1
|
Chowdhury S, Nandi N. Dynamics of the Catalytic Active Site of Isoleucyl tRNA Synthetase from Staphylococcus aureus bound with Adenylate and Mupirocin. J Phys Chem B 2022; 126:620-633. [PMID: 35015537 DOI: 10.1021/acs.jpcb.1c08555] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The development of new antimicrobial drugs is critically needed due to the alarming increase in antibiotic resistance in bacterial pathogens. The active sites of different bacterial aminoacyl tRNA synthetases (aaRS) are validated targets of antibiotics. At present, the only aaRS inhibitor approved is mupirocin (MRC) which targets bacterial isoleucyl tRNA synthetase (IleRS). The present work is aimed at understanding the lacunae of knowledge concerning the active site conformational dynamics in IleRS in the presence of inhibitor mupirocin. With this end in view, we have carried out classical molecular dynamics simulation and metadynamics simulations of the open state of IleRS from Staphylococcus aureus (SaIleRS), the closed state tripartite complex bound with cognate adenylate (Ile-AMP) and tRNA, the closed state tripartite complex bound with noncognate MRC, and the closed state tripartite complex bound with tRNA and MRC with mutated SaIleRS (V588F). The present simulation established a dynamic picture of SaIleRS complexed with cognate and the noncognate substrates which are completely consistent with crystallographic and biochemical studies and explain the existing lacunae of knowledge. The active site is significantly more compact in the Ile-AMP bound complex compared to the open state due to the closure of the KMSKS and HMGH loops and clamping down of the tRNA acceptor end near the active site gate. The present result shows that the unusual open conformational state of the KMSKS loop observed in the cognate substrate-bound complex in the crystal is due to crystallographic constraints. Although the mupirocin tightly fits the catalytic active site in the MRC-bound complex, the nonanoic acid moiety is partly exposed to the water. The KMSKS loop is pushed open in the MRC-bound complex to accommodate the noncognate MRC. New tunnels open up, extending to the editing site in the complex. Out of its three broad segments, the C12 to C17 segment, the conjugated segment, and the nonanoic moiety, the conjugated part of MRC binds most effectively with the active site of the MRC-bound complex. The aromatic residues packing around the C12 to C17 segment of MRC stabilize the tRNA hairpin conformation in a similar way as observed in the TrpRS. The V588F mutation is weakening the interaction between this region of the active site and weakens the binding of MRC in the active site. This result explains why the V588F mutation is responsible for low-level mupirocin resistance. The free energy of unbinding the conjugated segment (and C12 to C17 segment, as well) largely contributes to the total free energy of unbinding the MRC. The active site organization of IleRS from eukaryotic Candida albicans is compared with the bacterial IleRS active site to understand the low binding affinity in eukaryotic IleRS. The present study could be a starting point of future studies related to the development of effective drug binding in the SaIleRS.
Collapse
Affiliation(s)
- Shilpi Chowdhury
- Department of Chemistry Kalyani University Kalyani, West Bengal 741235, India
| | - Nilashis Nandi
- Department of Chemistry Kalyani University Kalyani, West Bengal 741235, India
| |
Collapse
|
2
|
De Ruysscher D, Pang L, Mattelaer CA, Nautiyal M, De Graef S, Rozenski J, Strelkov SV, Lescrinier E, Weeks SD, Van Aerschot A. Phenyltriazole-functionalized sulfamate inhibitors targeting tyrosyl- or isoleucyl-tRNA synthetase. Bioorg Med Chem 2020; 28:115580. [DOI: 10.1016/j.bmc.2020.115580] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 05/12/2020] [Accepted: 05/29/2020] [Indexed: 01/30/2023]
|
3
|
Kotian SY, Mohan CD, Merlo AA, Rangappa S, Nayak SC, Rai KL, Rangappa KS. Small molecule based five-membered heterocycles: A view of liquid crystalline properties beyond the biological applications. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2019.111686] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
4
|
Kumar VS, Gudise VB, Reddy EK, Anwar S. XtalFluor‐E: An Efficient Reagent for Synthesis of Oxazolines from Carboxylic Acids and
O
‐Silylated Amino Alcohols. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3642] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Vadiga Shanthi Kumar
- Division of Chemistry, Department of Sciences and HumanitiesVignan's Foundation for Science, Technology & Research‐VFSTR (Deemed to be University) Vadlamudi Guntur 522 213 Andhra Pradesh India
| | - Veera Babu Gudise
