101
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Rault S, Gehanne K, Lancelot JC, Lemaître S, El-Kashef H. Novel and Efficient Access to Thieno[3,4-c]cinnolines. HETEROCYCLES 2008. [DOI: 10.3987/com-08-11472] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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102
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Rault S, Primas N, Bouillon A, Lancelot JC, Santos J, Lohier JF. A New Methodology to Prepare 2-Halogenoimidazoles via a N-THP Protection. LETT ORG CHEM 2008. [DOI: 10.2174/157017808783330252] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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103
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Omran Z, Dallemagne P, Rault S. Synthesis of new bisaryl cyclopentathiophene and thienocyclopentoxazolidine derivatives as potential cytotoxic agents. J Enzyme Inhib Med Chem 2007; 22:632-7. [PMID: 18035831 DOI: 10.1080/14756360701485562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
The synthesis of new bisaryl thienocyclopentoxazolidine derivatives was achieved through a Suzuki cross-coupling procedure with the aim to enhance the previously reported cytotoxicity of the series. The biological activity, evaluated in the NCI's in vitro human disease-oriented tumor cell line screening panel, was however partially conserved by the pharmacomodulations.
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104
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Voisin-Chiret AS, Bazin MA, Lancelot JC, Rault S. Synthesis of new L-ascorbic ferulic acid hybrids. Molecules 2007; 12:2533-45. [PMID: 18065956 DOI: 10.3390/12112533] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2007] [Revised: 11/15/2007] [Accepted: 11/15/2007] [Indexed: 11/16/2022] Open
Abstract
A feasibility and chemical study of the coupling conditions of L-ascorbic acid with ferulic acid derivatives are described on the basis of the known synergistic effects of mixtures of various antioxidants. Novel L-ascorbic ferulic hybrids linked at the C-3 hydroxyl group were prepared with the aim to protect the alcohol function and the enediol system.
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105
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Verhaeghe P, Azas N, Gasquet M, Hutter S, Ducros C, Laget M, Rault S, Rathelot P, Vanelle P. Synthesis and antiplasmodial activity of new 4-aryl-2-trichloromethylquinazolines. Bioorg Med Chem Lett 2007; 18:396-401. [PMID: 17981462 DOI: 10.1016/j.bmcl.2007.10.027] [Citation(s) in RCA: 114] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2007] [Revised: 10/05/2007] [Accepted: 10/06/2007] [Indexed: 11/25/2022]
Abstract
A series of original 4-aryl-substituted 2-trichloromethylquinazoline derivatives was synthesized using a microwave-assisted Suzuki-Miyaura cross-coupling approach. Antiplasmodial activity was evaluated on both chloroquino-resistant and -sensitive Plasmodium falciparum strains, and the selectivity indexes for THP1 and HepG2 human cells were also calculated, revealing their antiplasmodial potential.
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106
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Sopková-de Oliveira Santos J, Verhaeghe P, Lohier JF, Rathelot P, Vanelle P, Rault S. Quinoline derivatives: potential antiparasitic and antiviral agents. Acta Crystallogr C 2007; 63:o643-5. [DOI: 10.1107/s0108270107046550] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2007] [Accepted: 09/21/2007] [Indexed: 11/10/2022] Open
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107
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Rault S, Cailly T, Lemaître S, Fabis F. Straightforward Access to Ethyl 3-Aminofuropyridine-2-carboxylates from 1-Chloro-2-cyano- or 1-Hydroxy-2-cyano-Substituted Pyridines. SYNTHESIS-STUTTGART 2007. [DOI: 10.1055/s-2007-990810] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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108
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Rault S, Anjar A, Keller E. [Thrombophlebitis of the right ovarian vein with thrombosis of the inferior vena cava in the post-partum]. ACTA ACUST UNITED AC 2007; 35:658-61. [PMID: 17581769 DOI: 10.1016/j.gyobfe.2006.12.029] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2006] [Accepted: 12/21/2006] [Indexed: 11/30/2022]
Abstract
A 31-year-old woman presented, in post-partum day two, an abdominal pain associated with fever. Appendicitis was suspected on clinical and radiological elements, and a laparoscopy carried out. This found a normal appendix but a right ovarian vein thrombophlebitis. A second injected scan confirmed the diagnosis, the right renal vein and the inferior vena cava being affected. We started an anticoagulation treatment associated with a large antibiotherapy. The patient was transferred to the intensive care unit to prevent the risk of pulmonary embolism.
