Ashfaq UA. Exploring of novel 4-hydroxy-2H-benzo[e][1,2]thiazine-3-carbohydrazide 1,1-dioxide derivative as a dual inhibitor of α-glucosidase and α-amylase: Molecular docking, biochemical, enzyme kinetic and in-vivo mouse model study. Int J Biol Macromol 2022; 207:507-521. [PMID: 35276296 DOI: 10.1016/j.ijbiomac.2022.03.023] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 02/10/2022] [Accepted: 03/05/2022] [Indexed: 12/23/2022]
Abstract
Diabetes mellitus (DM) is a metabolic disorder that leads to hyperglycemia due to improper insulin secretion. The study aims to investigate the anti-diabetic potential of benzothiazine derivatives. Molecular docking and Molecular Dynamics simulation study revealed that Compound S6 (4-hydroxy-2H-benzo[e][1,2]thiazine-3-carbohydrazide 1,1-dioxide) and S7 (4-Hydroxy-2-methyl-2H-1,2-benzothiazine-3-carbohydrazide 1,1-dioxide) had less conformational changes during MD simulation analysis at 100 ns. Compound S6 and S7 showed potent activity with IC50 values of 5.93 μM, 6.91 μM and 75.17, 29.10 μM for α-glucosidase and α-amylase respectively and competitive type of inhibition was observed during enzyme kinetic study with a low value of Ki and Ki' for α-glucosidase and α-amylase, respectively. S6 has the lowest Ki (0.0736) and Ki' (-0.0982) for α-glucosidase. Furthermore, in vivo studies were carried out to distinguish the effects of the drug on the body. Histology analysis on mice model showed that compound S6 has a low necrosis rate in the liver, kidney, and pancreas compared to S7. Biochemical results of S6 revealed lower sugar level (112 mg/dL), increase insulin secretion (23, 25 μM/L), and low level of cholesterol (80, 85 mg/dL) and creatinine (1.6, 1.4 mg/dL). The results conclude that compound S6 is a new anti-diabetic agent that minimizes hyperglycemia complications.
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Affiliation(s)
- Saman Taj
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, Pakistan
| | - Matloob Ahmad
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Usman Ali Ashfaq
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, Pakistan.
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7
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Taj S, Ahmad M, Alshammari A, Alghamdi A, Ali Ashfaq U. Exploring the therapeutic potential of benzothiazine-pyrazole hybrid molecules against alpha-glucosidase: Pharmacological and molecular modelling based approach. Saudi J Biol Sci 2022; 29:1416-1421. [PMID: 35280565 PMCID: PMC8913548 DOI: 10.1016/j.sjbs.2021.11.033] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 11/11/2021] [Accepted: 11/17/2021] [Indexed: 11/14/2022] Open
Abstract
Diabetes mellitus (DM) is a metabolic disorder and a significant health problem all over the world. The current study elucidates the inhibitory potentials of the benzothiazine-pyrazole hybrid series against the α-Glucosidase enzyme. The molecular docking was employed to determine the binding affinity of synthetic compounds (ligands) with α-Glucosidase enzyme (receptor) active sites via the molecular operating environment (MOE). The molecular docking analysis revealed the best inhibitory interaction between certain synthetic compounds and the enzyme's active sites (α-Glucosidase). These compounds were further examined for drug-like properties, which necessarily validate the use of the compound as a drug. Then selected compounds were subjected to in vitro analysis to find the inhibitory potential with minimal dose. All compounds were docked into the active sites with the best binding pose and low rmsd values. The anti-diabetic analysis revealed that compound ST3 is more active against α-Glucosidase with IC50 values 5.8 µM as compared to acarbose which is 58.8 µM. The present study exhibited compound 2c has a high proficiency in lowering blood glucose levels compared to acarbose. This study strengthened the scope of designing/synthesizing these benzothiazine-pyrazole hybrid molecules as anti-diabetic drug molecules in the pharmaceutical industry.