- Division of Chemistry, Department of Sciences and HumanitiesVignan's Foundation for Science, Technology & Research‐VFSTR (Deemed to be University) Vadlamudi Guntur 522 213 Andhra Pradesh India
| | - Eeda Koti Reddy
- Division of Chemistry, Department of Sciences and HumanitiesVignan's Foundation for Science, Technology & Research‐VFSTR (Deemed to be University) Vadlamudi Guntur 522 213 Andhra Pradesh India
| | - Shaik Anwar
- Division of Chemistry, Department of Sciences and HumanitiesVignan's Foundation for Science, Technology & Research‐VFSTR (Deemed to be University) Vadlamudi Guntur 522 213 Andhra Pradesh India
| |
Collapse
|
5
|
Venkatagiri N, Krishna T, Thirupathi P, Bhavani K, Reddy CK. Synthesis, Characterization, and Antimicrobial Activity of a Series of 2-(5-Phenyl-1,3,4-oxadiazol-2-yl)-N-[(1-aryl-1H-1,2,3-triazol-4-yl)methyl]anilines Using Click Chemistry. RUSS J GEN CHEM+ 2018. [DOI: 10.1134/s1070363218070228] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
|
6
|
Ramakrishnan G, Chandra N, Srinivasan N. Exploring anti-malarial potential of FDA approved drugs: an in silico approach. Malar J 2017; 16:290. [PMID: 28720135 PMCID: PMC5516367 DOI: 10.1186/s12936-017-1937-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Accepted: 07/13/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The critically important issue on emergence of drug-resistant malarial parasites is compounded by cross resistance, where resistance to one drug confers resistance to other chemically similar drugs or those that share mode of action. This aspect requires discovery of new anti-malarial compounds or formulation of new combination therapy. The current study attempts to contribute towards accelerating anti-malarial drug development efforts, by exploring the potential of existing FDA-approved drugs to target proteins of Plasmodium falciparum. METHODS Using comparative sequence and structure analyses, FDA-approved drugs, originally developed against other pathogens, were identified as potential repurpose-able candidates against P. falciparum. The rationale behind the undertaken approach is the likeliness of small molecules to bind to homologous targets. Such a study of evolutionary relationships between established targets and P. falciparum proteins aided in identification of approved drug candidates that can be explored for their anti-malarial potential. RESULTS Seventy-one FDA-approved drugs were identified that could be repurposed against P. falciparum. A total of 89 potential targets were recognized, of which about 70 are known to participate in parasite housekeeping machinery, protein biosynthesis, metabolic pathways and cell growth and differentiation, which can be prioritized for chemotherapeutic interventions. An additional aspect of prioritization of predicted repurpose-able drugs has been explored on the basis of ability of the drugs to permeate cell membranes, i.e., lipophilicity, since the parasite resides within a parasitophorous vacuole, within the erythrocyte, during the blood stages of infection. Based on this consideration, 46 of 71 FDA-approved drugs have been identified as feasible repurpose-able candidates against P. falciparum, and form a first-line for laboratory investigations. At least five of the drugs identified in the current analysis correspond to existing antibacterial agents already under use as repurposed anti-malarial agents. CONCLUSIONS The drug-target associations predicted, primarily by taking advantage of evolutionary information, provide a valuable resource of attractive and feasible candidate drugs that can be readily taken through further stages of anti-malarial drug development pipeline.
Collapse
Affiliation(s)
- Gayatri Ramakrishnan
- Indian Institute of Science Mathematics Initiative, Indian Institute of Science, Bangalore, 560012, India.,Molecular Biophysics Unit, Indian Institute of Science, Bangalore, 560012, India.,Division of Genetics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, 02115, USA
| | - Nagasuma Chandra
- Department of Biochemistry, Indian Institute of Science, Bangalore, 560012, India
| | | |
Collapse
|
7
|
Liu L, Feng S. Ligand-free Cu(ii)-mediated aerobic oxidations of aldehyde hydrazones leading to N,N'-diacylhydrazines and 1,3,4-oxadiazoles. Org Biomol Chem 2017; 15:2585-2592. [PMID: 28266668 DOI: 10.1039/c7ob00042a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A Cu(ii)-mediated synthesis of N,N'-diacylhydrazines and 1,3,4-oxadiazoles from aldehyde hydrazones has been developed. This is the first time that the synthesis of N,N'-diacylhydrazines and 1,3,4-oxadiazoles using N,N-dimethylamides as the acylation reagent and O2 in air as the oxidation reagent is reported. These reactions offered several advantages including simple workups, ligand-free inexpensive metal salts as mediators, high yields, and wide scope of substrates.
