101
|
Almerico AM, Tutone M, Lauria A. Receptor-guided 3D-QSAR approach for the discovery of c-kit tyrosine kinase inhibitors. J Mol Model 2011; 18:2885-95. [PMID: 22127610 DOI: 10.1007/s00894-011-1304-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2011] [Accepted: 11/07/2011] [Indexed: 12/21/2022]
Abstract
Studies of the the three-dimensional quantitative structure-activity relationships for ninety-five c-kit tyrosine kinase inhibitors were performed. Based on a co-crystallized compound (1 T46), known inhibitors were aligned with c-kit by induced-fit docking, and multiple training/test set splitting was performed to validate the selected pharmacophore model. The best pharmacophore model consisted of five features: one hydrogen-bond donor and four aromatic rings. Reliable statistics were obtained (R(2) = 0.95, R(pred) (2) = 0.75), and the model was validated by using it to select c-kit inhibitors from a database; 82.1% of the hits it retrieved were active. Accordingly, our model can be reliably used to identify new c-kit inhibitors, and can provide useful information when designing new inhibitors.
Collapse
Affiliation(s)
- Anna Maria Almerico
- Dipartimento di Scienze e Tecnologie Molecolari e Biomolecolari, Sezione di Chimica Farmaceutica e Biologica, Università di Palermo, Via Archirafi 32, 90123 Palermo, Italy.
| | | | | |
Collapse
|
102
|
Phosphonium-mediated cyclization of N-(2-aminophenyl)thioureas: efficient synthesis of 2-aminobenzimidazoles. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.05.146] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
|
103
|
Synthesis and cytotoxic evaluation of novel N-methyl-4-phenoxypicolinamide derivatives. Molecules 2011; 16:5130-41. [PMID: 21694676 PMCID: PMC6264436 DOI: 10.3390/molecules16065130] [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: 06/01/2011] [Revised: 06/09/2011] [Accepted: 06/10/2011] [Indexed: 11/17/2022] Open
Abstract
A series of N-methyl-4-phenoxypicolinamide derivatives were synthesized and evaluated in vitro for their cytotoxic activity against A549, H460 and HT29 cell lines. Pharmacological data indicated that some of the target compounds possessed marked antiproliferative activity, superior to that of the reference drug sorafenib. As the most promising compound, 8e exhibited potent cytotoxicity with the IC(50) value of 3.6, 1.7 and 3.0 μM against A549, H460 and HT-29 cell lines, respectively.
Collapse
|
104
|
Mucs D, Bryce RA, Bonnet P. Application of shape-based and pharmacophore-based in silico screens for identification of Type II protein kinase inhibitors. J Comput Aided Mol Des 2011; 25:569-81. [PMID: 21681554 DOI: 10.1007/s10822-011-9442-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2011] [Accepted: 06/01/2011] [Indexed: 01/19/2023]
Abstract
The identification of new, potent and selective inhibitors of important protein kinase targets is a major goal of drug discovery. Here we analyze the crystal structures of 55 protein kinase complexes with Type II inhibitors and find they adopt a conserved twisted V-shape, with an angle of 121 ± 8° and twist of 78 ± 8°. The tightly conserved twist appears important in ensuring ligands curve around the protein backbone and towards the deep pocket. From this, we develop predictive pharmacophore- and shape-based screens to identify Type II inhibitors from a database which also contains Type I inhibitors as decoys. Both approaches exhibit a good level of discrimination for Type II molecules. The most effective pharmacophore model requires six features and three excluded volume regions. Shape-based screening using ROCS generally performs at least as well as pharmacophore approaches. There is only a moderate dependence of shape-based or pharmacophore-based screens on the underlying conformer generator (MOE, Macromodel, Omega and SPE), as well as on ligand linkage chemistry (amide and urea). Finally, we apply our approach to retrieval of Type II inhibitors from a modified version of the DUD database, containing over 104,000 compounds. We observe good enrichment, providing further evidence that the in silico screens developed here will constitute useful guides for identification of small molecule inhibitors targetting protein kinases in their inactive conformational state.
