351
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Dos Santos AF, Cristiano R, Athayde-Filho PF, Bortoluzzi AJ. 2-(5-Methyl-1,3,4-oxa-diazol-2-yl)phenyl acetate. Acta Crystallogr Sect E Struct Rep Online 2014; 70:o559. [PMID: 24860366 PMCID: PMC4011247 DOI: 10.1107/s1600536814007946] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Accepted: 04/09/2014] [Indexed: 11/20/2022]
Abstract
In the title compound, C11H10N2O3, which is a potential bioactive compound, the benzene and oxadiazole rings are approximately coplanar, with an inter-ring dihedral angle of 4.14 (2)°, while the ester plane is rotated out of the benzene plane [dihedral angle = 82.69 (9)°]. In the crystal, the molecules form layers down the a axis with weak π–π interactions between the oxadiazole and benzene rings [minimum ring centroid separation = 3.7706 (14) Å].
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Affiliation(s)
- Alexsandro F Dos Santos
- Depto. de Química - Campus I - Universidade Federal da Paraíba, 58051-900 - João Pessoa, PB, Brazil
| | - Rodrigo Cristiano
- Depto. de Química - Campus I - Universidade Federal da Paraíba, 58051-900 - João Pessoa, PB, Brazil
| | - Petrônio F Athayde-Filho
- Depto. de Química - Campus I - Universidade Federal da Paraíba, 58051-900 - João Pessoa, PB, Brazil
| | - Adailton J Bortoluzzi
- Depto. de Química - Universidade Federal de Santa Catarina, 88040-900 - Florianópolis, Santa Catarina, Brazil
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352
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Bansal S, Bala M, Suthar SK, Choudhary S, Bhattacharya S, Bhardwaj V, Singla S, Joseph A. Design and synthesis of novel 2-phenyl-5-(1,3-diphenyl-1H-pyrazol-4-yl)-1,3,4-oxadiazoles as selective COX-2 inhibitors with potent anti-inflammatory activity. Eur J Med Chem 2014; 80:167-74. [PMID: 24780593 DOI: 10.1016/j.ejmech.2014.04.045] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2013] [Revised: 04/09/2014] [Accepted: 04/14/2014] [Indexed: 10/25/2022]
Abstract
A novel series of 2-phenyl-5-(1,3-diphenyl-1H-pyrazol-4-yl)-1,3,4-oxadiazoles were designed and synthesized for selective COX-2 inhibition with potent anti-inflammatory activity. Among the compounds tested, 9g (2-(3-(4-nitrophenyl)-1-phenyl-1H-pyrazol-4-yl)-5-phenyl-1,3,4-oxadiazole) was found to be the most potent inhibitor of COX-2 with IC50 of 0.31 μM showing promising degree of anti-inflammatory activity in the carrageenan-induced rat paw edema model with ED50 of 74.3 mg/kg. The lead compound 9g further showed suppression of acetic acid-induced writhes comparable to that of aspirin and gastro-sparing profile superior to the aspirin. Molecular docking analysis displayed higher binding affinity of ligands towards COX-2 than COX-1.
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Affiliation(s)
- Sumit Bansal
- School of Pharmaceutical Sciences, Shoolini University, Solan, Himachal Pradesh, India.
| | - Manju Bala
- School of Pharmaceutical Sciences, Jaipur National University, Jaipur 302017, India
| | - Sharad Kumar Suthar
- Department of Pharmaceutical Chemistry, Manipal College of Pharmaceutical Sciences, Manipal 576104, India.
| | - Shivani Choudhary
- Doon Valley Institute of Pharmacy and Medicine, Karnal, Haryana 132001, India
| | - Shoumyo Bhattacharya
- School of Pharmaceutical Sciences, Shoolini University, Solan, Himachal Pradesh, India
| | - Varun Bhardwaj
- Department of Pharmaceutical Chemistry, ASBASJSM College of Pharmacy, Bela, Ropar, Punjab 140111, India
| | - Sumit Singla
- Department of Pharmaceutical Chemistry, Rajendra Institute of Technology & Sciences, Sirsa, Haryana, India
| | - Alex Joseph
- Department of Pharmaceutical Chemistry, Manipal College of Pharmaceutical Sciences, Manipal 576104, India
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353
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Basham KJ, Bhonde VR, Kieffer C, Mack JBC, Hess M, Welm BE, Looper RE. Bis-aryloxadiazoles as effective activators of the aryl hydrocarbon receptor. Bioorg Med Chem Lett 2014; 24:2473-6. [PMID: 24767852 DOI: 10.1016/j.bmcl.2014.04.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Revised: 04/02/2014] [Accepted: 04/04/2014] [Indexed: 12/19/2022]
Abstract
Bis-aryloxadiazoles are common scaffolds in medicinal chemistry due to their wide range of biological activities. Previously, we identified a 1,2,4-bis-aryloxadiazole that blocks mammary branching morphogenesis through activation of the aryl hydrocarbon receptor (AHR). In addition to defects in mammary differentiation, AHR stimulation induces toxicity in many other tissues. We performed a structure activity relationship (SAR) study of 1,2,4-bis-aryloxadiazole to determine which moieties of the molecule are critical for AHR activation. We validated our results with a functional biological assay, using desmosome formation during mammary morphogenesis to indicate AHR activity. These findings will aid the design of oxadiazole derivative therapeutics with reduced off-target toxicity profiles.
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Affiliation(s)
- Kaitlin J Basham
- Department of Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84112, USA
| | - Vasudev R Bhonde
- Department of Chemistry, University of Utah, Salt Lake City, UT 84112, USA
| | - Collin Kieffer
- Department of Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84112, USA
| | - James B C Mack
- Department of Chemistry, University of Utah, Salt Lake City, UT 84112, USA
| | - Matthew Hess
- Department of Chemistry, University of Utah, Salt Lake City, UT 84112, USA
| | - Bryan E Welm
- Department of Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84112, USA; Department of Surgery, University of Utah, Salt Lake City, UT 84112, USA
| | - Ryan E Looper
- Department of Chemistry, University of Utah, Salt Lake City, UT 84112, USA.
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354
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Fang T, Tan Q, Ding Z, Liu B, Xu B. Pd-catalyzed oxidative annulation of hydrazides with isocyanides: synthesis of 2-amino-1,3,4-oxadiazoles. Org Lett 2014; 16:2342-5. [PMID: 24725151 DOI: 10.1021/ol5006449] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
An efficient palladium-catalyzed oxidative annulation reaction was developed through sequential isocyanide insertions into N-H and O-H bonds of hydrazides, which provides an efficient access to valuable 2-amino-1,3,4-oxadiazoles and their derivatives.
