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Demirbaş Ü, Ömeroğlu İ, Akçay HT, Durmuş M, Kantekin H. Synthesis, characterization, photophysical and photochemical properties of peripherally tetra benzodioxane substituted metal-free phthalocyanine and its zinc(II) and magnesium(II) derivatives. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.128992] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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2
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Demirbaş Ü, Akyüz D, Akçay HT, Koca A, Kantekin H. Non-peripherally tetra substituted phthalocyanines bearing benzodioxane moieties: Synthesis, characterization and investigation of electrochemical and spectroelectrochemical properties. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.04.031] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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3
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Synthesis and antitumor activity of 1,2,4-triazoles having 1,4-benzodioxan fragment as a novel class of potent methionine aminopeptidase type II inhibitors. Bioorg Med Chem 2011; 19:5948-54. [DOI: 10.1016/j.bmc.2011.08.063] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2011] [Revised: 08/26/2011] [Accepted: 08/27/2011] [Indexed: 11/21/2022]
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4
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Jain KS, Bariwal JB, Kathiravan MK, Phoujdar MS, Sahne RS, Chauhan BS, Shah AK, Yadav MR. Recent advances in selective α1-adrenoreceptor antagonists as antihypertensive agents. Bioorg Med Chem 2008; 16:4759-800. [DOI: 10.1016/j.bmc.2008.02.091] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2008] [Revised: 02/27/2008] [Accepted: 02/27/2008] [Indexed: 11/29/2022]
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5
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Ude C, Schubert-Zsilavecz M. [The medicinal chemistry of alpha 1 blockers]. PHARMAZIE IN UNSERER ZEIT 2008; 37:284-288. [PMID: 18618627 DOI: 10.1002/pauz.200700270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Affiliation(s)
- Christian Ude
- Institut für Pharmazeutische Chemie, Zentrum für Arzneimittelforschung, Entwicklung und Sicherheit, Max-von-Laue-Str. 9, 60438 Frankfurt, Germany
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Pallavicini M, Budriesi R, Fumagalli L, Ioan P, Chiarini A, Bolchi C, Ugenti MP, Colleoni S, Gobbi M, Valoti E. WB4101-Related Compounds: New, Subtype-Selective α1-Adrenoreceptor Antagonists (or Inverse Agonists?). J Med Chem 2006; 49:7140-9. [PMID: 17125266 DOI: 10.1021/jm060358r] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Our previous structure-affinity relationship study had considered the enantiomers of the naphthodioxane, tetrahydronaphthodioxane, and 2-methoxy-1-naphthoxy analogues (compounds 1, 3, and 2, respectively) of 2-(2,6-dimethoxyphenoxyethylaminomethyl)-1,4-benzodioxane, the well-known alpha1-adrenoceptor (alpha1-AR) antagonist WB4101, showing that such modifications significantly modulate the affinity and selectivity profile for alpha1-AR subtypes and 5-HT1A receptor. Here, we extend investigations to antagonist activity enclosing new enantiomeric pairs, namely those of the methoxytetrahydronaphthoxy and methoxybiphenyloxy WB4101 analogues (4 and 5-7, respectively) and of a double-modified WB4101 derivative (8) resulting from hybridization between 2 and 3. We found that (S)-2 is a very potent (pA2 10.68) and moderately selective alpha1D-AR antagonist and the hybrid (S)-8 is a potent (pA2 7.98) and highly selective alpha1A-AR antagonist. Both of these compounds and (S)-WB4101 seem to act as inverse agonists in a vascular model. The results, which generally validate the logic we followed in designing these eight compounds, are acceptably rationalized by comparative SAR analysis of binding and functional affinities.