Collapse
Affiliation(s)
- Lei Liu
- Department of Chemistry, School of Science, Tianjin University, 135 Yaguan Road, Jinnan District, Tianjin 300354, P. R. China.
| | - Suliu Feng
- Department of Chemistry, School of Science, Tianjin University, 135 Yaguan Road, Jinnan District, Tianjin 300354, P. R. China.
| |
Collapse
|
8
|
Lawson JR, Melen RL. Tris(pentafluorophenyl)borane and Beyond: Modern Advances in Borylation Chemistry. Inorg Chem 2017; 56:8627-8643. [DOI: 10.1021/acs.inorgchem.6b02911] [Citation(s) in RCA: 153] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- James R. Lawson
- School of Chemistry, Cardiff University, Main Building, Cardiff CF10 3AT, Wales
| | - Rebecca L. Melen
- School of Chemistry, Cardiff University, Main Building, Cardiff CF10 3AT, Wales
| |
Collapse
|
9
|
Soleimani Amiri S, Makarem S, Ahmar H, Ashenagar S. Theoretical studies and spectroscopic characterization of novel 4-methyl-5-((5-phenyl-1,3,4-oxadiazol-2-yl)thio)benzene-1,2-diol. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.04.053] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
10
|
Bay S, Baumeister T, Hashmi ASK, Röder T. Safe and Fast Flow Synthesis of Functionalized Oxazoles with Molecular Oxygen in a Microstructured Reactor. Org Process Res Dev 2016. [DOI: 10.1021/acs.oprd.6b00118] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Sarah Bay
- Organisch-Chemisches
Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer
Feld 270, 69120 Heidelberg, Germany
| | - Tobias Baumeister
- Institute
of Chemical Process Engineering, Mannheim University of Applied Sciences, Paul-Wittsack-Str. 10, 68163 Mannheim, Germany
| | - A. Stephen K. Hashmi
- Organisch-Chemisches
Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer
Feld 270, 69120 Heidelberg, Germany
- Chemistry
Department, Faculty of Science, King Abdulaziz University (KAU), 21589 Jeddah, Saudi Arabia
| | - Thorsten Röder
- Institute
of Chemical Process Engineering, Mannheim University of Applied Sciences, Paul-Wittsack-Str. 10, 68163 Mannheim, Germany
| |
Collapse
|
11
|
Synthesis of new 5-((2-(substituted phenoxymethyl)-1H-benzo[d]imidazol-1-yl)methyl)-1,3,4-oxadiazole-2-thiol: A novel class of potential antibacterial and antifungal agents. ANNALES PHARMACEUTIQUES FRANÇAISES 2015; 73:452-60. [DOI: 10.1016/j.pharma.2015.06.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Revised: 06/01/2015] [Accepted: 06/11/2015] [Indexed: 11/22/2022]
|
12
|
Oxidative cyclization of N-aroylhydrazones to 2-(2-arylethenyl)-1,3,4-oxadiazoles using DDQ as an efficient oxidant. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.09.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
13
|
Study on the synthesis of novel 5-substituted 2-[2-(pyridyl)ethenyl]-1,3,4-oxadiazoles and their acid-base interactions. MONATSHEFTE FUR CHEMIE 2015; 146:303-311. [PMID: 26166897 PMCID: PMC4495023 DOI: 10.1007/s00706-014-1355-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Accepted: 11/10/2014] [Indexed: 01/05/2023]
Abstract
Abstract A series of novel 5-substituted 2-[2-(pyridyl)ethenyl]-1,3,4-oxadiazoles were efficiently synthesized by cyclocondensation of the appropriate 3-(pyridyl)acrylohydrazides with triethyl orthoesters in the presence of glacial acetic acid. The products were identified by means of spectroscopic methods and their pKA ionization constants were determined. The influence of substituents on the basicity of the pyridine system has been discussed. Graphical Abstract ![]() ![]()
Collapse
|
14
|
Avula S, Komsani JR, Koppireddi S, Yadla R. Microwave-assisted Synthesis of 6-{(5-Aryl-1,3,4-oxadiazol-2-yl)methyl}-6H-indolo[2,3-b]quinoxalines. J Heterocycl Chem 2014. [DOI: 10.1002/jhet.2272] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Sreenivas Avula
- Fluoroorganic Division; CSIR-Indian Institute of Chemical Technology; Hyderabad 500607 India
| | - Jayaram Reddy Komsani