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Affiliation(s)
- Tao Fang
- Department of Chemistry, Innovative Drug Research Center, Shanghai University , Shanghai 200444, China
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355
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Conole D, Beck TM, Jay-Smith M, Tingle MD, Eason CT, Brimble MA, Rennison D. Synthesis and methemoglobinemia-inducing properties of benzocaine isosteres designed as humane rodenticides. Bioorg Med Chem 2014; 22:2220-35. [DOI: 10.1016/j.bmc.2014.02.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Revised: 02/03/2014] [Accepted: 02/11/2014] [Indexed: 11/30/2022]
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356
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Browne L, Lidster K, Al-Izki S, Clutterbuck L, Posada C, Chan AWE, Riddall D, Garthwaite J, Baker D, Selwood DL. Imidazol-1-ylethylindazole voltage-gated sodium channel ligands are neuroprotective during optic neuritis in a mouse model of multiple sclerosis. J Med Chem 2014; 57:2942-52. [PMID: 24601592 PMCID: PMC4010550 DOI: 10.1021/jm401881q] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A series of imidazol-1-ylethylindazole sodium channel ligands were developed and optimized for sodium channel inhibition and in vitro neuroprotective activity. The molecules exhibited displacement of a radiolabeled sodium channel ligand and selectivity for blockade of the inactivated state of cloned neuronal Nav channels. Metabolically stable analogue 6 was able to protect retinal ganglion cells during optic neuritis in a mouse model of multiple sclerosis.
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Affiliation(s)
- Lorcan Browne
- Biological and Medicinal Chemistry, Wolfson Institute for Biomedical Science, University College London , Gower Street, London WC1E 6BT, United Kingdom
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357
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Rackham MD, Brannigan JA, Rangachari K, Meister S, Wilkinson AJ, Holder AA, Leatherbarrow RJ, Tate EW. Design and synthesis of high affinity inhibitors of Plasmodium falciparum and Plasmodium vivax N-myristoyltransferases directed by ligand efficiency dependent lipophilicity (LELP). J Med Chem 2014; 57:2773-88. [PMID: 24641010 PMCID: PMC4048319 DOI: 10.1021/jm500066b] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
N-Myristoyltransferase (NMT) is an essential eukaryotic enzyme and an attractive drug target in parasitic infections such as malaria. We have previously reported that 2-(3-(piperidin-4-yloxy)benzo[b]thiophen-2-yl)-5-((1,3,5-trimethyl-1H-pyrazol-4-yl)methyl)-1,3,4-oxadiazole (34c) is a high affinity inhibitor of both Plasmodium falciparum and P. vivax NMT and displays activity in vivo against a rodent malaria model. Here we describe the discovery of 34c through optimization of a previously described series. Development, guided by targeting a ligand efficiency dependent lipophilicity (LELP) score of less than 10, yielded a 100-fold increase in enzyme affinity and a 100-fold drop in lipophilicity with the addition of only two heavy atoms. 34c was found to be equipotent on chloroquine-sensitive and -resistant cell lines and on both blood and liver stage forms of the parasite. These data further validate NMT as an exciting drug target in malaria and support 34c as an attractive tool for further optimization.
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Affiliation(s)
- Mark D Rackham
- Department of Chemistry, Imperial College London , London SW7 2AZ, U.K
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358
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Lentini L, Melfi R, Di Leonardo A, Spinello A, Barone G, Pace A, Palumbo Piccionello A, Pibiri I. Toward a rationale for the PTC124 (Ataluren) promoted readthrough of premature stop codons: a computational approach and GFP-reporter cell-based assay. Mol Pharm 2014; 11:653-64. [PMID: 24483936 PMCID: PMC4167060 DOI: 10.1021/mp400230s] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Revised: 12/17/2013] [Accepted: 01/31/2014] [Indexed: 01/28/2023]
Abstract
The presence in the mRNA of premature stop codons (PTCs) results in protein truncation responsible for several inherited (genetic) diseases. A well-known example of these diseases is cystic fibrosis (CF), where approximately 10% (worldwide) of patients have nonsense mutations in the CF transmembrane regulator (CFTR) gene. PTC124 (3-(5-(2-fluorophenyl)-1,2,4-oxadiazol-3-yl)-benzoic acid), also known as Ataluren, is a small molecule that has been suggested to allow PTC readthrough even though its target has yet to be identified. In the lack of a general consensus about its mechanism of action, we experimentally tested the ability of PTC124 to promote the readthrough of premature termination codons by using a new reporter. The reporter vector was based on a plasmid harboring the H2B histone coding sequence fused in frame with the green fluorescent protein (GFP) cDNA, and a TGA stop codon was introduced in the H2B-GFP gene by site-directed mutagenesis. Additionally, an unprecedented computational study on the putative supramolecular interaction between PTC124 and an 11-codon (33-nucleotides) sequence corresponding to a CFTR mRNA fragment containing a central UGA nonsense mutation showed a specific interaction between PTC124 and the UGA codon. Altogether, the H2B-GFP-opal based assay and the molecular dynamics (MD) simulation support the hypothesis that PTC124 is able to promote the specific readthrough of internal TGA premature stop codons.
