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Enantiopure C1-symmetric N-Heterocyclic Carbene Ligands from Desymmetrized meso-1,2-Diphenylethylenediamine: Application in Ruthenium-Catalyzed Olefin Metathesis. Catalysts 2016. [DOI: 10.3390/catal6110177] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Bottoni A, Calvaresi M, Cosimelli B, Mazzanti A, Rambaldi M, Spinelli D. An Unexpected Pathway to Enantiomerization of Hemithioketals in Toluene Involving a Dimeric Transition State: A Combined Experimental and Computational Study. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500421] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Carosati E, Ioan P, Barrano GB, Caccamese S, Cosimelli B, Devlin FJ, Severi E, Spinelli D, Superchi S, Budriesi R. Synthesis and L-type calcium channel blocking activity of new chiral oxadiazolothiazinones. Eur J Med Chem 2015; 92:481-9. [PMID: 25596477 DOI: 10.1016/j.ejmech.2014.12.044] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2014] [Revised: 12/19/2014] [Accepted: 12/24/2014] [Indexed: 10/24/2022]
Abstract
Oxadiazolo[3,4-c][1,4]thiazin-3-ones are cardiovascular agents that block L-type calcium channels. Previous data of cardiac and vasorelaxant activity on guinea-pig for several derivatives indicated the two positions ortho to the thiazine's sulphur as crucial for modulating the activity; but these positions are likely susceptible to metabolic biotransformations, as indicated by in silico predictions. We designed new derivatives, and obtained three negative inotropic agents with EC50 in the low nanomolar range, more potent than all the precursors published so far. In particular, benzocondensation at the thiazine ring led to 3a (EC50 = 0.013 μM) and 3b (EC50 = 0.006 μM). Besides negative inotropy, we also observed relaxant activity on nonvascular muscle in the micromolar range. We resolved the new derivatives by chiral chromatography, and determined their absolute configuration by comparing experimental and calculated chiroptical properties (VCD, ECD and ORD): they hold the same absolute configuration-optical rotation relationship, (S)-(+)/(R)-(-). Both cardiac and nonvascular activity are majorly or mostly retained in the R-form for all the compounds, but for the nonvascular activity we observed a strong stereoselectivity for 3a, with the R-form in the nanomolar range (IC50 = 0.020 μM) and 259-fold more potent than the S-one.
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Affiliation(s)
- Emanuele Carosati
- Dipartimento di Chimica, Biologia e Biotecnologie, Università di Perugia, Via Elce di Sotto 10, 06123 Perugia, Italy.
| | - Pierfranco Ioan
- Dipartimento di Farmacia e Biotecnologie, Università di Bologna, Via Belmeloro 6, 40126 Bologna, Italy
| | | | - Salvatore Caccamese
- Dipartimento di Scienze Chimiche, Università di Catania, Viale A. Doria 6, 95125 Catania, Italy
| | - Barbara Cosimelli
- Dipartimento di Farmacia, Università di Napoli "Federico II", Via D. Montesano 49, 80131 Napoli, Italy.