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Affiliation(s)
- Saman Taj
- Department of Bioinformatics and Biotechnology, Government College University Faisalabad, Pakistan
| | - Matloob Ahmad
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Abdulrahman Alshammari
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Abdullah Alghamdi
- Department of Pathology and Laboratory Medicine, Riyadh Security Forces Hospital, Ministry of Interior, Kingdom of Saudi Arabia
| | - Usman Ali Ashfaq
- Department of Bioinformatics and Biotechnology, Government College University Faisalabad, Pakistan
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8
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Khalid H, Shahid S, Tariq S, Ijaz B, Ashfaq UA, Ahmad M. Discovery of Novel HCV NS5B polymerase inhibitor, 2-(3,4-dimethyl-5,5-dioxidobenzo[e]pyrazolo[4,3-c][1,2]thiazin-2(4H)-yl)-N-(2-fluorobenzyl)acetamide via molecular docking and experimental approach. Clin Exp Pharmacol Physiol 2021; 48:1653-1661. [PMID: 34386985 DOI: 10.1111/1440-1681.13571] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 07/13/2021] [Accepted: 08/08/2021] [Indexed: 11/27/2022]
Abstract
Hepatitis C Virus (HCV) is a viral infection posing a severe global threat that left untreated progresses to end-stage liver disease, including cirrhosis and hepatocellular carcinoma (HCC). Moreover, no prophylactic approach exists so far enabling its prevention. The NS5B polymerase holds special significance as the target of intervention against HCV infection. The current study kindles benzothiazine derivatives against HCV NS5B polymerase through in silico and experimental approaches. Following docking, the compound 2-(3,4-dimethyl-5,5-dioxidobenzo[e]pyrazolo[4,3-c][1,2]thiazin-2(4H)-yl)-N-(2-fluorobenzyl)acetamide was revealed to form effective binding interaction in the proposed site of HCV NS5B with a score of -10 kcal/mol and subsequently was deciphered through molecular dynamics (MD) simulation study which indicated interaction of residues TYR_382, VAL_381 and HIS_467 through hydrophobic interaction and two residues such as GLU_202 and LYS_209 contributed in the formation of water bridges. The subsequent in silico pharmacological analysis revealed its safe drug profile. The cytotoxicity activity of compound 6c indicated to be non-toxic in HepG2 cells at concentration ranges from 0.001-1.0 µmol/L with >80% cell viability and diminished expression of the HCV NS5B to 98% at the dose of 1.0 µmol/L and 90% at 0.5µmol/L. Thus the hit compound 6c might be a potent NS5B polymerase inhibitor required to be validated further through in vivo and preclinical studies.
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Affiliation(s)
- Hina Khalid
- Department of Bioinformatics and Biotechnology, Government College University Faisalabad (GCUF), Faisalabad, Pakistan
| | - Sana Shahid
- Department of Bioinformatics and Biotechnology, Government College University Faisalabad (GCUF), Faisalabad, Pakistan
| | - Somayya Tariq
- Center of Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Bushra Ijaz
- Center of Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Usman Ali Ashfaq
- Department of Bioinformatics and Biotechnology, Government College University Faisalabad (GCUF), Faisalabad, Pakistan
| | - Matloob Ahmad
- Department of Chemistry, Government College University, Faisalabad, Pakistan
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9
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Schöbel J, Elbers P, Truong K, Rissanen K, Bolm C. 1,2‐Benzothiazine Derivatives from Sulfonimidamides by Metal‐Catalyzed Annulation Reactions in Solution and under Solvent‐Free Mechanochemical Conditions. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001505] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Jan‐Hendrik Schöbel
- Institute of Organic Chemistry RWTH Aachen University Landoltweg 1 D-52074 Aachen Germany
| | - Philipp Elbers
- Institute of Organic Chemistry RWTH Aachen University Landoltweg 1 D-52074 Aachen Germany
| | - Khai‐Nghi Truong
- Department of Chemistry University of Jyvaskyla, P.O. Box 35 Survontie 9B FI-40014 Jyväskylä Finland
| | - Kari Rissanen
- Department of Chemistry University of Jyvaskyla, P.O. Box 35 Survontie 9B FI-40014 Jyväskylä Finland
| | - Carsten Bolm