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Affiliation(s)
- Marco Pallavicini
- Istituto di Chimica Farmaceutica e Tossicologica, Università degli Studi di Milano, viale Abruzzi 42, I-20131 Milano, Italy
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7
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Minarini A, Bolognesi ML, Tumiatti V, Melchiorre C. Recent advances in the design and synthesis of prazosin derivatives. Expert Opin Drug Discov 2006; 1:395-407. [DOI: 10.1517/17460441.1.5.395] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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8
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MacDougall IJA, Griffith R. Selective pharmacophore design for α1-adrenoceptor subtypes. J Mol Graph Model 2006; 25:146-57. [PMID: 16406718 DOI: 10.1016/j.jmgm.2005.12.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2005] [Revised: 12/01/2005] [Accepted: 12/01/2005] [Indexed: 11/29/2022]
Abstract
Alpha1-adrenoceptors are G-protein coupled receptors found in a variety of vascular tissues and responsible for vasoconstriction. Selectivity for each of the three subtypes is an important consideration in drug design in order to minimise the possibility of side effects. Using Catalyst we developed ligand-based pharmacophores from alpha(1a,b,d)-selective antagonists available in the literature using three separate training sets. Four-feature pharmacophores were developed for the alpha(1a) and alpha(1b) subtype-selective antagonists and a five-feature pharmacophore was developed for the alpha(1d) subtype-selective antagonists. The alpha(1a) pharmacophore represents both class I and II compounds with good predictivity for other compounds outside the training set as well. The alpha(1b) pharmacophore best predicts the activity of prazosin analogues as these make up the majority of alpha(1b)-selective antagonists. Unexpectedly, no positive ionisable feature was incorporated in the alpha(1b) pharmacophore. The alpha(1d) pharmacophore was based primarily on one structural class of compounds, but has good predictivity for a heterogeneous test set. Preliminary docking studies using AutoDock and optimised alpha1-adrenoceptor homology models, conducted with the antagonists prazosin (32) and 66, showed good agreement with the findings from the pharmacophores.
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Affiliation(s)
- Iain J A MacDougall
- School of Environmental and Life Sciences, The University of Newcastle, Australia
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9
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Pallavicini M, Fumagalli L, Gobbi M, Bolchi C, Colleoni S, Moroni B, Pedretti A, Rusconi C, Vistoli G, Valoti E. QSAR study for a novel series of ortho disubstituted phenoxy analogues of α1-adrenoceptor antagonist WB4101. Eur J Med Chem 2006; 41:1025-40. [PMID: 16737760 DOI: 10.1016/j.ejmech.2006.04.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 04/06/2006] [Accepted: 04/14/2006] [Indexed: 10/24/2022]
Abstract
On the basis of the affinities at the alpha1a-, alpha1b- and alpha1d-adrenoceptors and the 5-HT1A receptor of a previous series of sixteen 2-[(2-phenoxyethyl)aminomethyl]-1,4-benzodioxanes ortho monosubstituted at the phenoxy moiety, a number of ortho disubstituted analogues were designed, synthesized in both the enantiomeric forms and tested in binding assays on the same receptors. The affinity values of the new compounds 1-11 were compared with those of the enantiomers of the 2,6-dimethoxyphenoxy analogue, the well-known alpha1 antagonist WB4101, and of the ortho monosubstituted derivatives, suggesting some distinctive aspects of the interaction of the phenoxy moiety, in particular with the alpha1a-AR and the 5-HT1A receptor, of the monosubstituted and the disubstituted compounds. A classical quantitative structure-activity relationship (Hansch) analysis was applied to the whole set of the S enantiomers of the ortho mono- and disubstituted WB4101 analogues (26 compounds), finding a very good correlation for the alpha1a affinity. For this latter, a significant parabolic relationship was also found with the volume of the two ortho substituents. Diametrically opposite, the same relationships for the 5-HT1A exhibit low or insignificant correlation coefficients.