Collapse
Affiliation(s)
- Daniel Mucs
- School of Pharmacy and Pharmaceutical Sciences, University of Manchester, Oxford Road, Manchester, M13 9PT, UK
| | | | | |
Collapse
|
105
|
Design and synthesis of 5,6-fused heterocyclic amides as Raf kinase inhibitors. Bioorg Med Chem Lett 2011; 21:3286-9. [DOI: 10.1016/j.bmcl.2011.04.023] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2011] [Revised: 04/02/2011] [Accepted: 04/07/2011] [Indexed: 11/19/2022]
|
106
|
Backes AC, Müller G, Sennhenn PC. Design Principles of Deep Pocket-Targeting Protein Kinase Inhibitors. PROTEIN KINASES AS DRUG TARGETS 2011. [DOI: 10.1002/9783527633470.ch6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
107
|
Rostamizadeh S, Aryan R, Ghaieni HR. Aqueous 1 M Glucose Solution as a Novel and Fully Green Reaction Medium and Catalyst for the Oxidant-Free Synthesis of 2-Arylbenzimidazoles. SYNTHETIC COMMUN 2011. [DOI: 10.1080/00397911.2010.492460] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
108
|
Affiliation(s)
| | - Vladimir V. Grushin
- The Institute of Chemical Research of Catalonia (ICIQ), Tarragona 43007, Spain
| |
Collapse
|
109
|
Li W, Zhai X, Zhong Z, Li G, Pu Y, Gong P. Design, Synthesis and Evaluation of Novel Rhodanine-containing Sorafenib Analogs as Potential Antitumor Agents. Arch Pharm (Weinheim) 2011; 344:349-57. [DOI: 10.1002/ardp.201000326] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2010] [Revised: 12/13/2010] [Accepted: 12/15/2010] [Indexed: 11/11/2022]
|
110
|
Planesas JM, Claramunt RM, Teixidó J, Borrell JI, Pérez-Nueno VI. Improving VEGFR-2 Docking-Based Screening by Pharmacophore Postfiltering and Similarity Search Postprocessing. J Chem Inf Model 2011; 51:777-87. [DOI: 10.1021/ci1002763] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Jesús M. Planesas
- Departamento de Química Orgánica y Bio-Orgánica, Facultad de Ciencias, UNED, Senda del Rey 9, E-28040 Madrid, Spain
| | - Rosa M. Claramunt
- Departamento de Química Orgánica y Bio-Orgánica, Facultad de Ciencias, UNED, Senda del Rey 9, E-28040 Madrid, Spain
| | - Jordi Teixidó
- Grup d'Enginyeria Molecular, Institut Químic de Sarriá (IQS), Universitat Ramon Llull, Barcelona, Spain
| | - José I. Borrell
- Grup d'Enginyeria Molecular, Institut Químic de Sarriá (IQS), Universitat Ramon Llull, Barcelona, Spain
| | - Violeta I. Pérez-Nueno
- Grup d'Enginyeria Molecular, Institut Químic de Sarriá (IQS), Universitat Ramon Llull, Barcelona, Spain
| |
Collapse
|
111
|
Marzaro G, Chilin A, Guiotto A, Uriarte E, Brun P, Castagliuolo I, Tonus F, González-Díaz H. Using the TOPS-MODE approach to fit multi-target QSAR models for tyrosine kinases inhibitors. Eur J Med Chem 2011; 46:2185-92. [PMID: 21447431 DOI: 10.1016/j.ejmech.2011.02.072] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2010] [Revised: 01/10/2011] [Accepted: 02/28/2011] [Indexed: 11/24/2022]
Abstract
Tyrosine kinases constitute an eligible class of target for novel drug discovery. They resulted often overexpressed and/or deregulated in several cancer diseases. Thus, the development of novel tyrosine kinases inhibitors is of value, as well as the finding of novel cheminformatic tools for their design. Among the different ways to rationally design novel compounds, the Quantitative Structure-Activity Relationship (QSAR) plays a key role. The QSAR approach, in fact, allow the prediction of activity against a number of targets (multi-target QSAR), thus leading to models able to predict not only the activity of a compound, but also its selectivity versus a set of targets. Despite it is well known that tyrosine kinase inhibitors have to show multi-kinases inhibitory potency to be useful in anticancer therapy, only few multi-target computational tools have been developed to help medicinal chemists in the design of novel compounds. Herein we present the development of several multi-target classification QSAR (mtc-QSAR) models useful to assess the activity profile of the tyrosine kinases inhibitors.
