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Shuvalov VY, Rozhkova YS, Plekhanova IV, Kostyuchenko AS, Shklyaev YV, Fisyuk AS. Synthesis of 3-Amino-6,7-Dihydroferroceno[a]Quinolizin-4-One Derivatives via the Reaction of 3,4-Dihydroferroceno[c]Pyridines with Azlactones. Chem Heterocycl Compd (N Y) 2022. [DOI: 10.1007/s10593-022-03050-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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2
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Shuvalov VY, Samsonenko AL, Rozhkova YS, Morozov VV, Shklyaev YV, Fisyuk AS. Synthesis of 3‐Aminopyrido[2,1‐
a
]isoquinolin‐4‐one Derivatives
via
Condensation of Azlactones with 1‐Alkyl‐3,4‐dihydroisoquinolines. ChemistrySelect 2021. [DOI: 10.1002/slct.202103028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Vladislav Yu. Shuvalov
- Laboratory of New Organic Materials Omsk State Technical University 11 Mira Ave. 644050 Omsk Russian Federation
| | - Anna L. Samsonenko
- Department Department of Organic Chemistry Omsk F. M. Dostoevsky State University 55a Mira Ave. 644077 Omsk Russian Federation
| | - Yuliya S. Rozhkova
- Institute of Technical Chemistry UB RAS 3 Akademika Korolyeva St. 614013 Perm Russian Federation
| | - Vyacheslav V. Morozov
- Institute of Technical Chemistry UB RAS 3 Akademika Korolyeva St. 614013 Perm Russian Federation
| | - Yurii V. Shklyaev
- Institute of Technical Chemistry UB RAS 3 Akademika Korolyeva St. 614013 Perm Russian Federation
| | - Alexander S. Fisyuk
- Department Department of Organic Chemistry Omsk F. M. Dostoevsky State University 55a Mira Ave. 644077 Omsk Russian Federation
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Shuvalov VY, Chernenko SА, Shatsauskas AL, Samsonenko AL, Dmitriev MV, Fisyuk AS. Novel Approach to the Synthesis of 3-amino-4-arylpyridin-2(1 H)-one Derivatives. Chem Heterocycl Compd (N Y) 2021; 57:764-771. [PMID: 34511628 PMCID: PMC8421715 DOI: 10.1007/s10593-021-02980-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 08/05/2021] [Indexed: 12/02/2022]
Abstract
The reaction of 4-arylidene-2-phenyloxazol-5(4H)-ones with enamines of ethyl acetoacetate gave 4-aryl-2-methyl-6-oxo-5-[(phenylcarbonyl)amino]-1,4,5,6-tetrahydropyridine-3-carboxylic acid esters, which, when heated with phosphorus oxychloride, were converted into esters of 7-aryl-5-methyl-2-phenyloxazolo[5,4-b]pyridine-6-carboxylic acids. Alkaline hydrolysis of these compounds gave 4-aryl-2-methyl-6-oxo-5-[(phenylcarbonyl)amino]-1,6-dihydropyridine-3-carboxylic acid esters.
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Affiliation(s)
| | | | | | | | | | - Alexander S Fisyuk
- Omsk State Technical University, 11 Mira Ave, Omsk, 644050 Russia.,Dostoevsky Omsk State University, 55a Mira Ave, Omsk, 644077 Russia
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Meyer DN, Cortés González MA, Jiang X, Johansson-Holm L, Pourghasemi Lati M, Elgland M, Nordeman P, Antoni G, Szabó KJ. Base-catalysed 18F-labelling of trifluoromethyl ketones. Application to the synthesis of 18F-labelled neutrophil elastase inhibitors. Chem Commun (Camb) 2021; 57:8476-8479. [PMID: 34346419 DOI: 10.1039/d1cc03624f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A new method for the fluorine-18 labelling of trifluoromethyl ketones has been developed. This method is based on the conversion of a-COCF3 functional group to a difluoro enol silyl ether followed by halogenation and fluorine-18 labelling. The utility of this new method was demonstrated by the synthesis of fluorine-18 labelled neutrophil elastase inhibitors, which are potentially useful for detection of inflammatory disorders.
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Affiliation(s)
- Denise N Meyer
- Department of Organic Chemistry, Stockholm University, SE-106 91, Sweden.