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Affiliation(s)
- M Pallavicini
- Istituto di Chimica Farmaceutica e Tossicologica, Università di Milano, viale Abruzzi 42, I-20131 Milan, Italy
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10
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Ismail MAH, Aboul-Enein MNY, Abouzid KAM, Serya RAT. Ligand design and synthesis of new imidazo[5,1-b]quinazoline derivatives as α1-adrenoceptor agonists and antagonists. Bioorg Med Chem 2006; 14:898-910. [PMID: 16337797 DOI: 10.1016/j.bmc.2005.07.037] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2005] [Revised: 07/13/2005] [Accepted: 07/13/2005] [Indexed: 11/15/2022]
Abstract
A series of new imidazo[5,1-b]quinazoline derivatives (VII-IX) was designed, synthesized, and biologically evaluated for their in vivo hypotensive or hypertensive activities. The design of these compounds was based upon the molecular modeling simulation of the fitting values and conformational energy values of the best-fitted conformers to both the alpha(1)-adrenoceptor (alpha(1)-AR) agonist and alpha(1)-adrenoceptor (alpha(1)-AR) antagonist hypotheses. These hypotheses were generated from their corresponding lead compounds using CATALYST software. The simulation studies predicted that compounds IXa and IXe would have probable affinity for the alpha(1)-AR antagonist hypothesis, while compounds IXb, IXc, and IXg predicted a higher affinity for the alpha(1)-AR agonist hypothesis. In vivo biological evaluation of these compounds for their effects on the blood pressure of normotensive cats was consistent with the results of molecular modeling studies, where compounds IXa and IXe exhibited hypotensive activity, while compounds IXb, IXc, and IXg resulted in increasing the blood pressure of the experimental animals at different doses.
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Affiliation(s)
- Mohamed A H Ismail
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt.
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11
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Fumagalli L, Bolchi C, Colleoni S, Gobbi M, Moroni B, Pallavicini M, Pedretti A, Villa L, Vistoli G, Valoti E. QSAR study for a novel series of ortho monosubstituted phenoxy analogues of α1-adrenoceptor antagonist WB4101. Bioorg Med Chem 2005; 13:2547-59. [PMID: 15755656 DOI: 10.1016/j.bmc.2005.01.034] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2004] [Revised: 01/14/2005] [Accepted: 01/21/2005] [Indexed: 11/17/2022]
Abstract
A number of (S)- and (R)-2-[(2-phenoxyethyl)aminomethyl]-1,4-benzodioxanes unsubstituted or ortho monosubstituted at the phenoxy moiety were synthesized and tested in binding assays on the alpha(1a)-AR, alpha(1b)-AR, alpha(1d)-AR and the 5-HT(1A) receptor. The affinity values of the new compounds 1-16 were compared with those of the enantiomers of the 2,6-dimethoxyphenoxy analogue, the well-known alpha(1) antagonist WB4101, finding that the unsubstituted derivative (S)-1 and the o-methyl, the o-t-butyl, the o-fluoro and the o-methoxy derivatives, (S)-2, (S)-4, (S)-8 and (S)-16, respectively, display a significantly specific 5-HT(1A) affinity, very close, with the exception of (S)-4, to the almost nanomolar one of (S)-WB4101. Otherwise, sensible affinity decreases were recorded for the three alpha(1)-AR subtypes. A classical quantitative structure-activity relationship (Hansch) analysis was successfully applied to compounds (S)-1 to (S)-16 and (S)-WB4101 to rationalize such binding data.
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Affiliation(s)
- Laura Fumagalli
- Istituto di Chimica Farmaceutica e Tossicologica, Università di Milano, viale Abruzzi 42, I-20131 Milano, Italy
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12
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Rosini M, Antonello A, Cavalli A, Bolognesi ML, Minarini A, Marucci G, Poggesi E, Leonardi A, Melchiorre C. Prazosin-Related Compounds. Effect of Transforming the Piperazinylquinazoline Moiety into an Aminomethyltetrahydroacridine System on the Affinity for α1-Adrenoreceptors. J Med Chem 2003; 46:4895-903. [PMID: 14584940 DOI: 10.1021/jm030952q] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In a search for structurally new alpha(1)-adrenoreceptor (alpha(1)-AR) antagonists, prazosin (1)-related compounds 2-11 were synthesized and their affinity profiles were assessed by functional experiments in isolated rat vas deferens (alpha(1A)), spleen (alpha(1B)), and aorta (alpha(1D)) and by binding assays in CHO cells expressing human cloned alpha(1)-AR subtypes. Transformation of the piperazinylquinazoline moiety of 1 into an aminomethyltetrahydroacridine system afforded compound 2, endowed with reduced affinity, in particular for the alpha(1A)-AR subtype. Then, to investigate the optimal features of the tricyclic moiety, the aliphatic ring of 2 was modified by synthesizing the lower and higher homologues 3 and 4. An analysis of the pharmacological profile, together with a molecular modeling study, indicated the tetrahydroacridine moiety as the most promising skeleton for alpha(1)-antagonism. Compounds 5-8, where the replacement of the furoyl group of 2 with a benzoyl moiety afforded the possibility to evaluate the effect of the substituent trifluoromethyl on receptor binding, resulted, except for 7, in a rather surprising selectivity toward alpha(1B)-AR, in particular vs the alpha(1A) subtype. Also the insertion of the 2,6-dimethoxyphenoxyethyl function of WB 4101 on the tetrahydroacridine skeleton of 2, and/or the replacement of the aromatic amino function with a hydroxy group, affording derivatives 9-11, resulted in alpha(1B)-AR selectivity also vs the alpha(1D) subtype. On the basis of these results, the tetrahydroacridine moiety emerged as a promising tool for the characterization of the alpha(1)-AR, owing to the receptor subtype selectivity achieved by an appropriate modification of the lateral substituents.