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109
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Boulouard M, Schumann-Bard P, Butt-Gueulle S, Lohou E, Stiebing S, Collot V, Rault S. 4-Substituted indazoles as new inhibitors of neuronal nitric oxide synthase. Bioorg Med Chem Lett 2007; 17:3177-80. [PMID: 17395463 DOI: 10.1016/j.bmcl.2007.03.024] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2006] [Revised: 03/07/2007] [Accepted: 03/09/2007] [Indexed: 10/23/2022]
Abstract
A series of halo-1-H-indazoles has been synthesized and evaluated for its inhibitory activity on neuronal nitric oxide synthase. Introduction of bromine at the C4 position of the indazole ring system provided a compound almost as potent as the reference compound, that is, 7-nitroindazole (7-NI). The importance of position 4 is further demonstrated by the synthesis and pharmacological evaluation of the 4-nitroindazole which was also a potent inhibitor of NOS activity. These compounds also exhibited in vivo NOS inhibitory activity, as attested by potent antinociceptive effects following systemic administration.
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110
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Bazin MA, Kihel LE, Lancelot JC, Rault S. Original one-pot microwave-promoted Hunsdiecker–Suzuki strategy: straightforward access to trans-1,2-diarylethenes from cinnamic acids. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.04.114] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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111
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Gérard AL, Mahatsekake C, Collot V, Rault S. A facile synthetic route to new pyrazoloisoindolones. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.04.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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112
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Bazin MA, Travert C, Carreau S, Rault S, El Kihel L. First synthesis of 7α- and 7β-amino-DHEA, dehydroepiandrosterone (DHEA) analogues and preliminary evaluation of their cytotoxicity on Leydig cells and TM4 Sertoli cells. Bioorg Med Chem 2007; 15:3152-60. [PMID: 17350845 DOI: 10.1016/j.bmc.2007.02.036] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2006] [Revised: 02/13/2007] [Accepted: 02/20/2007] [Indexed: 11/16/2022]
Abstract
Efficient syntheses of new DHEA analogues, and their apoptotic and necrotic effects on Leydig cells and TM4 Sertoli cells are described. The key step in the synthetic strategy of 7-amino-DHEA derivatives involves a bromination on C-7 position to give an epimeric mixture of bromides which were substituted by azides and reduced to give 7alpha- and 7beta-amino-3beta-hydroxyandrost-5-en-17-ones. No cytotoxic effect induced by apoptosis mechanism was observed on Leydig and TM4 Sertoli cells by treatment with these amino-DHEA analogues. A necrotic effect was induced only in TM4 Sertoli cells. The best activity was obtained with 7alpha,beta-amino-androst-5-en-3beta-ol and 7beta-amino-3beta-hydroxy-androst-5-en-17-one.
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113
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Crestey F, Collot V, Stiebing S, Lohier JF, Santos JSDO, Rault S. New practical access to 2-azatryptophans and dehydro derivatives via the Wittig–Horner reaction. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.02.042] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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114
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Paillet-Loilier M, Fabis F, Lepailleur A, Bureau R, Butt-Gueulle S, Dauphin F, Lesnard A, Delarue C, Vaudry H, Rault S. Novel aminoethylbiphenyls as 5-HT7 receptor ligands. Bioorg Med Chem Lett 2007; 17:3018-22. [PMID: 17419056 DOI: 10.1016/j.bmcl.2007.03.054] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2007] [Revised: 03/16/2007] [Accepted: 03/19/2007] [Indexed: 01/31/2023]
Abstract
The synthesis of a series of aminoethylbiphenyls as novel 5-HT(7) receptor ligands is described. The novel derivatives exhibit high affinity for the 5-HT(7) receptor with selectivity toward 5-HT(1A) receptor.
