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White CM, Cazares S, Gonzalez-Cortes ED, Driver TG. Iodine(III)-Catalyzed Oxidative Cyclization of Aryl Amines to Construct N-Alkylbenzimidazoles. J Org Chem 2024; 89:6590-6601. [PMID: 38613505 DOI: 10.1021/acs.joc.4c00346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/15/2024]
Abstract
An I(III)-catalyzed oxidative cyclization reaction using selectfluor as the oxidant was developed that converts ortho-substituted anilines to benzimidazoles. The mild reaction requires as little as 0.5 mol % of iodobenzene, and its scope is broad: electron-withdrawing or electron-releasing groups on the aniline portion are tolerated, and cyclic or acyclic N-alkylamines are permitted as ortho-substituents. Preliminary mechanistic investigations suggest that benzimidazole formation occurs via cationic reactive intermediates, and an intramolecular kinetic isotope effect of 1.98 ± 0.05 was measured.
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Affiliation(s)
- Carmen Margaret White
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7061, United States
| | - Sherlyn Cazares
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7061, United States
| | - Efren D Gonzalez-Cortes
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7061, United States
| | - Tom G Driver
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7061, United States
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2
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Bujji S, E PK, Sivan SK, Dh M, N J P S. Design, Synthesis, Anticancer Evaluation, and Molecular Docking Studies of Novel Benzoxazole Linked 1,3,4-Oxadiazoles. Anticancer Agents Med Chem 2021; 22:933-942. [PMID: 34229589 DOI: 10.2174/1871520621666210706120203] [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: 12/17/2020] [Revised: 03/18/2021] [Accepted: 04/12/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Cancer disease is making a serious concern globally. Global cancer occurrence is steadily increasing every year. There is always a persistent need to develop new anticancer drugs with reduced side effects or act synergistically with the existing chemotherapeutics. OBJECTIVE Benzoxazoles are fused bicyclic nitrogen and oxygen-containing heterocyclic compounds and are considered biologically privileged scaffolds. We designed a synthetic route to link the benzoxazoles with oxadiazoles resulting in a better pharmacophore for anticancer activity. METHODS A series of novel amide derivatives of benzoxazole linked 1,3,4-oxadiazoles (10a-j) were synthesized and characterized by 1H NMR, 13C NMR, and mass spectroscopic techniques. The biological properties of the compounds were screened in vitro against four different tumor cell lines. RESULTS The results suggest that the compound 10b having 3,4,5-trimethoxy substitution on the phenyl ring exhibited potent anticancer activity in three cell lines (A549 = 0.13 ± 0.014 µM, MCF-7 = 0.10 ± 0.013 µM and HT-29 = 0.22 ± 0.017 µM). Notably, among the synthesized derivatives, compounds 10b, 10c, 10f, 10g, and 10i exhibited potent anticancer activity than the control IC50 in the range of 0.11 ± 0.02 to 0.93 ± 0.034 µM. Molecular docking simulation results showed compounds were stabilized by hydrogen bond and π-π interactions with the protein. CONCLUSION The molecules showed comparable binding affinities with standard Combretastatin-A4. The present research work is preliminary and needs further studies to take the synthesized compounds to the next level in the cancer research field.