Collapse
Affiliation(s)
- Giovanni Marzaro
- Department of Pharmaceutical Sciences, University of Padova, via marzolo 5, 35131 Padua, Italy.
| | | | | | | | | | | | | | | |
Collapse
|
112
|
Jones RC, Chojnacka MW, Quail JW, Gardiner MG, Decken A, Yates BF, Gossage RA. Oxazoles revisited: On the nature of binding of benzoxazole and 2-methylbenzoxazole with the zinc and palladium halides. Dalton Trans 2011; 40:1594-600. [DOI: 10.1039/c0dt01266a] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
|
113
|
Peng J, Zong C, Ye M, Chen T, Gao D, Wang Y, Chen C. Direct transition-metal-free intramolecular C–O bond formation: synthesis of benzoxazole derivatives. Org Biomol Chem 2011; 9:1225-30. [DOI: 10.1039/c0ob00454e] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
114
|
Zeng H, Zhang H. Combined 3D-QSAR modeling and molecular docking study on 1,4-dihydroindeno[1,2-c]pyrazoles as VEGFR-2 kinase inhibitors. J Mol Graph Model 2010; 29:54-71. [DOI: 10.1016/j.jmgm.2010.04.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2009] [Revised: 03/05/2010] [Accepted: 04/18/2010] [Indexed: 12/01/2022]
|
115
|
Sun M, Wu X, Chen J, Cai J, Cao M, Ji M. Design, synthesis, and in vitro antitumor evaluation of novel diaryl ureas derivatives. Eur J Med Chem 2010; 45:2299-306. [PMID: 20181414 DOI: 10.1016/j.ejmech.2010.02.005] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2009] [Revised: 01/31/2010] [Accepted: 02/01/2010] [Indexed: 01/07/2023]
|
116
|
Bunce RA, Schammerhorn JE. 6-Nitro-1,2,3,4-tetrahydroquinoline-4-carboxylic Esters and 7-Nitro-3,4-dihydroquinoxaline- 1(2H)-carboxylic Esters by a Tandem Reductive Amination-SNAr Reaction. ORG PREP PROCED INT 2010. [DOI: 10.1080/00304940903517506] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
117
|
Papakyriakou A, Katsarou M, Belimezi M, Karpusas M, Vourloumis D. Discovery of Potent Vascular Endothelial Growth Factor Receptor-2 Inhibitors. ChemMedChem 2010; 5:118-29. [DOI: 10.1002/cmdc.200900373] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
118
|
Saha P, Ali MA, Ghosh P, Punniyamurthy T. Cobalt-catalyzed intramolecular C–N and C–O cross-coupling reactions: synthesis of benzimidazoles and benzoxazoles. Org Biomol Chem 2010; 8:5692-9. [DOI: 10.1039/c0ob00405g] [Citation(s) in RCA: 121] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
119
|
Park KD, Morieux P, Salomé C, Cotten SW, Reamtong O, Eyers C, Gaskell SJ, Stables JP, Liu R, Kohn H. Lacosamide isothiocyanate-based agents: novel agents to target and identify lacosamide receptors. J Med Chem 2009; 52:6897-911. [PMID: 19795888 DOI: 10.1021/jm9012054] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
(R)-Lacosamide ((R)-2, (R)-N-benzyl 2-acetamido-3-methoxypropionamide) has recently gained regulatory approval for the treatment of partial-onset seizures in adults. Whole animal pharmacological studies have documented that (R)-2 function is unique. A robust strategy is advanced for the discovery of interacting proteins associated with function and toxicity of (R)-2 through the use of (R)-2 analogues, 3, which contain "affinity bait (AB)" and "chemical reporter (CR)" functional groups. In 3, covalent modification of the interacting proteins proceeds at the AB moiety, and detection or isolation of the selectively captured protein occurs through the bioorthogonal CR group upon reaction with an appropriate probe. We report the synthesis, pharmacological evaluation, and interrogation of the mouse soluble brain proteome using 3 where the AB group is an isothiocyanate moiety. One compound, (R)-N-(4-isothiocyanato)benzyl 2-acetamido-3-(prop-2-ynyloxy)propionamide ((R)-9), exhibited excellent seizure protection in mice, and like (R)-2, anticonvulsant activity principally resided in the (R)-stereoisomer. Several proteins were preferentially labeled by (R)-9 compared with (S)-9, including collapsin response mediator protein 2.