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115
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Lescot E, Sopkova-de Oliveira Santos J, Dubessy C, Oulyadi H, Lesnard A, Vaudry H, Bureau R, Rault S. Definition of New Pharmacophores for Nonpeptide Antagonists of Human Urotensin-II. Comparison with the 3D-structure of Human Urotensin-II and URP. J Chem Inf Model 2007; 47:602-12. [PMID: 17381176 DOI: 10.1021/ci6003948] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Starting from nonpeptide agonists and antagonists of human urotensin-II (hU-II), several pharmacophores were designed and compared to the structure of hU-II. NMR and dynamic studies were realized on hU-II and urotensin-II-related peptide to check the conformation flexibilities of these peptides and the relationships between their potential 3D structures and the pharmacophores. In parallel, a virtual screening was carried out, leading to the discovery of six new derivatives with micromolar affinities. This last result shows the interest of these pharmacophores for the discovery of new ligands.
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116
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Cailly T, Fabis F, Legay R, Oulyadi H, Rault S. The synthesis of three new heterocycles: the pyrido[4,3 or 3,4 or 2,3-c]-1,5-naphthyridines. Tetrahedron 2007. [DOI: 10.1016/j.tet.2006.10.046] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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117
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Rault S, Caruso A, Sophie Voisin-Chiret A, Lancelot JC, Stefania Sinicropi M, Garofalo A. Novel and Efficient Synthesis of 5,8-Dimethyl-9H-carbazol-3-ol via a Hydroxydeboronation Reaction. HETEROCYCLES 2007. [DOI: 10.3987/com-07-11113] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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118
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Crestey F, Stiebing S, Legay R, Collot V, Rault S. Design and synthesis of a new indazole library: direct conversion of N-methoxy-N-methylamides (Weinreb amides) to 3-keto and 3-formylindazoles. Tetrahedron 2007. [DOI: 10.1016/j.tet.2006.10.063] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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119
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Verhaeghe P, Rathelot P, Rault S, Vanelle P. Convenient Preparation of Original Vinylic Chlorides with Antiparasitic Potential in Quinoline Series. LETT ORG CHEM 2006. [DOI: 10.2174/157017806779467997] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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120
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López-Atalaya J, Roussel B, Levrat D, Nicole O, Benchenane K, Rault S, Vaudry H, Petersen K, Ali C, Vivien D. ID: 96 Molecular requirements for modulation of NMDA receptor signaling by tissue-type plasminogen activator. J Thromb Haemost 2006. [DOI: 10.1111/j.1538-7836.2006.00096.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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121
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Collot V, Crestey F, Stiebing S, Rault S. Synthesis of New Dehydro 2-Azatryptophans and Derivatives via Heck Cross-Coupling Reactions of 3-Iodoindazoles with Methyl 2-(Acetylamino)acrylate. SYNTHESIS-STUTTGART 2006. [DOI: 10.1055/s-2006-950242] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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122
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Rochais C, Lisowski V, Dallemagne P, Rault S. Synthesis and biological evaluation of novel pyrrolopyrrolizinones as anticancer agents. Bioorg Med Chem 2006; 14:8162-75. [PMID: 17011196 DOI: 10.1016/j.bmc.2006.09.022] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2006] [Revised: 08/25/2006] [Accepted: 09/13/2006] [Indexed: 11/16/2022]
Abstract
We herein describe the synthesis of novel 3-(het)aryl-pyrrolo[2,3-b]pyrrolizin-8(1H)-ones starting from commercial (het)aryl-acetonitriles. A more convergent route was also described through the first synthesis of ethyl 3-amino-4-bromo-1H-pyrrole-2-carboxylate 17. The antiproliferative activities of these compounds were tested toward various cell lines and one of them 10k shows interesting cytotoxic properties, although it was less potent than our lead compound in thiophene series 1k.
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123
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Bazin MA, Loiseau PM, Bories C, Letourneux Y, Rault S, El Kihel L. Synthesis of oxysterols and nitrogenous sterols with antileishmanial and trypanocidal activities. Eur J Med Chem 2006; 41:1109-16. [PMID: 16949702 DOI: 10.1016/j.ejmech.2006.03.033] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 03/21/2006] [Accepted: 03/23/2006] [Indexed: 11/16/2022]
Abstract
Two sterol families have been synthesized: the first one is nitrogenous sterols containing amino, N-hydroxyimino or cyano group and the second one is oxysterols such as ketosterol and hydroxysterols. These compounds were then evaluated in vitro against Leishmania donovani promastigotes and Trypanosoma brucei brucei trypomastigotes. The most active compounds against L. donovani promastigotes were 7beta-aminomethylcholesterol and 7alpha,beta-aminocholesterol (IC50 in a range from 1 to 3 microM, pentamidine: 2.8 microM). These compounds were active on intramacrophage amastigotes with IC50 of 1.3 microM. Such an activity justifies further in vivo antileishmanial evaluation. Against T. b. brucei, (24R,S)-24-hydroxy-24-methylcholesterol (MEC, 12.5 microM) was the most active compound from these series.