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Affiliation(s)
- Sushmitha Bujji
- Department of Pharmaceutical Chemistry, University College of Technology, Osmania University, Hyderabad, Telangana-500007, India
| | - Praveen Kumar E
- Department of Chemistry, University College of Science, Osmania University, Hyderabad, Telangana-500 007, India
| | - Sree Kanth Sivan
- Department of Chemistry, Nizam College, Basheerbagh, Hyderabad, India -500001, India
| | - Manjunatha Dh
- Department of Chemistry, Davangere University, Shivagangothri, Davangere-577 002, India
| | - Subhashini N J P
- Department of Pharmacy, & Department of Chemistry, University College of Science, Osmania University, Hyderabad, Telangana-500 007, India
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Rosiak D, Okuniewski A, Chojnacki J. The influence of the type of halogen substituent and its position on the molecular conformation, intermolecular interactions and crystal packing for a series of 1-benzoyl-3-(halogenophenyl)thioureas. Acta Crystallogr C 2021; 77:11-19. [DOI: 10.1107/s2053229620015594] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 11/25/2020] [Indexed: 11/10/2022] Open
Abstract
By the reaction of benzoyl chloride, potassium isothiocyanate and the appropriate halogenoaniline, i.e. 2/3/4-(bromo/iodo)aniline, we have obtained five new 1-benzoyl-3-(halogenophenyl)thioureas, namely, 1-benzoyl-3-(2-bromophenyl)thiourea and 1-benzoyl-3-(3-bromophenyl)thiourea, C14H11BrN2OS, and 1-benzoyl-3-(2-iodophenyl)thiourea, 1-benzoyl-3-(3-iodophenyl)thiourea and 1-benzoyl-3-(4-iodophenyl)thiourea, C14H11IN2OS. Structural and conformational features of the compounds have been analyzed using X-ray diffraction and theoretical calculations. The novel compounds were characterized by solid-state IR and 1H/13C NMR spectroscopy. The conformations and intermolecular interactions, such as hydrogen bonds, π–π and S(6)...π stacking, and X...O (X = I or Br), I...S and I...π, have been examined and rationalized, together with four analogous compounds described previously in the literature. The set of nine compounds was chosen to examine how a change of the halogen atom and its position on the phenyl ring affects the molecular and crystal structures.
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Synthesis, biological evaluation and molecular docking studies of novel 1,2,3-triazole tethered chalcone hybrids as potential anticancer agents. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128356] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Tetrahydrocurcumin-loaded vaginal nanomicrobicide for prophylaxis of HIV/AIDS: in silico study, formulation development, and in vitro evaluation. Drug Deliv Transl Res 2020; 9:828-847. [PMID: 30900133 DOI: 10.1007/s13346-019-00633-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A vaginal microbicide is a front-line women-dependent approach and an alternative to a condom for prevention of unprotected sexual intercourse-associated HIV. The microbicide research is still in its infancy with several products in the clinical studies being reported to have good efficacy, safe, but with poor adherence. One such molecule reported with an excellent efficacy when tested preclinically is curcumin, a natural polyphenol derived from Curcuma longa. Despite its potential HIV-1 inhibitory activity, it has intense yellow color staining properties, which would result in poor consumer compliance and adherence for vaginal application. To address this issue, tetrahydrocurcumin (THC), a colorless derivative of curcumin, was subjected to in silico screening (molecular docking and dynamics simulation studies) using homology model of gp120-CD4 binding. It was found that THC exhibited equivalent gp120-CD4 binding inhibitory activity as compared with curcumin due to its stable hydrophobic interactions with residues Asp368 and Trp427 deeper in the Phe43 cavity of CD4 receptor. Hence, it can be effectively used as a potential microbicide candidate. THC, a BCS Class II molecule exhibits poor solubility, spreadability, and intracellular uptake when used in the conventional form. Thus, it was decided to develop a lipid-based nanomicrobicide gel for delivery of THC. The developed THC-loaded o/w microemulsion gel was characterized for physicochemical properties (globule size, drug content, drug release, and permeation) and further used for in vitro cell line studies (cell viability, cellular uptake, and anti-HIV activity). The developed formulation was found to be stable with coitus-independent release profile and exhibited a rapid time-independent intracellular uptake. In addition, it exhibited a fourfold increase in efficacy as compared with conventional THC. Thus, the novel THC-loaded o/w microemulsion gel exhibited the potential for prevention of HIV-1 infection associated with unprotected sexual intercourse.