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Jiang X, Meyer D, Baran D, Cortés González MA, Szabó KJ. Trifluoromethylthiolation, Trifluoromethylation, and Arylation Reactions of Difluoro Enol Silyl Ethers. J Org Chem 2020; 85:8311-8319. [PMID: 32441100 PMCID: PMC7339110 DOI: 10.1021/acs.joc.0c01030] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
![]()
This study reports a new application
area of difluoro enol silyl
ethers, which can be easily obtained from trifluoromethyl ketones.
The main focus has been directed to the electrophilic fluoroalkylation
and arylation methods. The trifluoromethylthiolation of difluoro enol
silyl ethers can be used for the construction of a novel trifluoromethylthio-α,α-difluoroketone
(−COCF2SCF3) functionality. The −CF2SCF3 moiety has interesting properties due to the
electron-withdrawing, albeit lipophilic, character of the SCF3 group, which can be combined with the high electrophilicity
of the difluoroketone motif. The methodology could also be extended
to difluoro homologation of the trifluoromethyl ketones using the
Togni reagent. In addition, we presented a method for transition-metal-free
arylation of difluoro enol silyl ethers based on hypervalent iodines.
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Affiliation(s)
- Xingguo Jiang
- Department of Organic Chemistry, Stockholm University, Stockholm SE-106 91, Sweden
| | - Denise Meyer
- Department of Organic Chemistry, Stockholm University, Stockholm SE-106 91, Sweden
| | - Dominik Baran
- Department of Organic Chemistry, Stockholm University, Stockholm SE-106 91, Sweden
| | | | - Kálmán J Szabó
- Department of Organic Chemistry, Stockholm University, Stockholm SE-106 91, Sweden
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6
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Pati TK, Debnath S, Kundu M, Khamrai U, Maiti DK. 3-Amino-1-methyl-1H-pyridin-2-one-Directed PdII Catalysis: C(sp3)–H Activated Diverse Arylation Reaction. Org Lett 2018; 20:4062-4066. [DOI: 10.1021/acs.orglett.8b01618] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Tanmay K. Pati
- Department of Chemistry, University of Calcutta, 92 APC Road, Kolkata 700009, India
- TCG Lifesciences Private Limited, Sector V, Salt Lake City, Kolkata 700091, India
| | - Sudipto Debnath
- Department of Chemistry, University of Calcutta, 92 APC Road, Kolkata 700009, India
| | - Mrinalkanti Kundu
- TCG Lifesciences Private Limited, Sector V, Salt Lake City, Kolkata 700091, India
| | - Uttam Khamrai
- TCG Lifesciences Private Limited, Sector V, Salt Lake City, Kolkata 700091, India
| | - Dilip K. Maiti
- Department of Chemistry, University of Calcutta, 92 APC Road, Kolkata 700009, India
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7
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Affiliation(s)
- Wendy A. Loughlin
- School of Science, Nathan Campus, Griffith University, Brisbane, QLD 4111, Australia, and Division of Chemistry and Structural Biology, Institute for Molecular Bioscience, University of Queensland, Brisbane, QLD 4072, Australia This is a Chemical Reviews Perennial Review. The root paper of this title was published in Chem. Rev. 2004, 104 (12), 6085−6117, DOI: 10.1021/cr040648k; Published (Web) Nov. 4, 2004. Updates to the text appear in red type
| | - Joel D. A. Tyndall
- School of Science, Nathan Campus, Griffith University, Brisbane, QLD 4111, Australia, and Division of Chemistry and Structural Biology, Institute for Molecular Bioscience, University of Queensland, Brisbane, QLD 4072, Australia This is a Chemical Reviews Perennial Review. The root paper of this title was published in Chem. Rev. 2004, 104 (12), 6085−6117, DOI: 10.1021/cr040648k; Published (Web) Nov. 4, 2004. Updates to the text appear in red type
| | - Matthew P. Glenn
- School of Science, Nathan Campus, Griffith University, Brisbane, QLD 4111, Australia, and Division of Chemistry and Structural Biology, Institute for Molecular Bioscience, University of Queensland, Brisbane, QLD 4072, Australia This is a Chemical Reviews Perennial Review. The root paper of this title was published in Chem. Rev. 2004, 104 (12), 6085−6117, DOI: 10.1021/cr040648k; Published (Web) Nov. 4, 2004. Updates to the text appear in red type
| | - Timothy A. Hill
- School of Science, Nathan Campus, Griffith University, Brisbane, QLD 4111, Australia, and Division of Chemistry and Structural Biology, Institute for Molecular Bioscience, University of Queensland, Brisbane, QLD 4072, Australia This is a Chemical Reviews Perennial Review. The root paper of this title was published in Chem. Rev. 2004, 104 (12), 6085−6117, DOI: 10.1021/cr040648k; Published (Web) Nov. 4, 2004. Updates to the text appear in red type