Collapse
Affiliation(s)
- Ki Duk Park
- Division of Medicinal Chemistry and Natural Products, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599-7568, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
120
|
Lu X, Chen Y, You Q. Pharmacophore Guided 3D-QSAR CoMFA Analysis of Amino Substituted Nitrogen Heterocycle Ureas as KDR Inhibitors. ACTA ACUST UNITED AC 2009. [DOI: 10.1002/qsar.200960032] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
121
|
Saha P, Ramana T, Purkait N, Ali MA, Paul R, Punniyamurthy T. Ligand-Free Copper-Catalyzed Synthesis of Substituted Benzimidazoles, 2-Aminobenzimidazoles, 2-Aminobenzothiazoles, and Benzoxazoles. J Org Chem 2009; 74:8719-25. [DOI: 10.1021/jo901813g] [Citation(s) in RCA: 295] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Prasenjit Saha
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India
| | - Tamminana Ramana
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India
| | - Nibadita Purkait
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India
| | - Md Ashif Ali
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India
| | - Rajesh Paul
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India
| | | |
Collapse
|
122
|
Luzzio FA, Chen J. Synthetically Useful Brønsted Acid-Promoted Arylbenzyl Ether → o-Benzylphenol Rearrangements. J Org Chem 2009; 74:5629-32. [DOI: 10.1021/jo9007833] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Frederick A. Luzzio
- Department of Chemistry, University of Louisville, 2320 South Brook Street, Louisville, Kentucky 40292
| | - Juan Chen
- Department of Chemistry, University of Louisville, 2320 South Brook Street, Louisville, Kentucky 40292
| |
Collapse
|
123
|
Abstract
Protein kinases catalyse key phosphorylation reactions in signalling cascades that affect every aspect of cell growth, differentiation and metabolism. The kinases have become prime targets for drug intervention in the diseased state, especially in cancer. There are currently 10 drugs that have been approved for clinical use and many more in clinical trials. This review summarises the structural basis for protein kinase inhibition and discusses the mode of action for each of the approved drugs in the light of structural results. All but one of the approved compounds target the ATP binding site on the kinase. Both the active and inactive conformations of protein kinases have been used in strategies to produce potent and selective compounds. Targeting the inactive conformation can give high specificity. Targeting the active conformation is favourable where the diseased state has arisen from activating mutations, but such inhibitors generally target several protein kinases. Drug resistance mutations are a potential risk for both conformational states, where drug-binding regions are not directly involved in catalysis. Imatinib (Glivec), the most successful of protein kinase inhibitors, targets the inactive conformation of ABL tyrosine kinase. Newer compounds, such as dasatinib, which targets the ABL active state, have been developed to increase potency and have proved effective for some, but not all, drug-resistant mutations. The first epidermal growth factor receptor (EGFR) inhibitors in clinical use [gefitinib (Iressa) and erlotinib (Tarceva)] targeted the active form of the kinase, and this proved advantageous for patients whose cancer was caused by mutations that resulted in a constitutively active EGFR kinase domain. Newer approved compounds, such as lapatinib (Tykerb), target the inactive conformation with high potency. A further compound that forms a covalent attachment to the kinase has been found to overcome one of the major drug resistance mutations, where the effectiveness of the drug in vivo is dependent on its ability to compete successfully in the presence of cellular concentrations of ATP. Inhibitors of vascular endothelial growth factor receptor (VEGFR) kinase against cancer angiogenesis show the advantage of some relaxation in specificity. Sorafenib, originally developed as RAF inhibitor, is now in clinical use as a VEGFR inhibitor. Temsirolimus (a derivative of rapamycin) is the only example of a drug in clinical use that does not target the kinase ATP site. Instead rapamycin, when in complex with the protein FKBP12, effectively targets mTOR kinase at a site located on a domain, the FRB domain, that appears to be involved in localisation or substrate docking.