- Fluoroorganic Division; CSIR-Indian Institute of Chemical Technology; Hyderabad 500607 India
| | - Satish Koppireddi
- Fluoroorganic Division; CSIR-Indian Institute of Chemical Technology; Hyderabad 500607 India
| | - Rambabu Yadla
- Fluoroorganic Division; CSIR-Indian Institute of Chemical Technology; Hyderabad 500607 India
| |
Collapse
|
15
|
Samimi HA, Shams Z. Regio-controlled and Stereo-controlled Ring Expansion of N-Substituted-2 Benzoylaziridines Using Fe(NO 3) 3. J Heterocycl Chem 2014. [DOI: 10.1002/jhet.1773] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Heshmat A. Samimi
- Department of Chemistry, Faculty of Sciences; University of Shahrekord; PO Box 115 Shahrekord Iran
| | - Zahra Shams
- Department of Chemistry, Faculty of Sciences; University of Shahrekord; PO Box 115 Shahrekord Iran
| |
Collapse
|
16
|
Melen RL. Applications of pentafluorophenyl boron reagents in the synthesis of heterocyclic and aromatic compounds. Chem Commun (Camb) 2014; 50:1161-74. [PMID: 24292326 DOI: 10.1039/c3cc48036d] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Recently, main group reagents have attracted a lot of attention in bond-forming reactions in organic synthesis. This article highlights the use of pentafluorophenyl substituted boron reagents in their reactions with C=C and C≡C π-bonds for the synthesis of heterocyclic and aromatic compounds. These cyclisation reactions fall into four general classes although there is some overlap between classes and often combinations of these different types of reactivity are observed in the formation of the final heterocyclic product: (i) 1,2- (and 1,4-) additions of nucleophile and Lewis-acidic boron centre, (ii) 1,1-carboboration, (iii) carbocation rearrangements and (iv) cycloaddition chemistry. In addition, the prospect of using such boron reagents catalytically in the synthesis of aromatic compounds such as oxazoles and dibenzopentalene derivatives is emphasised.
Collapse
Affiliation(s)
- Rebecca L Melen
- Department of Chemistry, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada.
| |
Collapse
|
17
|
Korbad BL, Lee SH. Solid-Phase Approach for the Synthesis of 2-Amido-1,3,4-oxadiazoles. J Heterocycl Chem 2014. [DOI: 10.1002/jhet.1983] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Balaji L. Korbad
- Department of Life Chemistry; Catholic University of Daegu; Gyeongsan-si Gyeongbuk 712-702 Korea
| | - Sang-Hyeup Lee
- Department of Life Chemistry; Catholic University of Daegu; Gyeongsan-si Gyeongbuk 712-702 Korea
| |
Collapse
|
18
|
Rahman M, Karim MR, Arifuzzaman M, Siddiquee TA, Mirza AH. ZnCl2 catalyzed efficient synthesis of 1,3,4-oxadiazole and 1,3,4-thiadiazole. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.04.046] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
19
|
Melen RL, Hansmann MM, Lough AJ, Hashmi ASK, Stephan DW. Cyclisation versus 1,1-Carboboration: Reactions of B(C6F5)3with Propargyl Amides. Chemistry 2013; 19:11928-38. [DOI: 10.1002/chem.201301899] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Indexed: 11/12/2022]
|
20
|
Hashmi ASK, Blanco Jaimes MC, Schuster AM, Rominger F. From Propargylic Amides to Functionalized Oxazoles: Domino Gold Catalysis/Oxidation by Dioxygen. J Org Chem 2012; 77:6394-408. [DOI: 10.1021/jo301288w] [Citation(s) in RCA: 132] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- A. Stephen K. Hashmi
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg,
Germany
| | - Maria Camila Blanco Jaimes
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg,
Germany
| | - Andreas M. Schuster
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg,
Germany
| | - Frank Rominger
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg,
Germany
| |
Collapse
|
21
|
Modi V, Modi P. Oxadiazole: Synthesis, characterization and biological activities. JOURNAL OF SAUDI CHEMICAL SOCIETY 2012. [DOI: 10.1016/j.jscs.2011.12.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