| | - David P. Fairlie
- School of Science, Nathan Campus, Griffith University, Brisbane, QLD 4111, Australia, and Division of Chemistry and Structural Biology, Institute for Molecular Bioscience, University of Queensland, Brisbane, QLD 4072, Australia This is a Chemical Reviews Perennial Review. The root paper of this title was published in Chem. Rev. 2004, 104 (12), 6085−6117, DOI: 10.1021/cr040648k; Published (Web) Nov. 4, 2004. Updates to the text appear in red type
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8
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Tan L, Batista J, Bajorath J. Rationalization of the Performance and Target Dependence of Similarity Searching Incorporating Protein−Ligand Interaction Information. J Chem Inf Model 2010; 50:1042-52. [DOI: 10.1021/ci1001197] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lu Tan
- Department of Life Science Informatics, B-IT, LIMES Program Unit Chemical Biology and Medicinal Chemistry, Rheinische Friedrich-Wilhelms-Universität, Dahlmannstrasse 2, D-53113 Bonn, Germany and In-Silico Center, JADO Technologies GmbH, Tatzberg 47-51, D-01307 Dresden, Germany
| | - José Batista
- Department of Life Science Informatics, B-IT, LIMES Program Unit Chemical Biology and Medicinal Chemistry, Rheinische Friedrich-Wilhelms-Universität, Dahlmannstrasse 2, D-53113 Bonn, Germany and In-Silico Center, JADO Technologies GmbH, Tatzberg 47-51, D-01307 Dresden, Germany
| | - Jürgen Bajorath
- Department of Life Science Informatics, B-IT, LIMES Program Unit Chemical Biology and Medicinal Chemistry, Rheinische Friedrich-Wilhelms-Universität, Dahlmannstrasse 2, D-53113 Bonn, Germany and In-Silico Center, JADO Technologies GmbH, Tatzberg 47-51, D-01307 Dresden, Germany
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9
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Karis ND, Loughlin WA, Jenkins ID, Healy PC. tert-Butyl 2-(3-acetylamino-2-oxo-1,2-dihydro-1-pyridyl)acetate. Acta Crystallogr Sect E Struct Rep Online 2008; 64:o2492-3. [PMID: 21581454 PMCID: PMC2959903 DOI: 10.1107/s1600536808039810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2008] [Accepted: 11/25/2008] [Indexed: 11/30/2022]
Abstract
The title compound, C13H18N2O4, crystallizes as discrete molecules associated as N—H⋯O hydrogen-bonded dimers disposed about a crystallographic inversion centre. The structure is the first solid-state structure for a 3-acetylpyridone without C-4 to C-6 substituents. The amide subsituent at C-3 is coplanar with the pyridone ring, while the tert-butyl ester group is orthogonal to the pyridine ring. The amide and ester carbonyl O atoms are not involved in strong hydrogen bonding with only a number of intramolecular and intermolecular C—H⋯O interactions apparent in the structure.
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Hussein AM, Harb AA, Mousa IA. β-Oxoanilides in heterocyclic synthesis: An expeditious synthesis of new polyfunctionally substituted pyridine and pyrazole derivatives. J Heterocycl Chem 2008. [DOI: 10.1002/jhet.5570450641] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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11
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Sun A, Yoon JJ, Yin Y, Prussia A, Yang Y, Min J, Plemper RK, Snyder JP. Potent non-nucleoside inhibitors of the measles virus RNA-dependent RNA polymerase complex. J Med Chem 2008; 51:3731-41. [PMID: 18529043 PMCID: PMC2587337 DOI: 10.1021/jm701239a] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Measles virus (MV) is one of the most infectious pathogens known. In spite of the existence of a vaccine, approximately 350000 deaths/year result from MV or associated complications. Antimeasles compounds could conceivably diminish these statistics and provide a therapy that complements vaccine treatment. We recently described a high-throughput screening hit compound 1 (16677) against MV-infected cells with the capacity to eliminate viral reproduction at 250 nM by inhibiting the action of the virus's RNA-dependent RNA polymerase complex (RdRp). The compound, 1-methyl-3-(trifluoromethyl)- N-[4-sulfonylphenyl]-1 H-pyrazole-5-carboxamide, 1 carries a critical CF 3 moiety on the 1,2-pyrazole ring. Elaborating on the preliminary structure-activity (SAR) study, the present work presents the synthesis and SAR of a much broader range of low nanomolar nonpeptidic MV inhibitors and speculates on the role of the CF 3 functionality.