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MESH Headings
- Acetylcholinesterase/chemistry
- Adrenergic alpha-Antagonists/chemical synthesis
- Adrenergic alpha-Antagonists/chemistry
- Adrenergic alpha-Antagonists/pharmacology
- Aminoacridines/chemical synthesis
- Aminoacridines/chemistry
- Aminoacridines/pharmacology
- Animals
- Aorta, Thoracic/drug effects
- Aorta, Thoracic/physiology
- CHO Cells
- Cholinesterase Inhibitors/chemical synthesis
- Cholinesterase Inhibitors/chemistry
- Cholinesterase Inhibitors/pharmacology
- Cricetinae
- Dioxanes/pharmacology
- Humans
- In Vitro Techniques
- Male
- Models, Molecular
- Molecular Conformation
- Muscle Contraction/drug effects
- Muscle, Smooth/drug effects
- Muscle, Smooth/physiology
- Piperazines/chemistry
- Prazosin/chemistry
- Prazosin/pharmacology
- Radioligand Assay
- Rats
- Rats, Wistar
- Receptors, Adrenergic, alpha-1/drug effects
- Receptors, Adrenergic, alpha-1/metabolism
- Spleen/drug effects
- Spleen/physiology
- Structure-Activity Relationship
- Vas Deferens/drug effects
- Vas Deferens/physiology
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Affiliation(s)
- Michela Rosini
- Department of Pharmaceutical Sciences, University of Bologna, Via Belmeloro 6, 40126 Bologna, Italy
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Thiéry V, Coudert G, Bizot-Espiard JG, Pfeiffer B, Renard P, Lindenbaum A, Guillaumet G. A novel series of 2,6,7-substituted 2,3-dihydro-1,4-benzodioxin and 2,6,7-substituted 1,4-benzodioxin derivatives as lipid peroxidation inhibitors. Structure-activity relationships for high inhibition of human low-density lipoprotein peroxidation. J Med Chem 2001; 44:3904-14. [PMID: 11689076 DOI: 10.1021/jm0108045] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A series of 6- or 7-substituted 2-carboxamido- or 2-(aminomethyl)-1,4-benzodioxin and -2,3-dihydro-1,4-benzodioxin derivatives were synthesized and evaluated to determine the necessary structural requirements for a high inhibition of human low-density lipoprotein copper-induced peroxidation. The most active compounds (21, 25, 28, 36, and 37) were found between 5 and >45 times more active than probucol itself. Due to both their potency and their structural features, compounds 25 and 36 were selected with others for complementary in vitro and in vivo investigations. Both of them exhibit calcium antagonist properties in the same range of potency as flunarizine itself. Compound 36 was also found to have significant hypolipaemic activity in mice at 100 and 300 mg/kg po, while compound 25 proved to be clearly active in a normobar hypoxia test.
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Affiliation(s)
- V Thiéry
- Institut de Chimie Organique et Analytique, UMR CNRS 6005, Université d'Orléans, B.P. 6759, F-45067 Orléans Cedex 2, France
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