22
|
Taj T, Kamble RR, Kattimani PP, Badami BV. Synthetic utility of sydnones: synthesis of pyrazolines derivatized with 1,2,4-triazoles as antihyperglymic, antioxidant agents and their DNA cleavage study. Med Chem Res 2011. [DOI: 10.1007/s00044-011-9921-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
23
|
Guin S, Ghosh T, Rout SK, Banerjee A, Patel BK. Cu(II) catalyzed imine C-H functionalization leading to synthesis of 2,5-substituted 1,3,4-oxadiazoles. Org Lett 2011; 13:5976-9. [PMID: 22007797 DOI: 10.1021/ol202409r] [Citation(s) in RCA: 108] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A direct access to symmetrical and unsymmetrical 2,5-disubstituted [1,3,4]-oxadiazoles has been accomplished through an imine C-H functionalization of N-arylidenearoylhydrazide using a catalytic quantity of Cu(OTf)(2). This is the first example of amidic oxygen functioning as a nucleophile in a Cu-catalyzed oxidative coupling of an imine C-H bond. These reactions can be performed in air atmosphere and moisture making it exceptionally practical for application in organic synthesis.
Collapse
Affiliation(s)
- Srimanta Guin
- Department of Chemistry, Indian Institution of Technology Guwahati, Guwahati 781 039, India
| | | | | | | | | |
Collapse
|
24
|
Jin YX, Zhong AG, Zhang YJ, Pan FY. Synthesis, crystal structure, spectroscopic properties, antibacterial activity and theoretical studies of a novel difunctional acylhydrazone. J Mol Struct 2011. [DOI: 10.1016/j.molstruc.2011.06.042] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
25
|
Mandhane PG, Joshi RS, Khan W, Gill CH. Synthesis and Antibacterial Evaluation of Some Novel 1,3,4-oxadiazol Derivatives Incorporated with Quinoline Moiety. JOURNAL OF THE KOREAN CHEMICAL SOCIETY-DAEHAN HWAHAK HOE JEE 2011. [DOI: 10.5012/jkcs.2011.55.4.656] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
26
|
Xie Y, Liu J, Yang P, Shi X, Li J. Synthesis of 2-amino-1,3,4-oxadiazoles from isoselenocyanates via cyclodeselenization. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.05.100] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
27
|
A natural plasmid uniquely encodes two biosynthetic pathways creating a potent anti-MRSA antibiotic. PLoS One 2011; 6:e18031. [PMID: 21483852 PMCID: PMC3069032 DOI: 10.1371/journal.pone.0018031] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2010] [Accepted: 02/18/2011] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Understanding how complex antibiotics are synthesised by their producer bacteria is essential for creation of new families of bioactive compounds. Thiomarinols, produced by marine bacteria belonging to the genus Pseudoalteromonas, are hybrids of two independently active species: the pseudomonic acid mixture, mupirocin, which is used clinically against MRSA, and the pyrrothine core of holomycin. METHODOLOGY/PRINCIPAL FINDINGS High throughput DNA sequencing of the complete genome of the producer bacterium revealed a novel 97 kb plasmid, pTML1, consisting almost entirely of two distinct gene clusters. Targeted gene knockouts confirmed the role of these clusters in biosynthesis of the two separate components, pseudomonic acid and the pyrrothine, and identified a putative amide synthetase that joins them together. Feeding mupirocin to a mutant unable to make the endogenous pseudomonic acid created a novel hybrid with the pyrrothine via "mutasynthesis" that allows inhibition of mupirocin-resistant isoleucyl-tRNA synthetase, the mupirocin target. A mutant defective in pyrrothine biosynthesis was also able to incorporate alternative amine substrates. CONCLUSIONS/SIGNIFICANCE Plasmid pTML1 provides a paradigm for combining independent antibiotic biosynthetic pathways or using mutasynthesis to develop a new family of hybrid derivatives that may extend the effective use of mupirocin against MRSA.