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Affiliation(s)
- Aiming Sun
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, USA.
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12
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Karis ND, Loughlin WA, Jenkins ID. A facile and efficient method for the synthesis of novel pyridone analogues by aminolysis of an ester under solvent-free conditions. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.09.068] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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13
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Rode H, Koerbe S, Besch A, Methling K, Loose J, Otto HH. Synthesis and in vitro evaluation of pseudosaccharinamine derivatives as potential elastase inhibitors. Bioorg Med Chem 2006; 14:2789-98. [PMID: 16377194 DOI: 10.1016/j.bmc.2005.11.057] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2005] [Revised: 11/12/2005] [Accepted: 11/30/2005] [Indexed: 11/25/2022]
Abstract
Pseudosaccharinamine derivatives were evaluated for elastase inhibitory activity. Ester derivatives of pseudosaccharinamine displayed reversible and high inhibition of human leukocyte elastase (HLE) as compared to porcine pancreatic elastase (PPE). Cyanomethyl (2S,3S)-2-(1,1-dioxobenzo[d]isothiazol-3-ylamino)-3-methylpentanoate was found to inhibit HLE at Ki=0.8 microM.
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Affiliation(s)
- Haridas Rode
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Ernst-Moritz-Arndt-University, Friedrich-Ludwig-Jahn-Str. 17, D-17489 Greifswald, Germany
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14
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Affiliation(s)
- Wendy A Loughlin
- School of Science, Nathan Campus, Griffith University, Brisbane, QLD 4111, Australia.
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15
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Abstract
We previously showed that a metalloprotease and a serine protease mediate shedding of the TNF-R75 (75-kDa tumor necrosis factor receptor) in neutrophils. Here we show that elastase is the TNF-R75 solubilizing serine protease. Release of the TNF-R75 by resting cells was almost totally inhibited by the serine protease inhibitor diisopropylfluorophosphate (DFP), by two synthetic, chemically unrelated, elastase-specific inhibitors and by alpha1-protease inhibitor. Release after TNF or FMLP (N-formyl-L-methionyl-L-leucyl-L-phenylalanine) stimulation was blocked by DFP and a metalloprotease inhibitor used in combination. Supernatants from resting neutrophils contained a 28-kDa fragment of the receptor, compatible with that generated by elastase, whose appearance was inhibited by DFP. Upon FMLP stimulation, the release of 28-kDa and 40-kDa fragments was observed, which was inhibited by DFP and a metalloprotease inhibitor, respectively. We conclude that elastase is the TNF-R75 sheddase of resting neutrophils and that it contributes to shedding of this receptor in stimulated cells.
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Affiliation(s)
- Chiara Gasparini
- Department of Physiology and Pathology, University of Trieste, Via A. Fleming 22, Trieste, Italy
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16
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Huang W, Naughton MA, Yang H, Su T, Dam S, Wong PW, Arfsten A, Edwards S, Sinha U, Hollenbach S, Scarborough RM, Zhu BY. Design, synthesis, and structure-activity relationships of unsubstituted piperazinone-based transition state factor Xa inhibitors. Bioorg Med Chem Lett 2003; 13:723-8. [PMID: 12639567 DOI: 10.1016/s0960-894x(02)01037-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A series of novel transition state factor Xa inhibitors containing a variety of lactam ring systems as central templates was synthesized in an expedient manner and allowed for a great deal of structural variability. Among them, the piperazinone-based inhibitors were found to be not only active against factor Xa but also selective over thrombin. Optimization of the P4 moiety yielded several potent compounds with IC(50) below 1 nM against factor Xa.
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Affiliation(s)
- Wenrong Huang
- Department of Medicinal Chemistry, Millennium Pharmaceuticals Inc., 256 East Grand Ave., South San Francisco, CA 94080, USA
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17
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Zhang X, Schmitt AC, Decicco CP. Design and synthesis of 6-amino-5-oxo-1,2,3,5-tetrahydro-3-indolizinecarboxylic acids as β-sheet peptidomimetics. Tetrahedron Lett 2002. [DOI: 10.1016/s0040-4039(02)02447-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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18
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Odagaki Y, Ohmoto K, Matsuoka S, Hamanaka N, Nakai H, Toda M, Katsuya Y. The crystal structure of the complex of non-peptidic inhibitor of human neutrophil elastase ONO-6818 and porcine pancreatic elastase. Bioorg Med Chem 2001; 9:647-51. [PMID: 11310599 DOI: 10.1016/s0968-0896(00)00277-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The crystal structure of a new inhibitor of human neutrophil elastase (HNE), N-[2-[5-(tert-butyl)-1,3,4-oxadiazol-2-yl]-(IRS)-1-(methylethyl)-2-oxoethyl]-2-(5-amino-6-oxo-2-phenyl-6H-pyrimidin-1-ly)acetamide (ONO-6818, 1) complexed to porcine pancreatic elastase (PPE) has been determined at 1.86 A resolution. Analytical results provided evidence of a 1:1 complex in which the electrophilic ketone of 1 covalently bound to O gamma of Ser195 at the active site of PPE. The role of the unique electron-withdrawing ketone of 1 has been elucidated.