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Vangala R, Sivan SK, Peddi SR, Manga V. Computational design, synthesis and evaluation of new sulphonamide derivatives targeting HIV-1 gp120. J Comput Aided Mol Des 2019; 34:39-54. [PMID: 31792886 DOI: 10.1007/s10822-019-00258-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 11/19/2019] [Indexed: 11/29/2022]
Abstract
Attachment of envelope glycoprotein gp120 to the host cell receptor CD4 is the first step during the human immunodeficiency virus-1 (HIV-1) entry into the host cells that makes it a promising target for drug design. To elucidate the crucial three dimensional (3D) structural features of reported HIV-1 gp120 CD4 binding inhibitors, 3D pharmacophores were generated and receptor based approach was employed to quantify these structural features. A four-partial least square factor model with good statistics and predictive ability was generated for the dataset of 100 molecules. To further ascertain the structural requirement for gp120-CD4 binding inhibition, molecular interaction studies of inhibitors with gp120 was carried out by performing molecular docking using Glide 5.6. Based on these studies, structural requirements were drawn and new molecules were designed accordingly to yield new sulphonamides derivatives. A water based green synthetic approach was adopted to obtain these compounds which were evaluated for their HIV-1 gp120 CD4 binding inhibition. The newly synthesized compounds exhibited remarkable activity (10-fold increase) when compared with the standard BMS 806. Further the stability of newly synthesized derivatives with HIV-1 gp120 was also investigated through molecular dynamics simulation studies. This provides a proof of concept for molecular modeling based design of new inhibitors for inhibition of HIV-1 gp120 CD4 interaction.
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Affiliation(s)
- Radhika Vangala
- Molecular Modeling and Medicinal Chemistry Group, Department of Chemistry, University College of Science, Osmania University, Hyderabad, Telangana, 500 007, India
| | - Sree Kanth Sivan
- Department of Chemistry, Nizam College, Osmania University, Hyderabad, 500 001, India
| | - Saikiran Reddy Peddi
- Molecular Modeling and Medicinal Chemistry Group, Department of Chemistry, University College of Science, Osmania University, Hyderabad, Telangana, 500 007, India
| | - Vijjulatha Manga
- Molecular Modeling and Medicinal Chemistry Group, Department of Chemistry, University College of Science, Osmania University, Hyderabad, Telangana, 500 007, India.
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Suttisintong K, Kaewchangwat N, Thanayupong E, Nerungsi C, Srikun O, Pungpo P. Recent Progress in the Development of HIV-1 Entry Inhibitors: From Small Molecules to Potent Anti-HIV Agents. Curr Top Med Chem 2019; 19:1599-1620. [DOI: 10.2174/1568026619666190712204050] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Revised: 06/07/2019] [Accepted: 06/21/2019] [Indexed: 01/21/2023]
Abstract
Viral entry, the first process in the reproduction of viruses, primarily involves attachment of the viral envelope proteins to membranes of the host cell. The crucial components that play an important role in viral entry include viral surface glycoprotein gp120, viral transmembrane glycoprotein gp41, host cell glycoprotein (CD4), and host cell chemokine receptors (CCR5 and CXCR4). Inhibition of the multiple molecular interactions of these components can restrain viruses, such as HIV-1, from fusion with the host cell, blocking them from reproducing. This review article specifically focuses on the recent progress in the development of small-molecule HIV-1 entry inhibitors and incorporates important aspects of their structural modification that lead to the discovery of new molecular scaffolds with more potency.