- Institute of Organic Chemistry RWTH Aachen University Landoltweg 1 D-52074 Aachen Germany
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10
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Szczęśniak-Sięga BM, Wiatrak B, Czyżnikowska Ż, Janczak J, Wiglusz RJ, Maniewska J. Synthesis and biological evaluation as well as in silico studies of arylpiperazine-1,2-benzothiazine derivatives as novel anti-inflammatory agents. Bioorg Chem 2020; 106:104476. [PMID: 33250206 DOI: 10.1016/j.bioorg.2020.104476] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/06/2020] [Accepted: 11/12/2020] [Indexed: 12/20/2022]
Abstract
Novel arylpiperazine-1,2-benzothiazine derivatives have been designed and synthesized as potential anti-inflammatory agents. Their structure and properties have been studied using spectroscopic techniques (1H NMR, 13C NMR, FT-IR), MS, elemental analyses, and single-crystal X-ray diffraction (SCXRD, for compound 7b). This study aimed to evaluate the inhibitory activity of new derivatives against both cyclooxygenase isoforms COX-1 and COX-2 due to the similarity of new compounds to oxicams drugs from the NSAIDs group. All new compounds were divided into two series - A and B - with a different linker between thiazine and piperazines nitrogens. Series A included the three-carbon aliphatic linker and series B - two-carbon with a carbonyl group. According to in vitro and molecular docking studies all new compounds exhibited cyclooxygenase inhibitory activity. The series of A compounds included COX-1 inhibitors only. In contrast, the B series showed inhibition of both COX-1 and COX-2, which suggested the importance of the acetoxy linker for COX-2 inhibition. Moreover, the most selective compound 7b, towards COX-2, was non-toxic for the normal human cell line (in concentration of 10 µM) comparable to reference drug meloxicam. Additionally, investigation of influence on model membranes confirmed the ability of the compound 7b to penetrate lipid bilayers which seemed to be important to the influence with membrane protein-cyclooxygenase.
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Affiliation(s)
- Berenika M Szczęśniak-Sięga
- Department of Medicinal Chemistry, Faculty of Pharmacy, Wroclaw Medical University, Borowska 211, 50-556 Wrocław, Poland.
| | - Benita Wiatrak
- Department of Pharmacology, Faculty of Medicine, Wroclaw Medical University, J. Mikulicza-Radeckiego 2, 50-345 Wrocław, Poland; Department of Basic Medical Sciences, Faculty of Pharmacy, Wroclaw Medical University, Borowska 211, 50-556 Wroclaw, Poland
| | - Żaneta Czyżnikowska
- Department of Inorganic Chemistry, Faculty of Pharmacy, Wroclaw Medical University, Borowska 211a, 50-556 Wrocław, Poland
| | - Jan Janczak
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2 Str., 50-422 Wrocław, Poland
| | - Rafal J Wiglusz
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2 Str., 50-422 Wrocław, Poland
| | - Jadwiga Maniewska
- Department of Medicinal Chemistry, Faculty of Pharmacy, Wroclaw Medical University, Borowska 211, 50-556 Wrocław, Poland
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11
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Ahmad Saddique F, Ahmad M, Kanwal A, Aslam S, Fawad Zahoor A. Recent trends toward the synthesis of fused-benzothiazines and their derivatives. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1830420] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
| | - Matloob Ahmad
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Afshan Kanwal
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Sana Aslam
- Department of Chemistry, Government College Women University, Faisalabad, Pakistan
| | - Ameer Fawad Zahoor
- Department of Chemistry, Government College University, Faisalabad, Pakistan
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12
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13
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Abid SMA, Aslam S, Zaib S, Bakht SM, Ahmad M, Athar MM, Gardiner JM, Iqbal J. Pyrazolobenzothiazine-based carbothioamides as new structural leads for the inhibition of monoamine oxidases: design, synthesis, in vitro bioevaluation and molecular docking studies. MEDCHEMCOMM 2017; 8:452-464. [PMID: 30108763 DOI: 10.1039/c6md00570e] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 12/26/2016] [Indexed: 01/30/2023]