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Affiliation(s)
- Y Odagaki
- Minase Research Institute, Ono Pharmaceutical Co., Ltd. Mishima-Gun, Osaka, Japan.
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Akahoshi F, Ashimori A, Yoshimura T, Imada T, Nakajima M, Mitsutomi N, Kuwahara S, Ohtsuka T, Fukaya C, Miyazaki M, Nakamura N. Non-peptidic inhibitors of human chymase. Synthesis, structure-activity relationships, and pharmacokinetic profiles of a series of 5-amino-6-oxo-1,6-dihydropyrimidine-containing trifluoromethyl ketones. Bioorg Med Chem 2001; 9:301-15. [PMID: 11249123 DOI: 10.1016/s0968-0896(00)00244-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Chymase possesses a wide variety of actions, including promotion of angiotensin II production and histamine release from mast cells. However, due to a lack of effective inhibitors featuring both high inhibitory activity and high metabolic stability, the pathophysiological role of chymase has not been fully elucidated. We designed non-peptidic inhibitors based on the predicted binding mode of the peptidic chymase inhibitor Val-Pro-Phe-CF3 and demonstrated that the Val-Pro unit is replaceable with a (5-amino-6-oxo-2-phenyl-1,6-dihydro-1-pyrimidinyl)acetyl moiety. Structure-activity relationship studies revealed that phenyl substitution at the 2-position of the pyrimidinone ring is indispensable for high activity. The most potent compound 1h (Ki = 0.0506 microM) is superior in potency to the parent peptidic inhibitor Val-Pro-Phe-CF3 and has good selectivity for chymase over other proteases. The related analogue 1e was orally absorbed and maintained high plasma levels for at least 2h. These results suggest that the derivatives reported here could be developed as agents for treatment of chymase-induced disease.
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Affiliation(s)
- F Akahoshi
- Drug Discovery Laboratories, Welfide Corporation, Osaka, Japan.
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20
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Affiliation(s)
- T Anger
- The Wolfson Institute for Biomedical Research, Cruciform Building, Gower Street, London WC1E 6AE, United Kingdom
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Abstract
Human leukocyte elastase (HLE) is a serine protease that contributes to tissue destruction in various disease states-for example, in emphysema. FR901277 is a natural product isolated from the culture filtrate of Streptomyces resistomicificus and is a potent inhibitor of both HLE and porcine pancreatic elastase (PPE). FR901277 consists of four normal amino acids and three unusual amino acids, and is a unique bicyclic peptide compound. The crystal structure of PPE complexed with FR901277 has been determined at 1.6 A resolution. The Ogamma atom of Ser-195 in PPE did not form a covalent bond with FR901277, but formed a hydrogen bond with the Nvarepsilon atom of His-57. On the other hand, the portion from L-Orn(1) through dehydroxyThr(3) in FR901277 formed an antiparallel beta-sheet structure with the backbone of the active site in PPE. The S4 through S2' binding subsites in PPE were all occupied by the hydrophobic side chains of the inhibitor molecule. Especially, the ethylidene moiety of FR901277 occupied the S1 specific pocket, indicating a CH/pi interaction. In addition, the isopropyl side chain of L-Val(7) was located at the enzyme surface between the S2 and S1' pockets with several van der Waals contacts. However, the amino acid (4) residue was not involved in a significant interaction with PPE. Comparison of inhibitor structures in different environments showed that FR901277 has a highly rigid bicyclic framework; however, it can slightly change its conformation according to the circumstances. The binding mode of FR901277 at the active site of PPE was directly applicable to that in HLE, after consideration of induced fit. The structure of the PPE-FR901277 complex provided much information regarding potential sites for modification of the physicochemical properties of FR901277.