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Affiliation(s)
- Laura Lentini
- Dipartimento
di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche, Università degli Studi di Palermo, Viale delle Scienze Ed. 17, 90128 Palermo, Italy
| | - Raffaella Melfi
- Dipartimento
di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche, Università degli Studi di Palermo, Viale delle Scienze Ed. 17, 90128 Palermo, Italy
| | - Aldo Di Leonardo
- Dipartimento
di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche, Università degli Studi di Palermo, Viale delle Scienze Ed. 17, 90128 Palermo, Italy
- Centro di OncoBiologia
Sperimentale (COBS), via San Lorenzo
Colli, 90145 Palermo, Italy
| | - Angelo Spinello
- Dipartimento
di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche, Università degli Studi di Palermo, Viale delle Scienze Ed. 17, 90128 Palermo, Italy
| | - Giampaolo Barone
- Dipartimento
di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche, Università degli Studi di Palermo, Viale delle Scienze Ed. 17, 90128 Palermo, Italy
- Istituto EuroMediterraneo
di Scienza e Tecnologia (IEMEST), Via
Emerico Amari 123, 90139 Palermo, Italy
| | - Andrea Pace
- Dipartimento
di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche, Università degli Studi di Palermo, Viale delle Scienze Ed. 17, 90128 Palermo, Italy
- Istituto EuroMediterraneo
di Scienza e Tecnologia (IEMEST), Via
Emerico Amari 123, 90139 Palermo, Italy
| | - Antonio Palumbo Piccionello
- Dipartimento
di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche, Università degli Studi di Palermo, Viale delle Scienze Ed. 17, 90128 Palermo, Italy
| | - Ivana Pibiri
- Dipartimento
di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche, Università degli Studi di Palermo, Viale delle Scienze Ed. 17, 90128 Palermo, Italy
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359
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Li Q, Tao Y, Xu D, Zhang H, Duan L. One-pot Synthesis of 2,5-Disubstituted-1,3,4-oxadiazoles Based on the Reaction ofN,N-Dimethyl Amides with Acid Hydrazides. J CHIN CHEM SOC-TAIP 2014. [DOI: 10.1002/jccs.201300598] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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360
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Guo J, Hua R, Sui Y, Cao J. Synthesis of 3,5-disubstituted 1,2,4-oxadiazoles and their behavior of liquid crystallines. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.01.066] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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361
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Meanwell NA. The Influence of Bioisosteres in Drug Design: Tactical Applications to Address Developability Problems. TACTICS IN CONTEMPORARY DRUG DESIGN 2014; 9. [PMCID: PMC7416817 DOI: 10.1007/7355_2013_29] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The application of bioisosteres in drug discovery is a well-established design concept that has demonstrated utility as an approach to solving a range of problems that affect candidate optimization, progression, and durability. In this chapter, the application of isosteric substitution is explored in a fashion that focuses on the development of practical solutions to problems that are encountered in typical optimization campaigns. The role of bioisosteres to affect intrinsic potency and selectivity, influence conformation, solve problems associated with drug developability, including P-glycoprotein recognition, modulating basicity, solubility, and lipophilicity, and to address issues associated with metabolism and toxicity is used as the underlying theme to capture a spectrum of creative applications of structural emulation in the design of drug candidates.
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362
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Gupta PK, Hussain MK, Asad M, Kant R, Mahar R, Shukla SK, Hajela K. A metal-free tandem approach to prepare structurally diverse N-heterocycles: synthesis of 1,2,4-oxadiazoles and pyrimidinones. NEW J CHEM 2014. [DOI: 10.1039/c4nj00361f] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
N-heterocycles, namely 1,2,4-oxadiazoles and 2,6 disubstituted pyrimidin-4-ones, have been synthesised in one pot via carboxamidation of amidines with aryl carboxylic acids and aryl propargylic acids under metal-free conditions.
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Affiliation(s)
- Puneet K. Gupta
- Division of Medicinal and Process Chemistry
- CSIR-Central Drug Research Institute
- Lucknow 226031, India
| | - Mohd. Kamil Hussain
- Division of Medicinal and Process Chemistry
- CSIR-Central Drug Research Institute
- Lucknow 226031, India
| | - Mohd. Asad
- Division of Medicinal and Process Chemistry
- CSIR-Central Drug Research Institute
- Lucknow 226031, India
| | - Ruchir Kant
- Molecular and Structural Biology Division
- CSIR-Central Drug Research Institute
- Lucknow 226031, India
| | - Rohit Mahar
- Sophisticated Analytical Instrument Facility
- CSIR-Central Drug Research Institute
- Lucknow 226031, India
| | - Sanjeev K. Shukla
- Sophisticated Analytical Instrument Facility
- CSIR-Central Drug Research Institute
- Lucknow 226031, India
| | - Kanchan Hajela
- Division of Medicinal and Process Chemistry
- CSIR-Central Drug Research Institute
- Lucknow 226031, India
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363
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Rafique J, Saba S, Rosário AR, Zeni G, Braga AL. K2CO3-mediated, direct C–H bond selenation and thiolation of 1,3,4-oxadiazoles in the absence of metal catalyst: an eco-friendly approach. RSC Adv 2014. [DOI: 10.1039/c4ra10490k] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An eco-friendly, straightforward and high-yielding methodology for the synthesis of chalcogenyl oxadiazoles via the K2CO3-promoted direct C–H bond chalcogenation of 2-substituted-1,3,4-oxadiazoles is described herein.
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Affiliation(s)
- Jamal Rafique
- Departamento de Química
- Universidade Federal de Santa Catarina
- Florianópolis 88040-900, Brazil
| | - Sumbal Saba
- Departamento de Química
- Universidade Federal de Santa Catarina
- Florianópolis 88040-900, Brazil
| | - Alisson R. Rosário
- Departamento de Química
- Universidade Federal de Santa Catarina
- Florianópolis 88040-900, Brazil
| | - Gilson Zeni
- Departamento de Química
- Universidade Federal de Santa Maria
- Santa Maria 97105-900, Brazil
| | - Antonio L. Braga
- Departamento de Química
- Universidade Federal de Santa Catarina
- Florianópolis 88040-900, Brazil
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364
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Otaka H, Ikeda J, Tanaka D, Tobe M. Construction of 3,5-substituted 1,2,4-oxadiazole rings triggered by tetrabutylammonium hydroxide: a highly efficient and fluoride-free ring closure reaction of O-acylamidoximes. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2013.12.016] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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365
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366
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Bolli MH, Abele S, Birker M, Bravo R, Bur D, de Kanter R, Kohl C, Grimont J, Hess P, Lescop C, Mathys B, Müller C, Nayler O, Rey M, Scherz M, Schmidt G, Seifert J, Steiner B, Velker J, Weller T. Novel S1P(1) receptor agonists--part 3: from thiophenes to pyridines. J Med Chem 2013; 57:110-30. [PMID: 24367923 DOI: 10.1021/jm4014696] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
In preceding communications we summarized our medicinal chemistry efforts leading to the identification of potent, selective, and orally active S1P1 agonists such as the thiophene derivative 1. As a continuation of these efforts, we replaced the thiophene in 1 by a 2-, 3-, or 4-pyridine and obtained less lipophilic, potent, and selective S1P1 agonists (e.g., 2) efficiently reducing blood lymphocyte count in the rat. Structural features influencing the compounds' receptor affinity profile and pharmacokinetics are discussed. In addition, the ability to penetrate brain tissue has been studied for several compounds. As a typical example for these pyridine based S1P1 agonists, compound 53 showed EC50 values of 0.6 and 352 nM for the S1P1 and S1P3 receptor, respectively, displayed favorable PK properties, and penetrated well into brain tissue. In the rat, compound 53 maximally reduced the blood lymphocyte count for at least 24 h after oral dosing of 3 mg/kg.