Collapse
|
124
|
Pourgholami MH, Cai ZY, Wang L, Badar S, Links M, Morris DL. Inhibition of cell proliferation, vascular endothelial growth factor and tumor growth by albendazole. Cancer Invest 2009; 27:171-7. [PMID: 19235589 DOI: 10.1080/07357900802210752] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Vascular endothelial growth factor (VEGF) is the key molecule mediating tumor growth and malignant ascites formation. We recently reported that, in an end stage OVCAR-3 xenograft model, albendazole (ABZ) suppresses ascites formation, but not tumor growth. Hence, in the present study, we assessed the effect of ABZ on in vitro OVCAR-3 cell proliferation plus in vivo tumor growth, however, initiating ABZ treatment at mid stage (3 weeks post cell inoculation) rather than end stage disease. Here, ABZ treatment led to potent inhibition of cell proliferation, VEGF suppression, complete inhibition of ascites formation and most strikingly arrest of tumor growth.
Collapse
Affiliation(s)
- Mohammad Hossein Pourgholami
- Cancer Research laboratories, University of New South Wales, Department of Surgery, St George Hospital (SESIAHS), Sydney, Australia
| | | | | | | | | | | |
Collapse
|
125
|
Kufareva I, Abagyan R. Type-II kinase inhibitor docking, screening, and profiling using modified structures of active kinase states. J Med Chem 2009; 51:7921-32. [PMID: 19053777 DOI: 10.1021/jm8010299] [Citation(s) in RCA: 151] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Type-II kinase inhibitors represent a class of chemicals that trap their target kinases in an inactive, so-called DFG-out state, occupying a hydrophobic pocket adjacent to the ATP binding site. These compounds are often more specific than those that target active DFG-in kinase conformations. Unfortunately, the discovery of novel type-II scaffolds presents a considerable challenge, partially because the lack of compatible kinase structures makes structure-based methods inapplicable. We present a computational protocol for converting multiple available DFG-in structures of various kinases (approximately 70% of mammalian structural kinome) into accurate and specific models of their type-II bound state. The models, described as deletion-of-loop Asp-Phe-Gly-in (DOLPHIN) kinase models, demonstrate exceptional performance in various inhibitor discovery applications, including compound pose prediction, screening, and in silico activity profiling. Given the abundance of the DFG-in structures, the presented approach opens possibilities for kinome-wide discovery of specific molecules targeting inactive kinase states.