Abstract
Two new series of pyrazolobenzothiazine-based carbothioamides (3a-o and 4a-o) were synthesized using saccharin as the starting material. The synthesized derivatives were investigated for their ability to inhibit monoamine oxidases (MAO). Compound 3b was found to be a very potent MAO-A inhibitor with an IC50 value of 0.003 ± 0.0007 μM, while compound 4d was the most effective inhibitor of MAO-B having an IC50 value of 0.02 ± 0.001 μM. Molecular docking studies were performed to identify the probable binding modes in the active site of the monoamine oxidase enzymes. The synthetic and computational investigations in the current work suggested that these newly identified inhibitors may serve as a powerful starting point for the exploration and optimization of potential therapeutic agents targeting Parkinson's disease.
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Affiliation(s)
- Syed Mobasher Ali Abid
- Centre for Advanced Drug Research , COMSATS Institute of Information Technology , Abbottabad-22060 , Pakistan . ; ; ; Tel: +92 992 383591 96
| | - Sana Aslam
- Department of Chemistry , Government College Women University , Faisalabad-38000 , Pakistan.,Institute of Chemistry , University of the Punjab , Lahore , Pakistan
| | - Sumera Zaib
- Centre for Advanced Drug Research , COMSATS Institute of Information Technology , Abbottabad-22060 , Pakistan . ; ; ; Tel: +92 992 383591 96
| | - Syeda Mahwish Bakht
- Centre for Advanced Drug Research , COMSATS Institute of Information Technology , Abbottabad-22060 , Pakistan . ; ; ; Tel: +92 992 383591 96
| | - Matloob Ahmad
- Department of Chemistry , Government College University , Faisalabad-38000 , Pakistan
| | | | - John M Gardiner
- School of Chemistry and Manchester Institute of Biotechnology , University of Manchester , Manchester M1 7DN , UK . ; Tel: +44 (0)161 306 4530
| | - Jamshed Iqbal
- Centre for Advanced Drug Research , COMSATS Institute of Information Technology , Abbottabad-22060 , Pakistan . ; ; ; Tel: +92 992 383591 96
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14
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Novel Armed Pyrazolobenzothiazine Derivatives: Synthesis, X-Ray Crystal Structure and POM analyses of Biological Activity Against Drug Resistant Clinical Isolate of Staphylococcus aureus. Pharm Chem J 2016. [DOI: 10.1007/s11094-016-1417-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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15
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Apostolov S, Vastag G, Matijević B, Petrović S. Chromatographic and Computational Assessment of Potential Biological Activity of N-(Substituted Phenyl)- 2-Chloroacetamides Applying Multivariate Methods. J LIQ CHROMATOGR R T 2015. [DOI: 10.1080/10826076.2015.1092447] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Suzana Apostolov
- Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, University of Novi Sad, Novi Sad, Serbia
| | - Gyöngyi Vastag
- Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, University of Novi Sad, Novi Sad, Serbia
| | - Borko Matijević
- Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, University of Novi Sad, Novi Sad, Serbia
| | - Slobodan Petrović
- Faculty of Technology and Metallurgy, University of Belgrade, Belgrade, Serbia
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16
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Ahmad M, Aslam S, Rizvi SUF, Muddassar M, Ashfaq UA, Montero C, Ollinger O, Detorio M, Gardiner JM, Schinazi RF. Molecular docking and antiviral activity of N-substituted benzyl/phenyl-2-(3,4-dimethyl-5,5-dioxidopyrazolo[4,3-c][1,2]benzothiazin-2(4H)-yl)acetamides. Bioorg Med Chem Lett 2015; 25:1348-51. [PMID: 25701249 PMCID: PMC7717120 DOI: 10.1016/j.bmcl.2015.01.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 01/03/2015] [Accepted: 01/05/2015] [Indexed: 11/28/2022]
Abstract