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124
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Malzert-Fréon A, Vrignaud S, Saulnier P, Lisowski V, Benoît JP, Rault S. Formulation of sustained release nanoparticles loaded with a tripentone, a new anticancer agent. Int J Pharm 2006; 320:157-64. [PMID: 16723200 DOI: 10.1016/j.ijpharm.2006.04.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2006] [Revised: 04/04/2006] [Accepted: 04/13/2006] [Indexed: 11/23/2022]
Abstract
The purpose of the present work is to develop nanoparticles of a new antitubulin agent of the family of tripentones by means of a phase inversion process. Dynamic light scattering, transmission electron microscopy and zeta-potential measurements were used to characterize tripentone loaded nanoparticles. From interfacial tension measurements and from the study of the rheological interfacial properties of the tripentone at the Labrafac-Solutol interface, the fraction of tripentone initially present in Labrafac would stay in the oily core of nanocapsules. Moreover, the interpenetration of some tripentone molecules within the surfactant units helps to the stabilization of the formulated nanoparticles. The encapsulation efficiency was determined by high performance liquid chromatography (HPLC) and was found to be above 95%. In vitro release studies were carried out in blank nanoparticles containing phosphate buffer, pH 7.4, at 37 degrees C. The drug release kinetics was measured by HPLC. Antiproliferative activity studies on L1210 cells showed that the cytotoxic activity of tripentone was totally recovered after encapsulation of the antitubulin agent in lipid nanoparticles. This study shows that lipid nanocapsules could be a promising and effective carrier for tripentone delivery in the treatment of cancers.
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125
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126
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Gérard AL, Bouillon A, Mahatsekake C, Collot V, Rault S. Efficient and simple synthesis of 3-aryl-1H-pyrazoles. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.04.125] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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127
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Voisin AS, Bouillon A, Lancelot JC, Lesnard A, Rault S. Synthesis of novel halo-oxybispyridines, new building blocks in cholinergic medicinal chemistry. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.04.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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128
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Lepailleur A, Bureau R, Paillet-Loilier M, Fabis F, Saettel N, Lemaître S, Dauphin F, Lesnard A, Lancelot JC, Rault S. Molecular modeling studies focused on 5-HT7 versus 5-HT1A selectivity. Discovery of novel phenylpyrrole derivatives with high affinity for 5-HT7 receptors. J Chem Inf Model 2006; 45:1075-81. [PMID: 16045303 DOI: 10.1021/ci050045p] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The present study discusses the well-known 5-HT7/5-HT1A selectivity issue through a new series of phenylpyrrole derivatives. The first hits emerged from a virtual screening performed on a chemolibrary. Further study led to an optimization of a preliminary 5-HT7 pharmacophore model. The importance of each pharmacophoric feature is confirmed, but these characteristics have to be coupled to geometric constraints in order to achieve a 5-HT7 selectivity. Indeed, 5-HT1A affinity probably arises from extended conformations, whereas a bent one appears to be best suited for 5-HT7 selectivity.
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129
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Halm MP, Rortais A, Arnold G, Taséi JN, Rault S. New risk assessment approach for systemic insecticides: the case of honey bees and imidacloprid (Gaucho). ENVIRONMENTAL SCIENCE & TECHNOLOGY 2006; 40:2448-54. [PMID: 16646488 DOI: 10.1021/es051392i] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
The procedure to assess the risk posed by systemic insecticides to honey bees follows the European Directives and depends on the determination of the Hazard Quotient (HQ), though this parameter is not adapted to these molecules. This paper describes a new approach to assess more specifically the risk posed by systemic insecticides to honey bees with the example of imidacloprid (Gaucho). This approach is based on the new and existing chemical substances Directive in which levels of exposure (PEC, Predicted Exposure Concentration) and toxicity (PNEC, Predicted No Effect Concentration) are compared. PECs are determined for different categories of honey bees in relation to the amounts of contaminated pollen and nectar they might consume. PNECs are calculated from data on acute, chronic, and sublethal toxicities of imidacloprid to honey bees, to which selected assessment factors are applied. Results highlight a risk for all categories of honey bees, in particular for hive bees. These data are discussed in the light of field observations made on honey bee mortalities and disappearances. New perspectives are given to better determine the risk posed by systemic insecticides to honey bees.