Collapse
|
126
|
Gil C, Bräse S. Solid-Phase Synthesis of Biologically Active Benzoannelated Nitrogen Heterocycles: An Update. ACTA ACUST UNITED AC 2008; 11:175-97. [DOI: 10.1021/cc800102t] [Citation(s) in RCA: 124] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Carmen Gil
- Instituto de Química Médica (CSIC), Juan de la Cierva 3, 28006 Madrid, Spain, and Institut für Organische Chemie, Universität Karlsruhe (TH) and Karlsruhe Institute of Technology, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
| | - Stefan Bräse
- Instituto de Química Médica (CSIC), Juan de la Cierva 3, 28006 Madrid, Spain, and Institut für Organische Chemie, Universität Karlsruhe (TH) and Karlsruhe Institute of Technology, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
| |
Collapse
|
127
|
Du J, Lei B, Qin J, Liu H, Yao X. Molecular modeling studies of vascular endothelial growth factor receptor tyrosine kinase inhibitors using QSAR and docking. J Mol Graph Model 2008; 27:642-54. [PMID: 19081278 DOI: 10.1016/j.jmgm.2008.10.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2008] [Revised: 10/17/2008] [Accepted: 10/20/2008] [Indexed: 10/21/2022]
Abstract
The vascular endothelial growth factor (VEGF) and its receptor tyrosine kinases VEGFR-2 or kinase insert domain receptor (KDR) are attractive targets for the development of novel anticancer agents. In the present work, comparative molecular field analysis (CoMFA) and comparative molecular similarity indices analysis (CoMSIA) were performed on a series of selective inhibitors of KDR. Docking studies were performed to explore the binding mode between all of the inhibitors and the KDR and produce the bioactive conformation of each compound in the whole dataset. Two conformer-based alignment strategies were employed to construct reliable 3D-QSAR models. The docked conformer-based alignment strategy gave the best 3D-QSAR models. The best CoMFA and CoMSIA models gave a cross-validated coefficient q(2) of 0.546 and 0.715, non-cross-validated r(2) values of 0.936 and 0.961, predicted r(2) values of 0.673 and 0.797, respectively. The information obtained from molecular modeling studies were very helpful to design some novel selective inhibitors of KDR with desired activity.
Collapse
Affiliation(s)
- Juan Du
- Department of Chemistry, Lanzhou University, Lanzhou, China
| | | | | | | | | |
Collapse
|
128
|
Bonnamour J, Bolm C. Iron-Catalyzed Intramolecular O-Arylation: Synthesis of 2-Aryl Benzoxazoles. Org Lett 2008; 10:2665-7. [DOI: 10.1021/ol800744y] [Citation(s) in RCA: 156] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Julien Bonnamour
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, D-52056 Aachen, Germany
| | - Carsten Bolm
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, D-52056 Aachen, Germany
| |
Collapse
|
129
|
Salcedo A, Neuville L, Zhu J. Palladium-Catalyzed Intramolecular C-Arylation of Benzylic Carbon: Synthesis of 3-Benzoxazolylisoindolinones by a Sequence of Ugi-4CR/Postfunctionalization. J Org Chem 2008; 73:3600-3. [DOI: 10.1021/jo800266y] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Angela Salcedo
- Institut de Chimie des Substances Naturelles, CNRS, 91198 Gif-sur-Yvette Cedex, France
| | - Luc Neuville
- Institut de Chimie des Substances Naturelles, CNRS, 91198 Gif-sur-Yvette Cedex, France
| | - Jieping Zhu
- Institut de Chimie des Substances Naturelles, CNRS, 91198 Gif-sur-Yvette Cedex, France
| |
Collapse
|
130
|
Harmange JC, Weiss MM, Germain J, Polverino AJ, Borg G, Bready J, Chen D, Choquette D, Coxon A, DeMelfi T, DiPietro L, Doerr N, Estrada J, Flynn J, Graceffa RF, Harriman SP, Kaufman S, La DS, Long A, Martin MW, Neervannan S, Patel VF, Potashman M, Regal K, Roveto PM, Schrag ML, Starnes C, Tasker A, Teffera Y, Wang L, White RD, Whittington DA, Zanon R. Naphthamides as Novel and Potent Vascular Endothelial Growth Factor Receptor Tyrosine Kinase Inhibitors: Design, Synthesis, and Evaluation¶. J Med Chem 2008; 51:1649-67. [DOI: 10.1021/jm701097z] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
131
|
Parcerisa J, Romero M, Pujol MD. Synthesis of 2-substituted-7-azaindoles from 2-amino-3-picolin. Tetrahedron 2008. [DOI: 10.1016/j.tet.2007.11.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|