Two series of fifteen N-substituted benzyl/phenyl-2-(3,4-dimethyl-5,5-dioxidopyrazolo[4,3-c][1,2]benzothiazin-2(4H)-yl)acetamides were screened for anti-HIV-1 activity and cytotoxicity. The compounds 6a, 6d, 6e, 6g and 6i from the series 6a-i of benzylamides and 7a, 7b, 7c, 7d and 7e from the series 7a-f of anilides were identified as effective anti-HIV-1 agents with EC50 values <20μM. Among these compounds that displayed anti-HIV-1 activity, 6a, 6e, 6g and 6i showed no toxicity in human PBM, CEM and Vero cells, with the exception of 6a which displayed toxicity in Vero cells. Molecular docking of these compounds provided insight into the molecular mechanism and it was found that 6e, 6g and 6i bound deeply in the NNRTI binding pocket of the HIV-1 reverse transcriptase, using RT-bound nevirapine X-ray data and molecular docking for validation, showing the potential of these new structures as inhibitors of this viral enzyme.
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Affiliation(s)
- Matloob Ahmad
- Department of Chemistry, Government College University, Faisalabad 38000, Pakistan
| | - Sana Aslam
- Department of Chemistry, Government College Women University, Faisalabad, Pakistan
| | | | - Muhammad Muddassar
- Department of Biosciences, COMSATS Institute of Information Technology, Park Road, Islamabad, Pakistan
| | - Usman Ali Ashfaq
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad 38000, Pakistan
| | - Catherine Montero
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Emory University School of Medicine/Veterans Affairs Medical Center, 1760 Haygood Drive, Atlanta, GA 30322, USA
| | - Olivia Ollinger
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Emory University School of Medicine/Veterans Affairs Medical Center, 1760 Haygood Drive, Atlanta, GA 30322, USA
| | - Mervi Detorio
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Emory University School of Medicine/Veterans Affairs Medical Center, 1760 Haygood Drive, Atlanta, GA 30322, USA
| | - John M Gardiner
- School of Chemistry and Manchester Institute of Biotechnology, University of Manchester, Manchester M1 7DN, UK.
| | - Raymond F Schinazi
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Emory University School of Medicine/Veterans Affairs Medical Center, 1760 Haygood Drive, Atlanta, GA 30322, USA
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17
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Vastag G, Apostolov S, Matijević B, Petrović S. Establishing dependences between different lipophilic parameters of new potentially biologically active N-substituted-2-phenylacetamide derivatives by applying multivariate methods. J Chromatogr Sci 2014; 53:312-9. [PMID: 24981978 DOI: 10.1093/chromsci/bmu061] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Lipophilicity, a very important parameter in the potential biological activities of molecules, was investigated for newly synthesized N-substituted-2-phenylacetamide derivatives. The determination was carried out in two ways: first experimentally, by applying thin-layer chromatography (TLC) on reversed-phase TLC (RPTLC) RP18F254s in the presence of one protic (methanol) and one aprotic solvent (acetonitrile) and then mathematically, by using different software packages. The intercept of the linear dependence between volume fractions of the organic solvent and the retention parameters obtained by TLC is known as the retention chromatographic constant, R(M)(0), while the slope represents the m value. In order to establish the dependences between the partition coefficient, log P as the standard measure of lipophilicity and the alternative lipophilic parameters obtained experimentally by TLC, R(M)(0) and m values, linear regression analysis and multivariate methods, cluster analysis (CA) and principal component analysis (PCA), were used. All applied methods gave approximately similar results. Although there is a linear dependence between the two chromatographic parameters, the retention constant, R(M)(0), and the m values, only R(M)(0) shows suitable similarity with the standard measure of lipophilicity of the investigated N-substituted-2-phenylacetamide derivatives at the given conditions. The existence of this resemblance proves that the chromatographic retention constant, R(M)(0), obtained by RPTLC could be successfully used for the description of lipophilicity of investigated compounds. On the other hand, the results confirmed that the applied linear regression analysis and the multivariate analysis (CA and PCA) have the ability to compare lipophilic parameters of the investigated phenylacetamide derivatives obtained in different ways.