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Affiliation(s)
- I Nakanishi
- Basic Research Laboratories, Fujisawa Pharmaceutical Co., Ltd., 2-1-6, Kashima, Yodogawa-ku, Osaka 532-8514, Japan
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Lopes F, Moreira R, Iley J. Acyloxymethyl as a drug protecting group. Part 6: N-acyloxymethyl- and N-[(aminocarbonyloxy)methyl]sulfonamides as prodrugs of agents containing a secondary sulfonamide group. Bioorg Med Chem 2000; 8:707-16. [PMID: 10819159 DOI: 10.1016/s0968-0896(00)00015-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Tertiary N-acyloxymethyl- and N-[(aminocarbonyloxy)methyl]sulfonamides were synthesised and evaluated as novel classes of potential prodrugs of agents containing a secondary sulfonamide group. The chemical and plasma hydrolyses of the title compounds were studied by HPLC. Tertiary N-acyloxymethylsulfonamides are slowly and quantitatively hydrolysed to the parent sulfonamide in pH 7.4 phosphate buffer, with half-lives ranging from 20 h, for 7d, to 30 days, for 7g. Quantitative formation of the parent sulfonamide also occurs in human plasma, the half-lives being within 0.2-2.0 min for some substrates. The rapid rate of hydrolysis can be ascribed to plasma cholinesterase, as indicated by the complete inhibition observed at [eserine] = 0.10 mM. These results suggest that tertiary N-acyloxymethylsulfonamides are potentially useful prodrugs for agents containing a secondary sulfonamide group, especially with pKa < 8, combining a high stability in aqueous media with a high rate of plasma activation. In contrast, N-[(aminocarbonyloxy)methyl]sulfonamides 7h-j do not liberate the parent sulfonamide either in aqueous buffers or in human plasma and thus appear to be unsuitable for development as sulfonamide prodrugs.
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Affiliation(s)
- F Lopes
- CECF, Faculty of Pharmacy, University of Lisbon, Portugal
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Macchia B, Gentili D, Macchia M, Mamone F, Martinelli A, Orlandini E, Rossello A, Cercignani G, Pierotti R, Allegretti M, Asti C, Caselli G. Synthesis, inhibitory activity towards human leukocyte elastase and molecular modelling studies of 1-carbamoyl-4-methyleneaminoxyazetidinones. Eur J Med Chem 2000; 35:53-67. [PMID: 10733603 DOI: 10.1016/s0223-5234(00)00111-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Some monocyclic beta-lactam derivatives of type 3 (MAOAs) in which the leaving group (LG) on the C(4) is a methyleneaminoxy moiety, were synthesised and tested in vitro and in vivo for their inhibitory activity towards human leukocyte elastase (HLE). Some compounds showed an appreciable in vitro inhibitory activity against this enzyme. Effects on the anti-HLE activity due to the nature of the substituents R and R(1) present on their LG were observed and rationalised by means of molecular modelling techniques. The results of in vivo pharmacological tests indicated that MAOAs, while showing an inhibitory activity on the haemorrhage induced by HLE, did not exhibit any effects due to the R and R(1) substituents.
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Affiliation(s)
- B Macchia
- Dipartimento di Scienze Farmaceutiche, Facoltà di Farmacia, Università degli Studi di Pisa, Via Bonanno, 6, 56100, Pisa, Italy
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24
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Reiner JE, Lim-Wilby MS, Brunck TK, Ha-Uong T, Goldman EA, Abelman MA, Nutt RF, Semple JE, Tamura SY. Investigation of the S3 site of thrombin: design, synthesis and biological activity of 4-substituted 3-amino-2-pyridones incorporating P1-argininals. Bioorg Med Chem Lett 1999; 9:895-900. [PMID: 10206557 DOI: 10.1016/s0960-894x(99)00102-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A novel scaffold for P4-P2 dipeptide mimics containing a rigid pyridone spacer was designed based on a virtual library strategy. Several selected nonpeptidic 4-aralkyl or 4-alkylpyridones incorporating a P1-argininal sequence were prepared. The modeling studies, synthesis and biological activities of these unique pyridone derivatives are reported herein.