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Affiliation(s)
- Khomson Suttisintong
- National Nanotechnology Center (NANOTEC), National Science and Technology, Development Agency (NSTDA), 111 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani 12120, Thailand
| | - Narongpol Kaewchangwat
- National Nanotechnology Center (NANOTEC), National Science and Technology, Development Agency (NSTDA), 111 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani 12120, Thailand
| | - Eknarin Thanayupong
- National Nanotechnology Center (NANOTEC), National Science and Technology, Development Agency (NSTDA), 111 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani 12120, Thailand
| | - Chakkrapan Nerungsi
- The Government Pharmaceutical Organization, 75/1 Rama VI Road, Ratchathewi, Bangkok 10400, Thailand
| | - Onsiri Srikun
- The Government Pharmaceutical Organization, 75/1 Rama VI Road, Ratchathewi, Bangkok 10400, Thailand
| | - Pornpan Pungpo
- Department of Chemistry, Faculty of Science, Ubon Ratchathani University, 85 Sathonlamark Road, Warinchamrap, Ubon Ratchathani 34190, Thailand
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Mirani A, Kundaikar H, Velhal S, Patel V, Bandivdekar A, Degani M, Patravale V. Evaluation of Phytopolyphenols for their gp120-CD4 Binding Inhibitory Properties by In Silico Molecular Modelling & In Vitro Cell Line Studies. Curr HIV Res 2019; 17:102-113. [DOI: 10.2174/1570162x17666190611121627] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 05/22/2019] [Accepted: 05/27/2019] [Indexed: 12/31/2022]
Abstract
Background:Lack of effective early-stage HIV-1 inhibitor instigated the need for screening of novel gp120-CD4 binding inhibitor. Polyphenols, a secondary metabolite derived from natural sources are reported to have broad spectrum HIV-1 inhibitory activity. However, the gp120-CD4 binding inhibitory activity of polyphenols has not been analysed in silico yet.Objectives:To establish the usage of phytopolyphenols (Theaflavin, Epigallocatechin (EGCG), Ellagic acid and Gallic acid) as early stage HIV-1 inhibitor by investigating their binding mode in reported homology of gp120-CD4 receptor complex using in silico screening studies and in vitro cell line studies.Methods:The in silico molecular docking and molecular simulation studies were performed using Schrödinger 2013-2 suite installed on Fujitsu Celsius Workstation. The in vitro cell line studies were performed in the TZM-bl cell line using MTT assay and β-galactosidase assay.Results:The results of molecular docking indicated that Theaflavin and EGCG exhibited high XP dock score with binding pose exhibiting Van der Waals interaction and hydrophobic interaction at the deeper site in the Phe43 cavity with Asp368 and Trp427. Both Theaflavin and EGCG form a stable complex with the prepared HIV-1 receptor and their binding mode interaction is within the vicinity 4 Å. Further, in vitro cell line studies also confirmed that Theaflavin (SI = 252) and EGCG (SI = 138) exert better HIV-1 inhibitory activity as compared to Ellagic acid (SI = 30) and Gallic acid (SI = 34).Conclusions:The results elucidate a possible binding mode of phytopolyphenols, which pinpoints their plausible mechanism and directs their usage as early stage HIV-1 inhibitor.
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Affiliation(s)
- Amit Mirani
- Department of Pharmaceutical Science & Technology, Institute of Chemical Technology, Mumbai-400019, India
| | - Harish Kundaikar
- Department of Pharmaceutical Science & Technology, Institute of Chemical Technology, Mumbai-400019, India
| | - Shilpa Velhal
- Department of Biochemistry & Virology, National Institute for Research in Reproductive Health (ICMR), Mumbai- 400012, India
| | - Vainav Patel
- Department of Biochemistry & Virology, National Institute for Research in Reproductive Health (ICMR), Mumbai- 400012, India
| | - Atmaram Bandivdekar
- Department of Biochemistry & Virology, National Institute for Research in Reproductive Health (ICMR), Mumbai- 400012, India
| | - Mariam Degani
- Department of Pharmaceutical Science & Technology, Institute of Chemical Technology, Mumbai-400019, India
| | - Vandana Patravale
- Department of Pharmaceutical Science & Technology, Institute of Chemical Technology, Mumbai-400019, India
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9
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Bielenica A, Sanna G, Madeddu S, Struga M, Jóźwiak M, Kozioł AE, Sawczenko A, Materek IB, Serra A, Giliberti G. New thiourea and 1,3-thiazolidin-4-one derivatives effective on the HIV-1 virus. Chem Biol Drug Des 2017; 90:883-891. [PMID: 28434186 DOI: 10.1111/cbdd.13009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Revised: 04/12/2017] [Accepted: 04/14/2017] [Indexed: 12/24/2022]
Abstract
Thiourea derivatives have been reported to possess many biological activities, among them antiviral and antitumoral properties. As part of our continuing effort to develop new active compounds, we report the synthesis and the evaluation of new fifteen thiourea derivatives with 1,3-benzothiazole-2-yl moiety, among them a group of biologically active (1-7) also underwent cyclization to 1,3-thiazolidin-4-ones. Molecular structure of four compounds (4, 13, 15 and 3a) was determined by an X-ray crystallography. We here report the evaluation of their cytotoxicity against human leukaemia/lymphoma- and solid tumour-derived cell lines and of their antiviral activity against HIV-1 and representatives of ssRNA and dsDNA viruses. Derivative 5 showed an interesting activity against HIV-1 wild type and against variants carrying clinically relevant mutations. A colorimetric enzyme immunoassay clarified its mode of action as a non-nucleoside inhibitor of the reverse transcriptase.