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Affiliation(s)
- Gyöngyi Vastag
- Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Trg D. Obradovića 3, Novi Sad 21000, Serbia
| | - Suzana Apostolov
- Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Trg D. Obradovića 3, Novi Sad 21000, Serbia
| | - Borko Matijević
- Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Trg D. Obradovića 3, Novi Sad 21000, Serbia
| | - Slobodan Petrović
- Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, Belgrade 11000, Serbia
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Aslam S, Zaib S, Ahmad M, Gardiner JM, Ahmad A, Hameed A, Furtmann N, Gütschow M, Bajorath J, Iqbal J. Novel structural hybrids of pyrazolobenzothiazines with benzimidazoles as cholinesterase inhibitors. Eur J Med Chem 2014; 78:106-17. [DOI: 10.1016/j.ejmech.2014.03.035] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2014] [Revised: 03/09/2014] [Accepted: 03/12/2014] [Indexed: 12/31/2022]
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Synthesis, molecular docking and antiviral screening of novel N′-substitutedbenzylidene-2-(4-methyl-5,5-dioxido-3-phenylbenzo[e]pyrazolo[4,3-c][1,2]thiazin-1(4H)-yl)acetohydrazides. Med Chem Res 2013. [DOI: 10.1007/s00044-013-0879-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Synthesis of novel pyrazolobenzothiazine 5,5-dioxide derivatives as potent anti-HIV-1 agents. Med Chem Res 2013. [DOI: 10.1007/s00044-013-0718-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Aslam S, Ahmad M, Zia-Ur-Rehman M, Montero C, Detorio M, Parvez M, Schinazi RF. Synthesis and anti-HIV-1 screening of novel N'-(1-(aryl)ethylidene)-2-(5,5-dioxido-3-phenylbenzo[e]pyrazolo[4,3-c][1,2]thiazin-4(1H)-yl)acetohydrazides. Arch Pharm Res 2013; 37:1380-93. [PMID: 23835833 DOI: 10.1007/s12272-013-0200-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2013] [Accepted: 06/25/2013] [Indexed: 11/30/2022]
Abstract
A novel series of N'-(1-(aryl)ethylidene)-2-(5,5-dioxido-3-phenylbenzo[e]pyrazolo[4,3-c][1,2]thiazin-4(1H)-yl)acetohydrazides was synthesized. The synthesis was carried out by thermal method as well as ultrasonic bath to reduce reaction time and to enhance product yields. The synthesized compounds were characterized by spectroscopic techniques like NMR, infrared and EIMS. The structure of compound 5w was elucidated by X-ray crystallography. The titled compounds were evaluated for anti-human immunodeficiency virus type 1 (anti-HIV-1) and cytotoxic activities. Biological studies indicated that amongst these compounds, 5a, b, j, h and i showed the activity with median effective concentration (EC50) values less than 20 μM. Compound 5i exhibited the most potent anti-HIV-1 activity (EC50 = 3.2 μM) while 5h showed anti-HIV-1 activity (EC50 = 3.8 μM) with no toxicity at all in primary human lymphocytes, CEM and VERO cells.
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Affiliation(s)
- Sana Aslam
- Institute of Chemistry, University of the Punjab, Lahore, 54590, Pakistan
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