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130
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Voisin AS, Bouillon A, Lancelot JC, Lesnard A, Oulyadi H, Rault S. Unusual behaviour of pyridinylboronic acids in the Petasis boronic Mannich reaction. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.01.115] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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131
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Le Foulon FX, Braud E, Fabis F, Lancelot JC, Rault S. Solution-phase parallel synthesis of a 1140-member ureidothiophene carboxylic acid library. ACTA ACUST UNITED AC 2006; 7:253-7. [PMID: 15762753 DOI: 10.1021/cc0498884] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A 1140-library of thiophene ureidoacids was synthesized by the reaction of a set of 60 primary or secondary amines with a number of 19 thieno[3,2-d]- or thieno[2,3-d][1,3]oxazine-2,4-diones. All compounds were obtained by a simple solution-phase combinatorial strategy on a 200-400-mg scale with over 70% yields and purities over 80%. Sixty library members chosen at random were successfully characterized by standard 1H NMR, HPLC/MS, and IR studies. Analgesic, antalgic, and antiinflammatory potential were investigated. The 1140-member ureidothiophene carboxylic acid library will be used in high-throughput screening assays.
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132
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Rault S, Pirrello O, Langer B, Nisand I. [Amniotic fluid embolism: two case reports]. ACTA ACUST UNITED AC 2006; 34:127-30. [PMID: 16458036 DOI: 10.1016/j.gyobfe.2005.10.029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2005] [Accepted: 10/17/2005] [Indexed: 11/26/2022]
Abstract
We report two cases of amniotic fluid embolism, confirmed by histological examination. Both patients had an immediate post-partum haemorrhage that required an haemostatic hysterectomy. A typical symptomatology of amniotic fluid embolism revelated the first case. The patient survived without any sequelae. In the second case, amniotic fluid embolism occurred immediately after the delivery. The patient developed an acute respiratory distress with a shock syndrome. Despite haemostatic hysterectomy and resuscitative efforts, she died 6 days later.
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133
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Leflemme N, Freret T, Boulouard M, Dallemagne P, Rault S. Synthesis and preliminary in vivo evaluation of new 2-Aryl-6-methyl-1,2-dihydro-1H-pyridin-4-ones and 2-Aryl-6-methylpiperidin-4-ols, as potential anti-amnesiant agents. J Enzyme Inhib Med Chem 2006; 20:551-6. [PMID: 16408790 DOI: 10.1080/14756360500212266] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
A revisited synthesis of 2-aryl-6-methyl-1,2-dihydro-1H-pyridin-4-ones and their saturated analogues 2-aryl-6-methylpiperidin-4-ols is described. A five steps procedure, using the sulfinimine chemistry, to prepare a key intermediate beta-(6-chloronicotinic)-beta-amino ester is also reported. In vivo spontaneous working memory activity of these compounds has been investigated in the mouse. Results obtained with 2-(3-chlorophenyl)-6-methyl-1,2-dihydro-1H-pyridin-4-one 9b, the most effective derivative in this model, have been reported.