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Affiliation(s)
- Anna Bielenica
- Chair and Department of Biochemistry, Medical University of Warsaw, Warszawa, Poland
| | - Giuseppina Sanna
- Department of Biomedical Sciences, University of Cagliari, Cittadella Universitaria, Monserrato, Cagliari, Italy
| | - Silvia Madeddu
- Department of Biomedical Sciences, University of Cagliari, Cittadella Universitaria, Monserrato, Cagliari, Italy
| | - Marta Struga
- Department of Biochemistry and Pharmacogenomics, Faculty of Pharmacy, Medical University of Warsaw, Warsaw, Poland.,Laboratory of Centre for Preclinical Research, Medical University of Warsaw, Warsaw, Poland
| | - Michał Jóźwiak
- Laboratory of Centre for Preclinical Research, Medical University of Warsaw, Warsaw, Poland.,Department of Biochemistry, Second Faculty of Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Anna E Kozioł
- Faculty of Chemistry, Maria Curie-Sklodowska University, Lublin, Poland
| | | | - Ilona B Materek
- Faculty of Chemistry, Maria Curie-Sklodowska University, Lublin, Poland
| | - Alessandra Serra
- Department of Biomedical Sciences, University of Cagliari, Cittadella Universitaria, Monserrato, Cagliari, Italy
| | - Gabriele Giliberti
- Department of Biomedical Sciences, University of Cagliari, Cittadella Universitaria, Monserrato, Cagliari, Italy
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Singh G, Saroa A, Rani S, Promila, Choquesillo-Lazarte D, Sahoo S. Unsymmetrically urea silatranes: Synthesis, characterization and a selective on–off fluorescence response to acetate anion. ARAB J CHEM 2017. [DOI: 10.1016/j.arabjc.2015.07.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Saeed A, Qamar R, Fattah TA, Flörke U, Erben MF. Recent developments in chemistry, coordination, structure and biological aspects of 1-(acyl/aroyl)-3-(substituted) thioureas. RESEARCH ON CHEMICAL INTERMEDIATES 2016. [DOI: 10.1007/s11164-016-2811-5] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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12
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Ajani OO, Aderohunmu DV, Ikpo CO, Adedapo AE, Olanrewaju IO. Functionalized Benzimidazole Scaffolds: Privileged Heterocycle for Drug Design in Therapeutic Medicine. Arch Pharm (Weinheim) 2016; 349:475-506. [PMID: 27213292 DOI: 10.1002/ardp.201500464] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Revised: 04/14/2016] [Accepted: 04/22/2016] [Indexed: 01/09/2023]
Abstract
Benzimidazole derivatives are crucial structural scaffolds found in diverse libraries of biologically active compounds which are therapeutically useful agents in drug discovery and medicinal research. They are structural isosteres of naturally occurring nucleotides, which allows them to interact with the biopolymers of living systems. Hence, there is a need to couple the latest information with the earlier documentations to understand the current status of the benzimidazole nucleus in medicinal chemistry research. This present work unveils the benzimidazole core as a multifunctional nucleus that serves as a resourceful tool of information for synthetic modifications of old existing candidates in order to tackle drug resistance bottlenecks in therapeutic medicine. This manuscript deals with the recent advances in the synthesis of benzimidazole derivatives, the widespread biological activities as well as pharmacokinetic reports. These present them as a toolbox for fighting infectious diseases and also make them excellent candidates for future drug design.