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Affiliation(s)
- J E Reiner
- Corvas International, Inc., Department of Medicinal Chemistry, San Diego, California 92121, USA
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25
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Abstract
A series of thieno[2,3-d][1,3]oxazin-4-ones was synthesized and evaluated in vitro for inhibitory activity toward human leukocyte elastase. New synthetic routes to 2-alkoxy-, 2-alkylthio-, and 2-sec-amino-substituted derivatives are reported. This study demonstrates the versatility of 2-aminothiophenes prepared by Gewald reaction as a synthetic entry to serine protease-inhibiting, fused 1,3-oxazin-4-ones. Introduction of ethoxy, n-propoxy, and ethylthio groups at C-2 delivered the most potent inhibitors of this series with Ki values lower than 11 nM. Kinetic studies and product analyses revealed the formation of acyl-enzymes as a result of the attack of the active site serine at the carbon C-4 and subsequent deacylation. This mode of action is similar to the inhibition of serine proteases by 4H-3,1-benzoxazin-4-ones. Replacement of the benzene ring in benzoxazinones by a (substituted) thiophene led to improved hydrolytic stability and retained inhibitory potency.
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Affiliation(s)
- M Gütschow
- Institute of Pharmacy, University of Leipzig, D-04103 Leipzig, Germany, and Novartis Pharma AG, CH-4002 Basel, Switzerland
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26
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Veale CA, Bernstein PR, Bohnert CM, Brown FJ, Bryant C, Damewood JR, Earley R, Feeney SW, Edwards PD, Gomes B, Hulsizer JM, Kosmider BJ, Krell RD, Moore G, Salcedo TW, Shaw A, Silberstein DS, Steelman GB, Stein M, Strimpler A, Thomas RM, Vacek EP, Williams JC, Wolanin DJ, Woolson S. Orally active trifluoromethyl ketone inhibitors of human leukocyte elastase. J Med Chem 1997; 40:3173-81. [PMID: 9379436 DOI: 10.1021/jm970250z] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
This paper describes the development a series of peptidyl trifluoromethyl ketone inhibitors of human leukocyte elastase which are found to have excellent pharmacological profiles. Methods have been developed that allow for the synthesis of these inhibitors in stereochemically pure form. Two of these compounds, 1k and 1l, have high levels of oral bioavailability in several species. Compound 1l has entered development as ZD8321 and is presently undergoing clinical evaluation. These compounds demonstrate that peptidyl trifluoromethyl ketone inhibitors can achieve high levels of oral activity and bioavailability, and therefore they may prove useful as therapeutic agents in the treatment of diseases in which elastase is implicated.
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Affiliation(s)
- C A Veale
- Department of Medicinal Chemistry, ZENECA Pharmaceuticals, A Business Unit of ZENECA Inc., Wilmington, Delaware 19897, USA
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27
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Affiliation(s)
- Robert E. Babine
- Agouron Pharmaceuticals, Inc., 3565 General Atomics Court, San Diego, California 92121-1122
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28
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Edwards PD, Andisik DW, Bryant CA, Ewing B, Gomes B, Lewis JJ, Rakiewicz D, Steelman G, Strimpler A, Trainor DA, Tuthill PA, Mauger RC, Veale CA, Wildonger RA, Williams JC, Wolanin DJ, Zottola M. Discovery and biological activity of orally active peptidyl trifluoromethyl ketone inhibitors of human neutrophil elastase. J Med Chem 1997; 40:1876-85. [PMID: 9191965 DOI: 10.1021/jm960819g] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Previously we had shown that tripeptidyl trifluoromethyl ketones (TFMKs) possessing an N-terminal diarylacylsulfonamide, such as ICI 200,880 and ICI 200,355, displayed unparalleled protection against the lung damage induced by human neutrophil elastase (HNE) when the inhibitors were administered intratracheally. Since the diarylacylsulfonamides were designed specifically to afford a long residence time in the lung, it was not unexpected that inhibitors from this class of TFMKs were not active when administered orally. Upon evaluating a large number of peptidyl TFMKs possessing a variety of N-terminal groups, several compounds were identified which demonstrated oral activity. Compounds were evaluated for their oral activity by measuring their ability to inhibit the increase in lung weight relative to body weight (Lw/Bw), the increase in red blood cells, and the increase in white blood cells induced by intratracheally administered HNE (100 micrograms/hamster). A number of tripeptidyl trifluoromethyl ketones containing neutral N-terminal groups displayed good oral activity, while those containing basic, acidic, or polar groups did not. Compound 50, possessing an N-terminal 4-(CH3O)C6H4CO group, was particularly effective, reducing Lw/Bw by 77%, red cells by 89%, and white cells by 91% when dosed at 37.5 mg/kg orally. Thus, by modifying the N-terminal group of tripeptidyl TFMKs, inhibitors can be designed which are effective in vivo when administered either orally or intratracheally.