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134
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Rault S, Cailly T, Fabis F, Bouillon A, Lemaître S, Sopkova J, de Santos O. Synthesis of ortho-Cyanopyridylboronic Acids and Esters toward Cyano-Functionalized Bipyridines. Synlett 2006. [DOI: 10.1055/s-2005-922772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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135
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Rochais C, Dallemagne P, Rault S, Sopkovà-de Oliveira Santos J. Synthesis of Novel Pyrazolopyrrolizinones as Prospective Anticancer Agents. HETEROCYCLES 2006. [DOI: 10.3987/com-06-10824] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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136
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Paillet-Loilier M, Fabis F, Lepailleur A, Bureau R, Butt-Gueulle S, Dauphin F, Delarue C, Vaudry H, Rault S. Phenylpyrroles, a new chemolibrary virtual screening class of 5-HT7 receptor ligands. Bioorg Med Chem Lett 2005; 15:3753-7. [PMID: 16002287 DOI: 10.1016/j.bmcl.2005.05.059] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2005] [Revised: 05/16/2005] [Accepted: 05/17/2005] [Indexed: 11/18/2022]
Abstract
Virtual screening studies have identified a series of phenylpyrroles as novel 5-HT7 receptor ligands. The synthesis and the affinity for the 5-HT7 receptor of these phenylpyrroles are described. Some of these compounds exhibited high affinity for the 5-HT7 receptors.
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137
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Omran Z, Cailly T, Lescot E, Santos JSDO, Agondanou JH, Lisowski V, Fabis F, Godard AM, Stiebing S, Le Flem G, Boulouard M, Dauphin F, Dallemagne P, Rault S. Synthesis and biological evaluation as AChE inhibitors of new indanones and thiaindanones related to donepezil. Eur J Med Chem 2005; 40:1222-45. [PMID: 16137794 DOI: 10.1016/j.ejmech.2005.07.009] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2005] [Revised: 06/17/2005] [Accepted: 07/01/2005] [Indexed: 11/20/2022]
Abstract
Sixty-four new indanones and thiaindanones related to donepezil were synthesized and evaluated in vitro as potential AChE inhibitors. Among them, 11 derivatives were found to inhibit the enzyme in the submicromolar range; the best compound revealed its inhibitory activity with an IC50 in the same range (0.06 microM) than the reference compound, donepezil (IC50=0.02 microM).
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138
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Andreu I, Cabedo N, Fabis F, Cortes D, Rault S. Synthesis of new 8-arylisoquinoline derivatives by application of palladium-catalyzed Suzuki cross-coupling reactions. Tetrahedron 2005. [DOI: 10.1016/j.tet.2005.06.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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139
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Gérard AL, Lisowski V, Rault S. Direct synthesis of new arylanthranilic acids via a Suzuki cross-coupling reaction from iodoisatins. Tetrahedron 2005. [DOI: 10.1016/j.tet.2005.04.022] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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140
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Lescot E, Bureau R, Sopkova-de Oliveira Santos J, Rochais C, Lisowski V, Lancelot JC, Rault S. 3D-QSAR and Docking Studies of Selective GSK-3β Inhibitors. Comparison with a Thieno[2,3-b]pyrrolizinone Derivative, a New Potential Lead for GSK-3β Ligands. J Chem Inf Model 2005; 45:708-15. [PMID: 15921460 DOI: 10.1021/ci050008y] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The three-dimensional structures of 3-anilino-4-arylmaleimides, selective GSK-3beta inhibitors, were correlated to their biological affinities by 3D-QSAR studies (CoMFA method). The cocrystallographic data of GSK-3beta vs 3-anilino-4-arylmaleimide allowed us to compare 3D-QSAR results to experimental intermolecular interactions. The results of the CoMFA analysis did not really correspond to the interactions recorded in the active site, but they characterized fundamental features (areas of the active site) of the interactions ligand-receptor. These studies were the starting point to analyze a new GSK-3beta ligand, a thieno[2,3-b]pyrrolizinone derivative. This comparison based on docking and simulation approaches allowed us to confirm one preferential orientation of this ligand inside the active site, explaining the relationship with the reference 3-anilino-4-arylmaleimide derivatives and its biological affinity.
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141
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Lepailleur A, Bureau R, Lemaître S, Dauphin F, Lancelot JC, Contesse V, Lenglet S, Delarue C, Vaudry H, Rault S. Molecular design based on 3D pharmacophores. Applications to 5-HT7 receptors. ACTA ACUST UNITED AC 2005; 44:1148-52. [PMID: 15154784 DOI: 10.1021/ci030036l] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A definition of a pharmacophore for the 5-HT7 antagonists was carried out by searching the common chemical features of selective antagonists from the literature. A molecular design is described by analyzing the differences between this new pharmacophore and three other 3D serotonin pharmacophores previously described. This comparison led to the synthesis of a new series of potent 5-HT7 antagonists.