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Affiliation(s)
- Olayinka O Ajani
- Department of Chemistry, Covenant University, CST, Canaanland, Ota, Ogun State, Nigeria
| | - Damilola V Aderohunmu
- Department of Chemistry, Covenant University, CST, Canaanland, Ota, Ogun State, Nigeria
| | - Chinwe O Ikpo
- Department of Chemistry, University of the Western Cape, Bellville, Cape Town, South Africa
| | - Adebusayo E Adedapo
- Department of Chemistry, Covenant University, CST, Canaanland, Ota, Ogun State, Nigeria
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Hou W, Fang C, Liu J, Yu H, Qi J, Zhang Z, Yuan R, Xiong D, Gao S, Adam Yuan Y, Li S, Gu Y, Xia N. Molecular insights into the inhibition of HIV-1 infection using a CD4 domain-1-specific monoclonal antibody. Antiviral Res 2015; 122:101-11. [PMID: 26259811 DOI: 10.1016/j.antiviral.2015.08.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Revised: 08/01/2015] [Accepted: 08/07/2015] [Indexed: 12/19/2022]
Abstract
An HIV-1 infection in a host cell occurs through an ordered process that involves HIV-1 attachment to the host's cellular CD4 receptor, co-receptor binding to CCR5 or CXCR4, and the subsequent fusion with the cellular membrane. The natural viral entry pathway into a host cell provides an opportunity to develop agents for the treatment of HIV-1 infections. Several engineered monoclonal antibodies specifically targeting CD4 have shown antiviral activities in clinical trials. Here, we report on an anti-CD4 mAb (15A7) that displays a unique binding specificity for domain 1 of CD4, whose epitope partially overlaps with the gp120 binding region. Moreover, 15A7 displays a much stronger binding affinity to CD4(+) cell lines after HIV infection. 15A7 is able to block and neutralize a broad range of primary HIV-1 isolates and T cell-line passage strains. Notably, the bivalent F(ab')2 form of 15A7 is more effective than the Fab form in blocking HIV-1 infection, which is further supported by molecular docking analyses. Together, these results suggest that this novel antibody may exert its antiviral activity by blocking gp120 targeting to the CD4 receptor or competing with gp120 for CD4 receptor binding and might present post-attachment neutralization activity. This antibody could provide a new candidate to efficiently block HIV-1 infection or provide new starting materials for HIV treatment, especially when HIV-1-resistant strains against the current CD4 mAb treatments have already been identified.
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Affiliation(s)
- Wangheng Hou
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, Xiamen University, Xiamen 361005, China
| | - Chu Fang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, Xiamen University, Xiamen 361005, China
| | - Jiayan Liu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, Xiamen University, Xiamen 361005, China
| | - Hai Yu
- National Institute of Diagnostics and Vaccine Development in Infectious Disease, School of Public Health, Xiamen University, Xiamen 361005, China
| | - Jialong Qi
- National Institute of Diagnostics and Vaccine Development in Infectious Disease, School of Public Health, Xiamen University, Xiamen 361005, China
| | - Zhiqing Zhang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, Xiamen University, Xiamen 361005, China
| | - Ruixue Yuan
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, Xiamen University, Xiamen 361005, China
| | - Dan Xiong
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, Xiamen University, Xiamen 361005, China
| | - Shuangquan Gao
- National Institute of Diagnostics and Vaccine Development in Infectious Disease, School of Public Health, Xiamen University, Xiamen 361005, China
| | - Y Adam Yuan
- National Institute of Diagnostics and Vaccine Development in Infectious Disease, School of Public Health, Xiamen University, Xiamen 361005, China; National University of Singapore (Suzhou) Research Institute, Suzhou 215123, China
| | - Shaowei Li
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, Xiamen University, Xiamen 361005, China; National Institute of Diagnostics and Vaccine Development in Infectious Disease, School of Public Health, Xiamen University, Xiamen 361005, China
| | - Ying Gu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, Xiamen University, Xiamen 361005, China; National Institute of Diagnostics and Vaccine Development in Infectious Disease, School of Public Health, Xiamen University, Xiamen 361005, China.