Collapse
|
28
|
Sharma GVM, Begum A, Rakesh, Krishna PR. Zirconium(IV) Chloride Mediated Cyclodehydration of 1,2‐Diacylhydrazines: A Convenient Synthesis of 2,5‐Diaryl 1,3,4‐Oxadiazoles. SYNTHETIC COMMUN 2011. [DOI: 10.1081/scc-120039492] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- G. V. M. Sharma
- a Discovery Laboratory, Organic Chemistry Division‐III , Indian Institute of Chemical Technology , Hyderabad, 500 007, India
| | - Asra Begum
- a Discovery Laboratory, Organic Chemistry Division‐III , Indian Institute of Chemical Technology , Hyderabad, 500 007, India
| | - Rakesh
- a Discovery Laboratory, Organic Chemistry Division‐III , Indian Institute of Chemical Technology , Hyderabad, 500 007, India
| | - Palakodety Radha Krishna
- a Discovery Laboratory, Organic Chemistry Division‐III , Indian Institute of Chemical Technology , Hyderabad, 500 007, India
| |
Collapse
|
29
|
Paradise CL, Sarkar PR, Razzak M, De Brabander JK. Gold-catalysed synthesis of amino acid-derived 2,5-disubstituted oxazoles. Org Biomol Chem 2011; 9:4017-20. [DOI: 10.1039/c1ob05390f] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
30
|
Abu-Zaied MA, El-Telbani EM, Elgemeie GH, Nawwar GAM. Synthesis and in vitro anti-tumor activity of new oxadiazole thioglycosides. Eur J Med Chem 2010; 46:229-35. [PMID: 21115211 DOI: 10.1016/j.ejmech.2010.11.008] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2010] [Revised: 11/03/2010] [Accepted: 11/05/2010] [Indexed: 01/02/2023]
Abstract
A facile, convenient and high yielding synthesis of novel thioglycosides incorporating 1,3,4-oxadiazole, triazole and or triazine moieties from readily available starting materials has been described. The key step of this protocol is the formation of 3-isobutyl-1-phenyl-1H-pyrazole-4-carbaldehyde (3) via condensation between methyl iso-butyl ketone and phenylhydrazine followed by application of Vilsmeier-Haack reaction. 3 was converted either to 1,3,4-oxadiazole derivative or condensed with O-aminothiols to give the bases 8, 19 and 20 in good yields, respectively. The aglycons 8, 19, and 20 were coupled with different activated halosugars in the presence of basic medium. Pharmacological evaluation of compounds 8, 14, 16 and 22 in vitro against 2-cell lines MCF-7 (breast) and HEPG2 (liver) revealed them to possess high anti-tumor activities with IC(50) values ranging from 2.67-20.25 (μg/mL) for breast cell line (MCF-7) and 4.62-43.6 (μg/mL) for liver cell line (HEPG2). None of the tested compounds exhibited any toxicity in doses up to 500 mg kg(-1) of the animal body weight.
Collapse
Affiliation(s)
- M A Abu-Zaied
- National Research Centre, Green Chemistry Department, 12622 Dokki, Cairo, Egypt
| | | | | | | |
Collapse
|
31
|
Xiang Y, Hirth B, Kane JL, Liao J, Noson KD, Yee C, Asmussen G, Fitzgerald M, Klaus C, Booker M. Discovery of novel sphingosine kinase-1 inhibitors. Part 2. Bioorg Med Chem Lett 2010; 20:4550-4. [PMID: 20598880 DOI: 10.1016/j.bmcl.2010.06.019] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2010] [Revised: 06/01/2010] [Accepted: 06/03/2010] [Indexed: 11/16/2022]
Abstract
Building on our initial work, we have identified additional novel inhibitors of sphingosine kinase-1 (SK1). These new analogs address the shortcomings found in our previously reported compounds. Inhibitors 51 and 54 demonstrated oral bioavailability in a rat PK study.