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Affiliation(s)
- P D Edwards
- Department of Medicinal Chemistry, ZENECA Pharmaceuticals, A Business Unit of ZENECA Inc., Wilmington, Delaware 19850-5437, USA
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29
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Tamura SY, Edward Semple J, Reiner JE, Goldman EA, Brunck TK, Lim-wilby MS, Carpenter SH, Rote WE, Oldeshulte GL, Richard BM, Nutt RF, Ripka WC. Design and synthesis of a novel class of thrombin inhibitors incorporating heterocyclic dipeptide surrogates. Bioorg Med Chem Lett 1997; 7:1543-8. [DOI: 10.1016/s0960-894x(97)00258-8] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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30
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Beholz LG, Benovsky P, Ward DL, Barta NS, Stille JR. Formation of Dihydropyridone- and Pyridone-Based Peptide Analogs through Aza-Annulation of β-Enamino Ester and Amide Substrates with α-Amido Acrylate Derivatives. J Org Chem 1997. [DOI: 10.1021/jo9600520] [Citation(s) in RCA: 73] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lars G. Beholz
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824-1322
| | - Petr Benovsky
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824-1322
| | - Donald L. Ward
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824-1322
| | - Nancy S. Barta
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824-1322
| | - John R. Stille
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824-1322
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31
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Shantare D, Yure M, Belyakov SV, Petrova MV, Gudrinietse É. 2-Oxooxazolopyridines. 1. Synthesis of alkyl N-(2-oxo-3-pyridyl)carbamates. Chem Heterocycl Compd (N Y) 1997. [DOI: 10.1007/bf02256763] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Böhm HJ, Klebe G. Was läßt sich aus der molekularen Erkennung in Protein-Ligand-Komplexen für das Design neuer Wirkstoffe lernen? Angew Chem Int Ed Engl 1996. [DOI: 10.1002/ange.19961082205] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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34
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Earley RA, Tini LP. Versatile Multidimensional Chromatographic System for Drug Discovery as Exemplified by the Analysis of a Nonpeptidic Inhibitor of Human Leukocyte Elastase. J LIQ CHROMATOGR R T 1996. [DOI: 10.1080/10826079608014035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Roger A. Earley
- a Department of Drug Disposition and Metabolism Zeneca Pharmaceuticals , P.O. Box 15437, Wilmington, DE, 19850-5437
| | - Leonard P. Tini
- a Department of Drug Disposition and Metabolism Zeneca Pharmaceuticals , P.O. Box 15437, Wilmington, DE, 19850-5437
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35
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Edwards PD, Andisik DW, Strimpler AM, Gomes B, Tuthill PA. Nonpeptidic inhibitors of human neutrophil elastase. 7. Design, synthesis, and in vitro activity of a series of pyridopyrimidine trifluoromethyl ketones. J Med Chem 1996; 39:1112-24. [PMID: 8676347 DOI: 10.1021/jm950684z] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Using molecular modeling and the information derived from X-ray crystal structures of human neutrophil elastase (HNE) and porcine pancreatic elastase (PPE) complexed to peptidic ligands, we have developed a new series of nonpeptidic inhibitors of HNE, the pyridopyrimidine trifluoromethyl ketones (TFMKs). These bicyclic inhibitors were designed to extend the concept of the related pyridone trifluoromethyl ketones by incorporating a rigidly positioned carbonyl group to participate in a hydrogen bonding interaction with the backbone NH groups of Gly-218 and Gly-219 of the enzyme. In addition, the pyrimidine ring serves as a scaffold to vector substituents toward the S5-S4 subsites of the enzyme's extended binding pocket. Furthermore, the heteroatoms of the pyrimidine ring generally increase the aqueous solubility of the pyridopyrimidines relative to pyridone TFMKs. Pyridopyrimidine TFMKs containing a 6-phenyl substituent afforded potent inhibitors of elastase, and several inhibitors from this class of compounds possessed aqueous solubilities of > 0.1 mg/mL and Ki values of < or = 10 nM.
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Affiliation(s)
- P D Edwards
- Department of Medicinal Chemistry, ZENECA Pharmaceuticals, Wilmington, Delaware 19850-5437, USA
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36
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Abstract
Recent advances in computational methods for drug design include developments in quantitative structure-activity relationship approaches as well as novel structure-based strategies. Many new protein structures of pharmaceutical interest have been solved, a number of which contain a bound inhibitor. Continued progress has been reported in algorithms for de novo design, ligand docking, and scoring of protein-ligand binding energy. Meanwhile, several drugs that were designed by intensive use of computational methods are advancing through clinical trials.
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