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Affiliation(s)
- Martin H Bolli
- Drug Discovery Chemistry, Actelion Pharmaceuticals Ltd. , Gewerbestrasse 16, CH-4123 Allschwil, Switzerland
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367
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Khan I, Ibrar A, Abbas N. Oxadiazoles as privileged motifs for promising anticancer leads: recent advances and future prospects. Arch Pharm (Weinheim) 2013; 347:1-20. [PMID: 24265208 DOI: 10.1002/ardp.201300231] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Revised: 09/08/2013] [Accepted: 09/11/2013] [Indexed: 12/11/2022]
Abstract
Taking into account the rising trend of the incidence of cancers of various organs, effective therapies are urgently needed to control human malignancies. The rapid emergence of hundreds of new agents that modulate an ever-growing list of cancer-specific molecular targets offers tremendous hope for cancer patients. However, almost all of the chemotherapy drugs currently on the market cause serious side effects. Based on these facts, the design of new chemical entities as anticancer agents requires the simulation of a suitable bioactive pharmacophore. The pharmacophore not only should have the required potency but must also be safer on normal cell lines than on tumor cells. In this perspective, oxadiazole scaffolds with well-defined anticancer activity profile have fueled intense academic and industrial research in recent years. This paper is intended to highlight the recent advances along with current developments as well as future outlooks for the design of novel and efficacious anticancer agents based on oxadiazole motifs.
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Affiliation(s)
- Imtiaz Khan
- Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
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368
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Tatum NJ, Villemagne B, Willand N, Deprez B, Liebeschuetz JW, Baulard AR, Pohl E. Structural and docking studies of potent ethionamide boosters. Acta Crystallogr C 2013; 69:1243-50. [DOI: 10.1107/s0108270113028126] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Accepted: 10/13/2013] [Indexed: 12/17/2022] Open
Abstract
Tuberculosis remains the second only to HIV as the leading cause of death by infectious disease worldwide, and was responsible for 1.4 million deaths globally in 2011. One of the essential drugs of the second-line antitubercular regimen is the prodrug ethionamide, introduced in the 1960s. Ethionamide is primarily used in cases of multi-drug resistant (MDR) and extensively drug resistant (XDR) TB due to severe adverse side effects. As a prodrug, ethionamide is bioactivated by EthA, a mono-oxygenase whose activity is repressed by EthR, a member of the TetR family of regulators. Previous studies have established that inhibition of EthR improves ethionamide potency. We report here the crystal structures of three EthR inhibitors at 0.8 Å resolution (3-oxo-3-{4-[3-(thiophen-2-yl)-1,2,4-oxadiazol-5-yl]piperidin-1-yl}propanenitrile (BDM31343), 4,4,4-trifluoro-1-{4-[3-(6-methoxy-1,3-benzothiazol-2-yl)-1,2,4-oxadiazol-5-yl]piperidin-1-yl}butanone (BDM41325) and 5,5,5-trifluoro-1-{4-[3-(4-methanesulfonylphenyl)-1,2,4-oxadiazol-5-yl]piperidin-1-yl}pentanone (BDM41907)), and the docking studies undertaken to investigate possible binding modes. The results revealed two distinct orientations of the three compounds in the binding channel, a direct consequence of the promiscuous nature of the largely lipophilic binding site.
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369
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Automated molecule editing in molecular design. J Comput Aided Mol Des 2013; 27:655-64. [DOI: 10.1007/s10822-013-9676-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Accepted: 08/23/2013] [Indexed: 12/20/2022]
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370
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Ma HY, Zha ZG, Zhang ZL, Meng L, Wang ZY. Electrosynthesis of oxadiazoles from benzoylhydrazines. CHINESE CHEM LETT 2013. [DOI: 10.1016/j.cclet.2013.05.032] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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371
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Stepan AF, Kauffman GW, Keefer CE, Verhoest PR, Edwards M. Evaluating the Differences in Cycloalkyl Ether Metabolism Using the Design Parameter “Lipophilic Metabolism Efficiency” (LipMetE) and a Matched Molecular Pairs Analysis. J Med Chem 2013; 56:6985-90. [DOI: 10.1021/jm4008642] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Antonia F. Stepan
- Pfizer Worldwide Research & Development, 700 Main Street, Cambridge, Massachusetts 02139, United States
| | - Gregory W. Kauffman
- Pfizer Worldwide Research & Development, 700 Main Street, Cambridge, Massachusetts 02139, United States
| | - Christopher E. Keefer
- Pfizer Worldwide Research & Development, Eastern Point Road, Groton, Connecticut 06340, United States
| | - Patrick R. Verhoest
- Pfizer Worldwide Research & Development, 700 Main Street, Cambridge, Massachusetts 02139, United States
| | - Martin Edwards
- Pfizer Worldwide Research & Development, 10770 Science Center Drive, La Jolla, California 92121, United States
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372
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Gao P, Wei Y. Efficient Oxidative Cyclisation of Acid Hydrazides to 2,5-Disubstituted 1,3,4-Oxadiazoles Catalysed by Bu4NI with t-BuOOH as Oxidant. JOURNAL OF CHEMICAL RESEARCH 2013. [DOI: 10.3184/174751913x13736408126236] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Acid hydrazides or araldehyde N-acylhydrazones can be converted in good yields to, respectively, symmetrical or unsymmetrical, 2,5-disubstituted 1,3,4-oxadiazoles at 60 °C by a Bu4NI-catalysed procedure which requires the presence of a base and 2.5 equiv. of t-butyl hydroperoxide.
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Affiliation(s)
- Peng Gao
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China
| | - Yunyang Wei
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China
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373
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Dossetter AG, Griffen EJ, Leach AG. Matched Molecular Pair Analysis in drug discovery. Drug Discov Today 2013; 18:724-31. [DOI: 10.1016/j.drudis.2013.03.003] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Revised: 03/15/2013] [Accepted: 03/25/2013] [Indexed: 01/07/2023]
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374
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Tantak MP, Kumar A, Noel B, Shah K, Kumar D. Synthesis and biological evaluation of 2-arylamino-5- (3'-indolyl)-1,3,4-oxadiazoles as potent cytotoxic agents. ChemMedChem 2013; 8:1468-74. [PMID: 23846853 DOI: 10.1002/cmdc.201300221] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Revised: 06/07/2013] [Indexed: 11/10/2022]
Affiliation(s)
- Mukund P Tantak
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Pilani 333031, Rajasthan, India
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375
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Synthesis and structure–activity relationship of 2-arylamino-4-aryl-pyrimidines as potent PAK1 inhibitors. Bioorg Med Chem Lett 2013; 23:4072-5. [DOI: 10.1016/j.bmcl.2013.05.059] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Revised: 05/13/2013] [Accepted: 05/17/2013] [Indexed: 11/13/2022]
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376
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Abstract
INTRODUCTION The oxadiazoles represent a class of five-membered heterocyclic compounds which are of considerable interest in different areas of medicinal chemistry and drug discovery. Oxadiazoles can exist in different regioisomeric forms and employ in various agents with a broad range of biological activities. This review covers the work reported on various biological activities of oxadiazole derivatives from 2010 to 2012. AREAS COVERED Oxadiazole derivatives attract great attention due to their different kinds of pharmaceutical activities including antiviral, antimicrobial, anticancer, anticonvulsant, antidiabetic and anti-inflammatory activity. This paper provides a general review of oxadiazole derivatives published in international journals and patented between 2010 and 2012. EXPERT OPINION Oxadiazoles have been used frequently in drug-like molecules as bioisosteres for ester and amide functionalities and displayed numerous prominent pharmacological effects. The broad pharmacological profile of oxadiazole derivatives has attracted the attention of many researchers to explore this scaffold to its multiple potential against several activities. Therefore, oxadiazole motif is likely to be present in other therapeutic molecules in the future.