| | - Ningshao Xia
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, Xiamen University, Xiamen 361005, China; National Institute of Diagnostics and Vaccine Development in Infectious Disease, School of Public Health, Xiamen University, Xiamen 361005, China
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14
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Abosadiya HM, Anouar EH, Hasbullah SA, Yamin BM. Synthesis, X-ray, NMR, FT-IR, UV/vis, DFT and TD-DFT studies of N-(4-chlorobutanoyl)-N'-(2-, 3- and 4-methylphenyl)thiourea derivatives. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 144:115-124. [PMID: 25748989 DOI: 10.1016/j.saa.2015.01.092] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Revised: 01/18/2015] [Accepted: 01/29/2015] [Indexed: 06/04/2023]
Abstract
A new isomers of thiourea derivatives, namely N-(4-chlorobutanoyl)-N'-(2-methylphenyl)-thiourea (1a), N-(4-chlorobutanoyl)-N'-(3-methylphenyl)thiourea (1b) and N-(4-chlorobutanoyl)-N'-(4-methylphenyl)thiourea (1c) have been synthesized by refluxing mixture of equimolar amounts of 4-chlorobutanoylisothiocyanate with 2, 3 or 4-toluidine, respectively. The three isomers were characterized by spectroscopic (UV/vis, FT-IR and NMR) and X-ray crystallography techniques. To investigate the isomerization effect on spectroscopic data, DFT and TD-DFT calculations have been carried out using five hybrid functionals (B3LYP, B3P86, CAM-B3LYP, M06-2X and PBE0) to predict UV/vis absorption bands (n→π∗ and π→π∗), (1)H and (13)C NMR chemical shifts, FT-IR vibration modes and X-ray parameters (bonds, bond angles and torsion angles) for 1a, 1b and 1c isomers. The results showed that the isomerization effect is significant on λ(MAX) absorption bands, while for IR and NMR the effect is negligible. In accordance with previous studies, B3LYP, B3P86 and PBE0 gave the most reliable to predict the excitation energies of thiourea derivatives.
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Affiliation(s)
- Hamza M Abosadiya
- School of Chemical Sciences and Food Technology, Universiti Kebangsaan Malaysia, 43650 Bangi, Selangor, Malaysia
| | - El Hassane Anouar
- Atta-ur-Rahman Institute for Natural Product Discovery, Universiti Teknologi MARA Puncak Alam Campus, 42300 Bandar Puncak Alam, Selangor D.E., Malaysia; Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
| | - Siti Aishah Hasbullah
- School of Chemical Sciences and Food Technology, Universiti Kebangsaan Malaysia, 43650 Bangi, Selangor, Malaysia
| | - Bohari M Yamin
- School of Chemical Sciences and Food Technology, Universiti Kebangsaan Malaysia, 43650 Bangi, Selangor, Malaysia.
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15
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Synthesis and evaluation of unsymmetrical heterocyclic thioureas as potent β-glucuronidase inhibitors. Med Chem Res 2015. [DOI: 10.1007/s00044-015-1369-x] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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16
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Wang J, Li Y, Yang Y, Zhang J, Du J, Zhang S, Yang L. Profiling the interaction mechanism of indole-based derivatives targeting the HIV-1 gp120 receptor. RSC Adv 2015. [DOI: 10.1039/c5ra04299b] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
A glycoprotein exposed on a viral surface, human immunodeficiency virus type 1 (HIV-1) gp120 is essential for virus entry into cells as it plays a vital role in seeking out specific cell surface receptors for entry.