| | - Frank J Devlin
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089-0744, USA
| | - Elda Severi
- Dipartimento di Farmacia, Università di Napoli "Federico II", Via D. Montesano 49, 80131 Napoli, Italy
| | - Domenico Spinelli
- Dipartimento di Chimica "G. Ciamician", Alma Mater Studiorum-Università di Bologna, Via Selmi 2, 40126 Bologna, Italy
| | - Stefano Superchi
- Dipartimento di Scienze, Università della Basilicata, Viale dell'Ateneo Lucano 10, 85100 Potenza, Italy
| | - Roberta Budriesi
- Dipartimento di Farmacia e Biotecnologie, Università di Bologna, Via Belmeloro 6, 40126 Bologna, Italy
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Frenna V, Palumbo Piccionello A, Cosimelli B, Ghelfi F, Spinelli D. The Boulton-Katritzky Reaction: A Kinetic Study of the Effect of 5-Nitrogen Substituents on the Rearrangement of Some (Z)-Phenylhydrazones of 3-Benzoyl-1,2,4-oxadiazoles. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402569] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Nijmeijer S, Vischer HF, Sirci F, Schultes S, Engelhardt H, de Graaf C, Rosethorne EM, Charlton SJ, Leurs R. Detailed analysis of biased histamine H₄ receptor signalling by JNJ 7777120 analogues. Br J Pharmacol 2014; 170:78-88. [PMID: 23351115 DOI: 10.1111/bph.12117] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Revised: 12/26/2012] [Accepted: 01/02/2013] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND AND PURPOSE The histamine H₄ receptor, originally thought to signal merely through Gαi proteins, has recently been shown to also recruit and signal via β-arrestin2. Following the discovery that the reference antagonist indolecarboxamide JNJ 7777120 appears to be a partial agonist in β-arrestin2 recruitment, we have identified additional biased hH₄R ligands that preferentially couple to Gαi or β-arrestin2 proteins. In this study, we explored ligand and receptor regions that are important for biased hH₄R signalling. EXPERIMENTAL APPROACH We evaluated a series of 48 indolecarboxamides with subtle structural differences for their ability to induce hH₄R-mediated Gαi protein signalling or β-arrestin2 recruitment. Subsequently, a Fingerprints for Ligands and Proteins three-dimensional quantitative structure-activity relationship analysis correlated intrinsic activity values with structural ligand requirements. Moreover, a hH₄R homology model was used to identify receptor regions important for biased hH₄R signalling. KEY RESULTS One indolecarboxamide (75) with a nitro substituent on position R7 of the aromatic ring displayed an equal preference for the Gαi and β-arrestin2 pathway and was classified as unbiased hH₄R ligand. The other 47 indolecarboxamides were β-arrestin2-biased agonists. Intrinsic activities of the unbiased as well as β-arrestin2-biased indolecarboxamides to induce β-arrestin2 recruitment could be correlated with different ligand features and hH₄R regions. CONCLUSION AND IMPLICATIONS Small structural modifications resulted in diverse intrinsic activities for unbiased (75) and β-arrestin2-biased indolecarboxamides. Analysis of ligand and receptor features revealed efficacy hotspots responsible for biased-β-arrestin2 recruitment. This knowledge is useful for the design of hH₄R ligands with biased intrinsic activities and aids our understanding of the mechanism of H₄R activation.
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Affiliation(s)
- S Nijmeijer
- Faculty of Sciences, Amsterdam Institute for Molecules, Medicines and Systems, VU University Amsterdam, The Netherlands
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6
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Cosimelli B, Frenna V, Rambaldi M, Severi E, Spinelli D. On the reactivity of nitrosoimidazoles with acids (the Cusmano–Ruccia reaction): a continuous source of new ring-into-ring interconversion. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.01.060] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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7
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Rosano C, Viale M, Cosimelli B, Severi E, Gangemi R, Ciogli A, De Totero D, Spinelli D. ABCB1 Structural Models, Molecular Docking, and Synthesis of New Oxadiazolothiazin-3-one Inhibitors. ACS Med Chem Lett 2013; 4:694-8. [PMID: 24900735 DOI: 10.1021/ml300436x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Accepted: 05/13/2013] [Indexed: 01/13/2023] Open
Abstract
Docking methods are powerful tools for in silico screening and drug lead generation and optimization. Here, we describe the synthesis of new inhibitors of ABCB1 whose design was based on construction and preliminary confirmation of a model for this membrane transporter of the ATP-binding cassette family. We chose the strategy to build our three-dimensional model of the ABCB1 transporter by homology. Atomic coordinates were then assayed for their reliability using the measured activity of some oxadiazolothiazin-3-one compounds. Once established their performance by docking analysis, we synthesized new compounds whose forecasted activity was tested by MTT and cytofluorimetric assays. Our docking model of MDR1, MONBD1, seems to reliably satisfy our need to design and forecast, on the basis of their LTCC blockers ability, the inhibitory activity of new molecules on the ABCB1 transporter.