Collapse
Affiliation(s)
- Yibin Xiang
- Department of Medicinal Chemistry, Drug and Biomaterial R&D, Genzyme Corporation, Waltham, MA 02451, USA.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
32
|
Gong YD, Lee T. Combinatorial Syntheses of Five-Membered Ring Heterocycles Using Carbon Disulfide and a Solid Support. ACTA ACUST UNITED AC 2010; 12:393-409. [DOI: 10.1021/cc100049u] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Young-Dae Gong
- Innovative Drug Library Research Center, Department of Chemistry, Dongguk University-Seoul, 26 Pildong 3-ga, Jung-gu, Seoul 100-715, Korea, and Center for High Throughput Synthesis Platform Technology, Korea Research Institute of Chemical Technology, P.O. Box 107, Singseongno, Yuseong-gu, Daejeon 305-600, Korea
| | - Taeho Lee
- Innovative Drug Library Research Center, Department of Chemistry, Dongguk University-Seoul, 26 Pildong 3-ga, Jung-gu, Seoul 100-715, Korea, and Center for High Throughput Synthesis Platform Technology, Korea Research Institute of Chemical Technology, P.O. Box 107, Singseongno, Yuseong-gu, Daejeon 305-600, Korea
| |
Collapse
|
33
|
Pokhodylo NT, Shiika OY, Matiichuk VS, Obushak ND. Synthesis of [5-(1H-1,2,3-triazol-4-yl)-1,3,4-oxadiazol-2-yl]pyridines. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2010. [DOI: 10.1134/s1070428010030206] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
34
|
Abstract
Mupirocin, a polyketide antibiotic produced by Pseudomonas fluorescens, is used to control the carriage of methicillin-resistant Staphylococcus aureus on skin and in nasal passages as well as for various skin infections. Low-level resistance to the antibiotic arises by mutation of the mupirocin target, isoleucyl-tRNA synthetase, whereas high-level resistance is due to the presence of an isoleucyl-tRNA synthetase with many similarities to eukaryotic enzymes. Mupirocin biosynthesis is carried out by a combination of type I multifunctional polyketide synthases and tailoring enzymes encoded in a 75 kb gene cluster. Chemical synthesis has also been achieved. This knowledge should allow the synthesis of new and modified antibiotics for the future.
Collapse
|
35
|
Badri R, Gorjizadeh M. A Novel, One-Pot Synthesis of 2,5-Disubstituted-1,3,4-Oxadiazoles Using 1,4-Bis(Triphenylphosphonium)-2-Butene Peroxodisulfate. PHOSPHORUS SULFUR 2010. [DOI: 10.1080/10426500902840887] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Rashid Badri
- a Department of Chemistry , Shahid Chamran University , Ahvaz, Iran
| | | |
Collapse
|
36
|
Wang LN, Han D, Xu FF, Meng XB, Li ZJ. Microwave-assisted efficient synthesis of glucose-based 3-acetyl-5-alkyl-2,3-dihydro-1,3,4-oxadiazole derivatives catalyzed by sodium acetate. Carbohydr Res 2009; 344:2113-9. [DOI: 10.1016/j.carres.2009.07.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2009] [Revised: 07/15/2009] [Accepted: 07/23/2009] [Indexed: 11/26/2022]
|
37
|
Propylphosphonic anhydride (T3P®): an efficient reagent for the one-pot synthesis of 1,2,4-oxadiazoles, 1,3,4-oxadiazoles, and 1,3,4-thiadiazoles. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.09.114] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
38
|
Affiliation(s)
- Yaşar Dürüst
- a Department of Chemistry , Abant İzzet Baysal University , Bolu, Turkey
| |
Collapse
|
39
|
A novel and direct synthesis of 1,3,4-oxadiazoles or oxazolines from carboxylic acids using cyanuric chloride/indium. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.07.032] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
40
|
An efficient synthesis and biological study of novel indolyl-1,3,4-oxadiazoles as potent anticancer agents. Bioorg Med Chem Lett 2009; 19:4492-4. [DOI: 10.1016/j.bmcl.2009.03.172] [Citation(s) in RCA: 121] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2009] [Revised: 03/17/2009] [Accepted: 03/26/2009] [Indexed: 11/19/2022]
|
41
|
Fakhari AR, Hosseiny Davarani SS, Ahmar H, Hasheminasab K, Khavasi HR. A facile electrochemical method for the synthesis of 5-phenyl-1,3,4-oxadiazol-2-ylthio-benzene-1,2-diol derivatives. J Heterocycl Chem 2009. [DOI: 10.1002/jhet.86] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
42
|