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Affiliation(s)
- Afshin Zarghi
- Shahid Beheshti University of Medical Sciences, School of Pharmacy, Department of Medicinal Chemistry, P.O. Box: 14155-6153, Tehran, Iran.
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377
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Design and synthesis of hydrazine and oxadiazole-containing derivatives of Sorafenib as antitumor agents. Chem Res Chin Univ 2013. [DOI: 10.1007/s40242-013-2490-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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378
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Synthesis and antifungal activity of 3-(1,3,4-oxadiazol-5-yl)-indoles and 3-(1,3,4-oxadiazol-5-yl)methyl-indoles. Eur J Med Chem 2013; 63:22-32. [PMID: 23454531 DOI: 10.1016/j.ejmech.2013.01.038] [Citation(s) in RCA: 104] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2012] [Revised: 01/25/2013] [Accepted: 01/30/2013] [Indexed: 11/24/2022]
Abstract
On the basis of the principle of combination of active structural moieties, a modified and efficient synthetic method for three series of novel indole-based 1,3,4-oxadiazoles is described. Bioassays conducted at Syngenta showed that several of the synthesized compounds exhibit higher antifungal activity than pimprinine, the natural product which inspired this synthesis. Two main structural alterations were found to broaden the spectrum of biological activity in most cases. Compounds 3g, 6c, 6e, 6h, 9d, 9e, 9h and 9m (Fig. 1) were identified as the most active on the biological assays, and will be studied further.
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379
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Plowright AT, Barton P, Bennett S, Birch AM, Birtles S, Buckett LK, Butlin RJ, Davies RDM, Ertan A, Gutierrez PM, Kemmitt PD, Leach AG, Svensson PH, Turnbull AV, Waring MJ. Design and synthesis of a novel series of cyclohexyloxy-pyridyl derivatives as inhibitors of diacylglycerol acyl transferase 1. MEDCHEMCOMM 2013. [DOI: 10.1039/c2md20187a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Design and synthesis of a novel series of cyclohexyloxy-pyridyl inhibitors of diacylglycerol acyl transferase 1.
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380
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Yeung KS, Qiu Z, Yin Z, Trehan A, Fang H, Pearce B, Yang Z, Zadjura L, D’Arienzo CJ, Riccardi K, Shi PY, Spicer TP, Gong YF, Browning MR, Hansel S, Santone K, Barker J, Coulter T, Lin PF, Meanwell NA, Kadow JF. Inhibitors of HIV-1 attachment. Part 8: The effect of C7-heteroaryl substitution on the potency, and in vitro and in vivo profiles of indole-based inhibitors. Bioorg Med Chem Lett 2013. [DOI: 10.1016/j.bmcl.2012.10.117] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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381
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Lai H, Dou D, Aravapalli S, Teramoto T, Lushington GH, Mwania TM, Alliston KR, Eichhorn DM, Padmanabhan R, Groutas WC. Design, synthesis and characterization of novel 1,2-benzisothiazol-3(2H)-one and 1,3,4-oxadiazole hybrid derivatives: potent inhibitors of Dengue and West Nile virus NS2B/NS3 proteases. Bioorg Med Chem 2013; 21:102-13. [PMID: 23211969 PMCID: PMC3563426 DOI: 10.1016/j.bmc.2012.10.058] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Revised: 10/22/2012] [Accepted: 10/31/2012] [Indexed: 12/27/2022]
Abstract
1,2-Benzisothiazol-3(2H)-ones and 1,3,4-oxadiazoles individually have recently attracted considerable interest in drug discovery, including as antibacterial and antifungal agents. In this study, a series of functionalized 1,2-benzisothiazol-3(2H)-one-1,3,4-oxadiazole hybrid derivatives were synthesized and subsequently screened against Dengue and West Nile virus proteases. Ten out of twenty-four compounds showed greater than 50% inhibition against DENV2 and WNV proteases ([I] = 10 μM). The IC(50) values of compound 7n against DENV2 and WNV NS2B/NS3 were found to be 3.75 ± 0.06 and 4.22 ± 0.07 μM, respectively. The kinetics data support a competitive mode of inhibition by compound 7n. Molecular modeling studies were performed to delineate the putative binding mode of this series of compounds. This study reveals that the hybrid series arising from the linking of the two scaffolds provides a suitable platform for conducting a hit-to-lead optimization campaign via iterative structure-activity relationship studies, in vitro screening and X-ray crystallography.
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Affiliation(s)
- Huiguo Lai
- Department of Microbiology and Immunology, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Dengfeng Dou
- Department of Chemistry, Wichita State University, Wichita, Kansas 67260, USA
| | - Sridhar Aravapalli
- Department of Chemistry, Wichita State University, Wichita, Kansas 67260, USA
| | - Tadahisa Teramoto
- Department of Microbiology and Immunology, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Gerald H. Lushington
- Molecular Graphics and Modeling Laboratory, The University of Kansas, Lawrence, KS 66045, USA
| | - Tom M. Mwania
- Department of Chemistry, Wichita State University, Wichita, Kansas 67260, USA
| | - Kevin R. Alliston
- Department of Chemistry, Wichita State University, Wichita, Kansas 67260, USA
| | - David M. Eichhorn
- Department of Chemistry, Wichita State University, Wichita, Kansas 67260, USA
| | - R. Padmanabhan
- Department of Microbiology and Immunology, Georgetown University Medical Center, Washington, DC 20057, USA
| | - William C. Groutas
- Department of Chemistry, Wichita State University, Wichita, Kansas 67260, USA
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382
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Saccone M, Cavallo G, Metrangolo P, Pace A, Pibiri I, Pilati T, Resnati G, Terraneo G. Halogen bond directionality translates tecton geometry into self-assembled architecture geometry. CrystEngComm 2013. [DOI: 10.1039/c3ce40268a] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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383
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Salvanna N, Reddy GC, Rao BR, Das B. Copper-catalyzed direct cross-coupling of 1,3,4-oxadiazoles with N-tosylhydrazones: efficient synthesis of benzylated 1,3,4-oxadiazoles. RSC Adv 2013. [DOI: 10.1039/c3ra42791a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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384
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Shinde VN, Ugarkar BG, Ghorpade SR. A Convenient Synthesis of 5-substituted 2-amino-1,3,4-oxadiazoles from Corresponding Acylthiosemicarbazides Using iodine and Oxone®. JOURNAL OF CHEMICAL RESEARCH 2013. [DOI: 10.3184/174751912x13551638283701] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A convenient methodology has been developed for the synthesis of substituted 2-amino-1,3,4-oxadiazoles from corresponding acylthiosemicarbazides using catalytic amount of iodine/KI in the presence of Oxone® as a bulk oxidant. This offers the advantage of short reaction times and substrate variability which is suitable for the rapid production of analogues required for lead optimisation programmes. The method could also be useful for large-scale synthesis because of the mild reaction conditions and the use commercially inexpensive and safe reagents.