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Affiliation(s)
- Camillo Rosano
- IRCCS SM-IST, U.O.S. Biopolimeri e Proteomica, Largo R. Benzi 10, 16132 Genova,
Italy
| | - Maurizio Viale
- IRCCS SM-IST, U.O.C. Terapia Immunologica, Largo R. Benzi 10, 16132 Genova,
Italy
| | - Barbara Cosimelli
- Dip. di Farmacia, Università degli Studi di Napoli “Federico II”, Via D. Montesano 49, 80131 Napoli, Italy
| | - Elda Severi
- Dip. di Farmacia, Università degli Studi di Napoli “Federico II”, Via D. Montesano 49, 80131 Napoli, Italy
| | - Rosaria Gangemi
- IRCCS SM-IST, U.O.C. Terapia Immunologica, Largo R. Benzi 10, 16132 Genova,
Italy
| | - Alessia Ciogli
- Dip. di Chimica e Tecnologie
del Farmaco, Sapienza Università di Roma, Piazzale A. Moro 5, 00185 Roma, Italy
| | - Daniela De Totero
- IRCCS SM-IST, U.O.C. Trasferimento Genico, Largo R. Benzi 10, 16132 Genova,
Italy
| | - Domenico Spinelli
- Dip. di Chimica “G.
Ciamician”, Università degli Studi di Bologna, Via F. Selmi
2, 40126 Bologna, Italy
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8
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Sirci F, Istyastono EP, Vischer HF, Kooistra AJ, Nijmeijer S, Kuijer M, Wijtmans M, Mannhold R, Leurs R, de Esch IJP, de Graaf C. Virtual Fragment Screening: Discovery of Histamine H3 Receptor Ligands Using Ligand-Based and Protein-Based Molecular Fingerprints. J Chem Inf Model 2012; 52:3308-24. [DOI: 10.1021/ci3004094] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Francesco Sirci
- Laboratory for Chemometrics
and Chemoinformatics, Chemistry Department, University of Perugia, Via Elce di Sotto, 10, I-06123 Perugia Italy
| | - Enade P. Istyastono
- Division of Medicinal Chemistry,
Faculty of Sciences, Amsterdam Institute for Molecules, Medicines
and Systems (AIMMS), VU University Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
- Molecular Modeling Division, Pharmaceutical
Technology Laboratory, Universitas Sanata Dharma, Yogyakarta, Indonesia
| | - Henry F. Vischer
- Division of Medicinal Chemistry,
Faculty of Sciences, Amsterdam Institute for Molecules, Medicines
and Systems (AIMMS), VU University Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Albert J. Kooistra
- Division of Medicinal Chemistry,
Faculty of Sciences, Amsterdam Institute for Molecules, Medicines
and Systems (AIMMS), VU University Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Saskia Nijmeijer
- Division of Medicinal Chemistry,
Faculty of Sciences, Amsterdam Institute for Molecules, Medicines
and Systems (AIMMS), VU University Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Martien Kuijer
- Division of Medicinal Chemistry,
Faculty of Sciences, Amsterdam Institute for Molecules, Medicines
and Systems (AIMMS), VU University Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Maikel Wijtmans
- Division of Medicinal Chemistry,
Faculty of Sciences, Amsterdam Institute for Molecules, Medicines
and Systems (AIMMS), VU University Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Raimund Mannhold
- Department of Laser Medicine,
Molecular Drug Research Group, Heinrich-Heine-Universität, Universitätsstrasse 1, D-40225 Düsseldorf, Germany
| | - Rob Leurs
- Division of Medicinal Chemistry,
Faculty of Sciences, Amsterdam Institute for Molecules, Medicines
and Systems (AIMMS), VU University Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Iwan J. P. de Esch
- Division of Medicinal Chemistry,
Faculty of Sciences, Amsterdam Institute for Molecules, Medicines
and Systems (AIMMS), VU University Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Chris de Graaf
- Division of Medicinal Chemistry,
Faculty of Sciences, Amsterdam Institute for Molecules, Medicines
and Systems (AIMMS), VU University Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
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