Han D, Meng XB, Wang LN, Liu H, Yao Y, Wang Z, Yang ZJ, Liu ZM, Li ZJ. Efficient synthesis of a series of novel fructose-based 3-acetyl-5-alkyl-2,3-dihydro-1,3,4-oxadiazole derivatives and studies of the reaction mechanism. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.tetasy.2008.12.033] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
43
|
Synthesis and preliminary antibacterial evaluation of simplified thiomarinol analogs. Bioorg Med Chem 2009; 17:1006-17. [DOI: 10.1016/j.bmc.2008.01.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2007] [Accepted: 01/04/2008] [Indexed: 11/23/2022]
|
44
|
Nicolaou K, Chen J, Edmonds D, Estrada A. Fortschritte in der Chemie und Biologie natürlicher Antibiotika. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200801695] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
45
|
Chiang KC, Wong FF, Hung CH, Huang YY, Chang PW, Yang-Ming L, Shao-Kai L. Mild oxidative cyclization of sydnone-benzoylhydrazone with lead oxide to 2,5-disubstituted-1,3,4-oxadiazole-sydnone hybrid derivatives. J Heterocycl Chem 2009. [DOI: 10.1002/jhet.21] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
46
|
Nicolaou KC, Chen JS, Edmonds DJ, Estrada AA. Recent advances in the chemistry and biology of naturally occurring antibiotics. Angew Chem Int Ed Engl 2009; 48:660-719. [PMID: 19130444 PMCID: PMC2730216 DOI: 10.1002/anie.200801695] [Citation(s) in RCA: 184] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Ever since the world-shaping discovery of penicillin, nature's molecular diversity has been extensively screened for new medications and lead compounds in drug discovery. The search for agents intended to combat infectious diseases has been of particular interest and has enjoyed a high degree of success. Indeed, the history of antibiotics is marked with impressive discoveries and drug-development stories, the overwhelming majority of which have their origin in natural products. Chemistry, and in particular chemical synthesis, has played a major role in bringing naturally occurring antibiotics and their derivatives to the clinic, and no doubt these disciplines will continue to be key enabling technologies. In this review article, we highlight a number of recent discoveries and advances in the chemistry, biology, and medicine of naturally occurring antibiotics, with particular emphasis on total synthesis, analogue design, and biological evaluation of molecules with novel mechanisms of action.
Collapse
Affiliation(s)
- K C Nicolaou
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.
| | | | | | | |
Collapse
|
47
|
Obushak ND, Pokhodylo NT, Pidlypnyi NI, Matiichuk VS. Synthesis of 1,2,4- and 1,3,4-oxadiazoles from 1-aryl-5-methyl-1H-1,2,3-triazole-4-carbonyl chlorides. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2008. [DOI: 10.1134/s1070428008100217] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
48
|
Zarudnitskii EV, Pervak II, Merkulov AS, Yurchenko AA, Tolmachev AA. Trimethylsilyl-1,3,4-oxadiazoles—new useful synthons for the synthesis of various 2,5-disubstituted-1,3,4-oxadiazoles. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.08.040] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
49
|
Novel and orally active 5-(1,3,4-oxadiazol-2-yl)pyrimidine derivatives as selective FLT3 inhibitors. Bioorg Med Chem Lett 2008; 18:5472-7. [PMID: 18835166 DOI: 10.1016/j.bmcl.2008.09.031] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2008] [Revised: 08/26/2008] [Accepted: 09/06/2008] [Indexed: 11/20/2022]
Abstract
5-(1,3,4-Oxadiazol-2-yl)pyrimidine derivative 1 was identified as a new class of FLT3 inhibitor from our compound library. With the aim of enhancement of antitumor activity of 2 prepared by minor modification of 1, structure optimization of side chains at the 2-, 4-, and 5-positions of the pyrimidine ring of 2 was performed to improve the metabolic stability. Introduction of polar substituents on the 1,3,4-oxadiazolyl group contributed to a significant increase in the metabolic stability. As a result, a series of compounds showed increased efficacy against MOLM-13 xenograft model in mice by oral administration.
Collapse
|
50
|
Sapijanskaite B, Mickevičius V. Synthesis of 1-(9-butylcarbazol-3-yl)-5-oxopyrrolidine-3-carboxylic acid derivatives. Chem Heterocycl Compd (N Y) 2008. [DOI: 10.1007/s10593-008-0113-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|