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Affiliation(s)
- Vikas N. Shinde
- AstraZeneca India Pvt. Ltd, Bellary Road, Hebbal, Bangalore 560024, Karnataka, India
| | - Bheemarao G. Ugarkar
- AstraZeneca India Pvt. Ltd, Bellary Road, Hebbal, Bangalore 560024, Karnataka, India
| | - Sandeep R. Ghorpade
- AstraZeneca India Pvt. Ltd, Bellary Road, Hebbal, Bangalore 560024, Karnataka, India
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385
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Scott JS, Birch AM, Brocklehurst KJ, Brown HS, Goldberg K, Groombridge SD, Hudson JA, Leach AG, MacFaul PA, McKerrecher D, Poultney R, Schofield P, Svensson PH. Optimisation of aqueous solubility in a series of G protein coupled receptor 119 (GPR119) agonists. MEDCHEMCOMM 2013. [DOI: 10.1039/c2md20130e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Solubility improvements in a series of GPR119 agonists are achieved through reduction of lipophilicity together with hydrogen bond acceptor modulation.
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386
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Hemming K, Khan MN, O'Gorman PA, Pitard A. 1,2,4-Oxadiazoles from cycloreversions of oxadiazabicyclo[3.2.0]heptenes: 1-azetines as thiocyanate equivalents. Tetrahedron 2013. [DOI: 10.1016/j.tet.2012.12.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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387
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Abstract
Proteases have been successfully targeted for the treatment of several diseases, including hypertension, type 2 diabetes, multiple myeloma, HIV and hepatitis C virus infections. Given the demonstrated pharmacological tractability of this enzyme family and the pressing need for novel drugs to combat antibiotic resistance, proteases have also attracted interest as antibacterial targets--particularly the widely conserved intracellular bacterial degradative proteases, which are often indispensable for normal bacterial growth or virulence. This Review summarizes the roles of the key prokaryotic degradative proteases, with a focus on the initial efforts and associated challenges in developing specific therapeutic modulators of these enzymes as novel classes of antibacterial drugs.
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388
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Namjoshi OA, Wang ZJ, Rallapalli SK, Johnson EM, Johnson YT, Ng H, Ramerstorfer J, Varagic Z, Sieghart W, Majumder S, Roth BL, Rowlett JK, Cook JM. Search for α3β₂/₃γ2 subtype selective ligands that are stable on human liver microsomes. Bioorg Med Chem 2012; 21:93-101. [PMID: 23218469 DOI: 10.1016/j.bmc.2012.10.057] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2012] [Revised: 10/22/2012] [Accepted: 10/31/2012] [Indexed: 11/27/2022]
Abstract
Selective modulation of specific benzodiazepine receptor (BzR) gamma amino butyric acid-A (GABA(A)) receptor ion channels has been identified as an important method for separating out the variety of pharmacological effects elicited by BzR-related drugs. Importantly, it has been demonstrated that both α2β(2/3)γ2 (α2BzR) and α3BzR (and/or α2/α3) BzR subtype selective ligands exhibit anxiolytic effects with little or no sedation. Previously we have identified several such ligands; however, three of our parent ligands exhibited significant metabolic liability in rodents in the form of a labile ester group. Here eight analogs are reported which were designed to circumvent this liability by utilizing a rational replacement of the ester moiety based on medicinal chemistry precedents. In a metabolic stability study using human liver microsomes, four compounds were found to undergo slower metabolic transformation, as compared to their corresponding ester analogs. These compounds were also evaluated in in vitro efficacy assays. Additionally, bioisostere 11 was evaluated in a rodent model of anxiety. It exhibited anxiolytic activity at doses of 10 and 100mg/kg and was devoid of sedative properties.
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Affiliation(s)
- Ojas A Namjoshi
- Department of Chemistry, University of Wisconsin-Milwaukee, PO Box 413, Milwaukee, WI 53211, USA
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389
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Crawford JJ, Kenny PW, Bowyer J, Cook CR, Finlayson JE, Heyes C, Highton AJ, Hudson JA, Jestel A, Krapp S, Martin S, MacFaul PA, McDermott BP, McGuire TM, Morley AD, Morris JJ, Page KM, Ribeiro LR, Sawney H, Steinbacher S, Smith C, Dossetter AG. Pharmacokinetic Benefits of 3,4-Dimethoxy Substitution of a Phenyl Ring and Design of Isosteres Yielding Orally Available Cathepsin K Inhibitors. J Med Chem 2012; 55:8827-37. [DOI: 10.1021/jm301119s] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- James J. Crawford
- AstraZeneca R&D, Mereside, Alderley Park, Macclesfield, Cheshire SK10 4TG, United Kingdom
| | - Peter W. Kenny
- AstraZeneca R&D, Mereside, Alderley Park, Macclesfield, Cheshire SK10 4TG, United Kingdom
| | - Jonathan Bowyer
- AstraZeneca R&D, Mereside, Alderley Park, Macclesfield, Cheshire SK10 4TG, United Kingdom
| | - Calum R. Cook
- AstraZeneca R&D, Mereside, Alderley Park, Macclesfield, Cheshire SK10 4TG, United Kingdom
| | - Jonathan E. Finlayson
- AstraZeneca R&D, Mereside, Alderley Park, Macclesfield, Cheshire SK10 4TG, United Kingdom
| | - Christine Heyes
- AstraZeneca R&D, Mereside, Alderley Park, Macclesfield, Cheshire SK10 4TG, United Kingdom
| | - Adrian J. Highton
- AstraZeneca R&D, Mereside, Alderley Park, Macclesfield, Cheshire SK10 4TG, United Kingdom
| | - Julian A. Hudson
- AstraZeneca R&D, Mereside, Alderley Park, Macclesfield, Cheshire SK10 4TG, United Kingdom
| | - Anja Jestel
- Proteros Biostructures, Am Klopferspitz 19, D-82152 Martinsried,
Germany
| | - Stephan Krapp
- Proteros Biostructures, Am Klopferspitz 19, D-82152 Martinsried,
Germany
| | - Scott Martin
- AstraZeneca R&D, Mereside, Alderley Park, Macclesfield, Cheshire SK10 4TG, United Kingdom