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Affiliation(s)
- Jinghui Wang
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE)
- Department of Materials Sciences and Chemical Engineering
- Dalian University of Technology
- Dalian
- China
| | - Yan Li
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE)
- Department of Materials Sciences and Chemical Engineering
- Dalian University of Technology
- Dalian
- China
| | - Yinfeng Yang
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE)
- Department of Materials Sciences and Chemical Engineering
- Dalian University of Technology
- Dalian
- China
| | - Jingxiao Zhang
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE)
- Department of Materials Sciences and Chemical Engineering
- Dalian University of Technology
- Dalian
- China
| | - Jian Du
- Institute of Chemical Process Systems Engineering
- Dalian University of Technology
- Dalian 116024
- China
| | - Shuwei Zhang
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE)
- Department of Materials Sciences and Chemical Engineering
- Dalian University of Technology
- Dalian
- China
| | - Ling Yang
- Laboratory of Pharmaceutical Resource Discovery
- Dalian Institute of Chemical Physics
- Graduate School of the Chinese Academy of Sciences
- Dalian
- China
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17
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Keri RS, Hiremathad A, Budagumpi S, Nagaraja BM. Comprehensive Review in Current Developments of Benzimidazole-Based Medicinal Chemistry. Chem Biol Drug Des 2014; 86:19-65. [PMID: 25352112 DOI: 10.1111/cbdd.12462] [Citation(s) in RCA: 202] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Accepted: 10/12/2014] [Indexed: 12/13/2022]
Abstract
The properties of benzimidazole and its derivatives have been studied over more than one hundred years. Benzimidazole derivatives are useful intermediates/subunits for the development of molecules of pharmaceutical or biological interest. Substituted benzimidazole derivatives have found applications in diverse therapeutic areas such as antiulcer, anticancer agents, and anthelmintic species to name just a few. This work systematically gives a comprehensive review in current developments of benzimidazole-based compounds in the whole range of medicinal chemistry as anticancer, antibacterial, antifungal, anti-inflammatory, analgesic agents, anti-HIV, antioxidant, anticonvulsant, antitubercular, antidiabetic, antileishmanial, antihistaminic, antimalarial agents, and other medicinal agents. This review will further be helpful for the researcher on the basis of substitution pattern around the nucleus with an aim to help medicinal chemists for developing an SAR on benzimidazole drugs/compounds.
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Affiliation(s)
- Rangappa S Keri
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Bangalore, Karnataka, 562112, India
| | - Asha Hiremathad
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Bangalore, Karnataka, 562112, India
| | - Srinivasa Budagumpi
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Bangalore, Karnataka, 562112, India
| | - Bhari Mallanna Nagaraja
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Bangalore, Karnataka, 562112, India
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18
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Gu WG, Zhang X, Yuan JF. Anti-HIV drug development through computational methods. AAPS JOURNAL 2014; 16:674-80. [PMID: 24760437 DOI: 10.1208/s12248-014-9604-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Accepted: 04/02/2014] [Indexed: 11/30/2022]
Abstract
Although highly active antiretroviral therapy (HAART) is effective in controlling the progression of AIDS, the emergence of drug-resistant strains increases the difficulty of successful treatment of patients with HIV infection. Increasing numbers of patients are facing the dilemma that comes with the running out of drug combinations for HAART. Computational methods play a key role in anti-HIV drug development. A substantial number of studies have been performed in anti-HIV drug development using various computational methods, such as virtual screening, QSAR, molecular docking, and homology modeling, etc. In this review, we summarize recent advances in the application of computational methods to anti-HIV drug development for five key targets as follows: reverse transcriptase, protease, integrase, CCR5, and CXCR4. We hope that this review will stimulate researchers from multiple disciplines to consider computational methods in the anti-HIV drug development process.
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Affiliation(s)
- Wan-Gang Gu
- Department of Immunology, Zunyi Medical University, Zunyi, 563003, Guizhou, China,
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