| | - Philip A. MacFaul
- AstraZeneca R&D, Mereside, Alderley Park, Macclesfield, Cheshire SK10 4TG, United Kingdom
| | - Benjamin P. McDermott
- AstraZeneca R&D, Mereside, Alderley Park, Macclesfield, Cheshire SK10 4TG, United Kingdom
| | - Thomas M. McGuire
- AstraZeneca R&D, Mereside, Alderley Park, Macclesfield, Cheshire SK10 4TG, United Kingdom
| | - Andrew D. Morley
- AstraZeneca R&D, Mereside, Alderley Park, Macclesfield, Cheshire SK10 4TG, United Kingdom
| | - Jeffrey J. Morris
- AstraZeneca R&D, Mereside, Alderley Park, Macclesfield, Cheshire SK10 4TG, United Kingdom
| | - Ken M. Page
- AstraZeneca R&D, Mereside, Alderley Park, Macclesfield, Cheshire SK10 4TG, United Kingdom
| | - Lyn Rosenbrier Ribeiro
- AstraZeneca R&D, Mereside, Alderley Park, Macclesfield, Cheshire SK10 4TG, United Kingdom
| | - Helen Sawney
- AstraZeneca R&D, Mereside, Alderley Park, Macclesfield, Cheshire SK10 4TG, United Kingdom
| | - Stefan Steinbacher
- Proteros Biostructures, Am Klopferspitz 19, D-82152 Martinsried,
Germany
| | - Caroline Smith
- AstraZeneca R&D, Mereside, Alderley Park, Macclesfield, Cheshire SK10 4TG, United Kingdom
| | - Alexander G. Dossetter
- AstraZeneca R&D, Mereside, Alderley Park, Macclesfield, Cheshire SK10 4TG, United Kingdom
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390
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Kumar D, Arun V, Maruthi Kumar N, Acosta G, Noel B, Shah K. A facile synthesis of novel bis-(indolyl)-1,3,4-oxadiazoles as potent cytotoxic agents. ChemMedChem 2012; 7:1915-20. [PMID: 22997171 DOI: 10.1002/cmdc.201200363] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2012] [Indexed: 11/06/2022]
Abstract
A recipe for potency: A novel series of bis(indolyl)-1,3,4-oxadiazoles was prepared from the corresponding hydrazide-hydrazones via iodobenzene diacetate-promoted oxidative cyclization. Evaluation against a panel of human cancer cell lines revealed that some derivatives possess potent cytotoxicity with tunable selectivity for different cancer types.
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Affiliation(s)
- Dalip Kumar
- Department of Chemistry, Birla Institute of Technology and Science, Pilani-333031, Rajasthan (India).
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391
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dos Santos Filho JM, Moreira DRM, de Simone CA, Ferreira RS, McKerrow JH, Meira CS, Guimarães ET, Soares MBP. Optimization of anti-Trypanosoma cruzi oxadiazoles leads to identification of compounds with efficacy in infected mice. Bioorg Med Chem 2012; 20:6423-33. [PMID: 23006639 DOI: 10.1016/j.bmc.2012.08.047] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2012] [Revised: 08/16/2012] [Accepted: 08/23/2012] [Indexed: 10/27/2022]
Abstract
We recently showed that oxadiazoles have anti-Trypanosoma cruzi activity at micromolar concentrations. These compounds are easy to synthesize and show a number of clear and interpretable structure-activity relationships (SAR), features that make them attractive to pursue potency enhancement. We present here the structural design, synthesis, and anti-T. cruzi evaluation of new oxadiazoles denoted 5a-h and 6a-h. The design of these compounds was based on a previous model of computational docking of oxadiazoles on the T. cruzi protease cruzain. We tested the ability of these compounds to inhibit catalytic activity of cruzain, but we found no correlation between the enzyme inhibition and the antiparasitic activity of the compounds. However, we found reliable SAR data when we tested these compounds against the whole parasite. While none of these oxadiazoles showed toxicity for mammalian cells, oxadiazoles 6c (fluorine), 6d (chlorine), and 6e (bromine) reduced epimastigote proliferation and were cidal for trypomastigotes of T. cruzi Y strain. Oxadiazoles 6c and 6d have IC(50) of 9.5 ± 2.8 and 3.5 ± 1.8 μM for trypomastigotes, while Benznidazole, which is the currently used drug for Chagas disease treatment, showed an IC(50) of 11.3 ± 2.8 μM. Compounds 6c and 6d impair trypomastigote development and invasion in macrophages, and also induce ultrastructural alterations in trypomastigotes. Finally, compound 6d given orally at 50mg/kg substantially reduces the parasitemia in T. cruzi-infected BALB/c mice. Our drug design resulted in potency enhancement of oxadiazoles as anti-Chagas disease agents, and culminated with the identification of oxadiazole 6d, a trypanosomicidal compound in an animal model of infection.
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Affiliation(s)
- José Maurício dos Santos Filho
- Departamento de Engenharia Química, Centro de Tecnologia e Geociências, Universidade Federal de Pernambuco, CEP 50740-521, Recife, PE, Brazil.
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392
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de Oliveira CS, Lira BF, Barbosa-Filho JM, Lorenzo JGF, de Athayde-Filho PF. Synthetic approaches and pharmacological activity of 1,3,4-oxadiazoles: a review of the literature from 2000-2012. Molecules 2012; 17:10192-231. [PMID: 22926303 PMCID: PMC6268307 DOI: 10.3390/molecules170910192] [Citation(s) in RCA: 164] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2012] [Revised: 08/15/2012] [Accepted: 08/17/2012] [Indexed: 12/14/2022] Open
Abstract
This review provides readers with an overview of the main synthetic methodologies for 1,3,4-oxadiazole derivatives, and of their broad spectrum of pharmacological activities as reported over the past twelve years.
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Affiliation(s)
| | - Bruno Freitas Lira
- Department of Chemistry, Federal University of Paraíba, 58051-900 João Pessoa-PB, Brazil; (C.S.O.); (B.F.L.)
| | - José Maria Barbosa-Filho
- Laboratory of Pharmaceutical Technology, Federal University of Paraíba, 58051-900 João Pessoa-PB, Brazil; (J.M.B.-F.); (J.G.F.L.)
| | - Jorge Gonçalo Fernandez Lorenzo
- Laboratory of Pharmaceutical Technology, Federal University of Paraíba, 58051-900 João Pessoa-PB, Brazil; (J.M.B.-F.); (J.G.F.L.)
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393
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Synthesis and Crystal Structure of Benzyl [(1S)-1-(5-amino-1,3,4-oxadiazol-2-yl)-2-phenylethyl]carbamate. CRYSTALS 2012. [DOI: 10.3390/cryst2031201] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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394
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Reichstein A, Vortherms S, Bannwitz S, Tentrop J, Prinz H, Müller K. Synthesis and Structure–Activity Relationships of Lapacho Analogues. 1. Suppression of Human Keratinocyte Hyperproliferation by 2-Substituted Naphtho[2,3-b]furan-4,9-diones, Activation by Enzymatic One- and Two-Electron Reduction, and Intracellular Generation of Superoxide. J Med Chem 2012; 55:7273-84. [DOI: 10.1021/jm3009597] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Alexandra Reichstein
- Institute of Pharmaceutical and Medicinal
Chemistry,
Westphalian Wilhelms-University, Hittorfstraße 58−62,
D-48149 Münster, Germany
| | - Silke Vortherms
- Institute of Pharmaceutical and Medicinal
Chemistry,
Westphalian Wilhelms-University, Hittorfstraße 58−62,
D-48149 Münster, Germany
| | - Sven Bannwitz
- Institute of Pharmaceutical and Medicinal
Chemistry,
Westphalian Wilhelms-University, Hittorfstraße 58−62,
D-48149 Münster, Germany
| | - Jan Tentrop
- Institute of Pharmaceutical and Medicinal
Chemistry,
Westphalian Wilhelms-University, Hittorfstraße 58−62,
D-48149 Münster, Germany
| | - Helge Prinz
- Institute of Pharmaceutical and Medicinal
Chemistry,
Westphalian Wilhelms-University, Hittorfstraße 58−62,
D-48149 Münster, Germany
| | - Klaus Müller
- Institute of Pharmaceutical and Medicinal
Chemistry,
Westphalian Wilhelms-University, Hittorfstraße 58−62,
D-48149 Münster, Germany
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395
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Lo Monte F, Kramer T, Gu J, Brodrecht M, Pilakowski J, Fuertes A, Dominguez JM, Plotkin B, Eldar-Finkelman H, Schmidt B. Structure-based optimization of oxadiazole-based GSK-3 inhibitors. Eur J Med Chem 2012; 61:26-40. [PMID: 22749643 DOI: 10.1016/j.ejmech.2012.06.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2012] [Revised: 05/16/2012] [Accepted: 06/03/2012] [Indexed: 10/28/2022]
Abstract
Inhibition of glycogen synthase kinase-3 (GSK-3) induces neuroprotective effects, e.g. decreases β-amyloid production and reduces tau hyperphosphorylation, which are both associated with Alzheimer's disease (AD). The two isoforms of GSK-3 in mammalians are GSK-3α and β, which share 98% homology in their catalytic domains. We investigated GSK-3 inhibitors based on 2 different scaffolds in order to elucidate the demands of the ATP-binding pocket [1]. Particularly, the oxadiazole scaffold provided potent and selective GSK-3 inhibitors. For example, the most potent inhibitor of the present series, the acetamide 26d, is characterized by an IC50 of 2 nM for GSK-3α and 17 nM for GSK-3β. In addition, the benzodioxane 8g showed up to 27-fold selectivity for GSK-3α over GSK-3β, with an IC50 of 35 nM for GSK-3α. Two GSK-3 inhibitors were further profiled for efficacy and toxicity in the wild-type (wt) zebrafish embryo assay to evaluate simultaneously permeability and safety.
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Affiliation(s)
- Fabio Lo Monte
- Clemens Schöpf - Institute of Organic Chemistry and Biochemistry, Technische Universität Darmstadt, Petersenstrasse 22, 64287 Darmstadt, Germany.
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396
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Affiliation(s)
- David J St Jean
- Department of Therapeutic Discovery, Amgen, Inc, Thousand Oaks, CA 91320, USA
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397
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Asano M, Nakamura T, Sekiguchi Y, Mizuno Y, Yamaguchi T, Tamaki K, Shimozato T, Doi-Komuro H, Kagari T, Tomisato W, Inoue R, Yuita H, Oguchi-Oshima K, Kaneko R, Nara F, Kawase Y, Masubuchi N, Nakayama S, Koga T, Namba E, Nasu H, Nishi T. Synthesis and SAR of 1,3-thiazolyl thiophene and pyridine derivatives as potent, orally active and S1P₃-sparing S1P₁ agonists. Bioorg Med Chem Lett 2012; 22:3083-8. [PMID: 22487179 DOI: 10.1016/j.bmcl.2012.03.067] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2012] [Revised: 03/10/2012] [Accepted: 03/16/2012] [Indexed: 10/28/2022]
Abstract
We have previously disclosed 1,2,4-oxadiazole derivative 3 as a potent S1P(3)-sparing S1P(1) agonist. Although compound 3 exhibits potent and manageable immunosuppressive efficacy in various in vivo models, recent studies have revealed that its 1,2,4-oxadiazole ring is subjected to enterobacterial decomposition. As provisions for unpredictable issues, a series of alternative compounds were synthesized on the basis of compound 3. Extensive SAR studies led to the finding of 1,3-thiazole 24c with the EC(50) value of 3.4 nM for human S1P(1), and over 5800-fold selectivity against S1P(3). In rat on host versus graft reaction (HvGR), the ID(50) value of 24c was determined at 0.07 mg/kg. The pharmacokinetics in rat and monkey is also reported. Compared to compound 3, 24c showed excellent stability against enterobacteria.
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Affiliation(s)
- Masayoshi Asano
- Lead Discovery & Optimization Research Laboratories I, Daiichi Sankyo Co., Ltd, 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan
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398
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Affiliation(s)
- Klaus Müller
- Pharmaceutical Research, F. Hoffmann-La Roche AG, CH-4070 Basel, Switzerland
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399
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Ritchie TJ, Macdonald SJF, Peace S, Pickett SD, Luscombe CN. The developability of heteroaromatic and heteroaliphatic rings – do some have a better pedigree as potential drug molecules than others? MEDCHEMCOMM 2012. [DOI: 10.1039/c2md20111a] [Citation(s) in RCA: 131] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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400
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Goldberg K, Groombridge S, Hudson J, Leach AG, MacFaul PA, Pickup A, Poultney R, Scott JS, Svensson PH, Sweeney J. Oxadiazole isomers: all bioisosteres are not created equal. MEDCHEMCOMM 2012. [DOI: 10.1039/c2md20054f] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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