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142
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Witulski B, Rault S, Azcon J, Alayrac C, Arnautu A, Collot V. Sequential Sonogashira and Suzuki Cross-Coupling Reactions in the Indole and Indazole Series. SYNTHESIS-STUTTGART 2005. [DOI: 10.1055/s-2005-861825] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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143
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Voisin AS, Bouillon A, Lancelot JC, Rault S. Efficient synthesis of halohydroxypyridines by hydroxydeboronation. Tetrahedron 2005. [DOI: 10.1016/j.tet.2004.12.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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144
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Cailly T, Fabis F, Lemaître S, Bouillon A, Rault S. Synthesis of ortho-substituted cyanopyridines through lithio intermediate trapping. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2004.11.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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145
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Renault J, Bernard A, Brajeul S, Verhaeghe P, Butt S, Fabis F, Dauphin F, Uriac P, Rault S. Pharmacomodulation of a sulfamide 5-HT6 receptor ligand. J Enzyme Inhib Med Chem 2004; 19:577-83. [PMID: 15662961 DOI: 10.1080/14756360400004540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
A series of N-omega-aminoalkyl- or N-omega-amidinoalkyl-2,4,6-triisopropyl benzenesulfonamides has been synthesized and their respective affinity indices on 5-HT6 receptor determined. This evaluation clearly showed that the compounds possessing an arylpiperazine moiety or an amidine function exhibited good affinity for the model.
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146
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Sopková-de Oliveira Santos J, Bouillon A, Lancelot JC, Rault S. 2-(6-Bromopyridin-2-yl)-6-methyl-[1,3,6,2]dioxazaborocane, a new stable (pyridin-2-yl)boronic acid derivative. Acta Crystallogr C 2004; 60:o582-4. [PMID: 15295193 DOI: 10.1107/s0108270104014520] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2004] [Accepted: 06/15/2004] [Indexed: 11/10/2022] Open
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147
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Tuynman A, Pérollier C, Frapart Y, Schumann-Bard P, Collot V, Rault S, Boucher JL. Inhibitory effects and spectral interactions of isomeric methoxyindazoles on recombinant nitric oxide synthases. Nitric Oxide 2004; 9:86-94. [PMID: 14623174 DOI: 10.1016/j.niox.2003.09.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
A series of isomeric methoxyindazoles has been evaluated as inhibitors of purified recombinant neuronal, inducible, and endothelial nitric oxide synthases (NOS). 7-Methoxyindazole (7-MI) was the most active compound of this series and displayed selectivity toward the constitutive neuronal (NOS I) and endothelial (NOS III) NOS isoforms, the inducible NOS II being almost insensitive to this inhibitor. 6-, 5-, and 4-Methoxyindazoles were almost inactive against all three NOS isoforms. Inhibition of NO and citrulline formation catalyzed by neuronal NOS in the presence of 7-MI appeared to be competitive versus both substrate L-arginine (L-arg) and (6R)-5,6,7,8-tetrahydrobiopterin (BH(4)) cofactor. 7-MI only slightly inhibited NADPH oxidase activity and was inactive against the cytochrome c (cyt c) reductase activity of neuronal NOS at concentrations up to 100-fold higher than its IC(50) value for inhibition of citrulline formation. UV/Vis and EPR studies indicated that 7-MI interacts with the oxygenase domain of neuronal NOS (NOS I(oxy)) in an identical manner but with a much lower affinity than 7-nitroindazole (7-NI). These results demonstrate that an indazole derivative bearing an electron-rich substituent in the 7-position is also a NOS I inhibitor and that such a compound presents strong similarities with the mechanism of inhibition of 7-NI.
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148
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Lisowski V, Léonce S, Kraus-Berthier L, Sopková-de Oliveira Santos J, Pierré A, Atassi G, Caignard DH, Renard P, Rault S. Design, synthesis, and evaluation of novel thienopyrrolizinones as antitubulin agents. J Med Chem 2004; 47:1448-64. [PMID: 14998333 DOI: 10.1021/jm030961z] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein, we describe the structure-activity relationship study of a new 3-aryl-8H-thieno[2,3-b]pyrrolizin-8-one series of antitubulin agents. The pharmacological results from the National Cancer Institute in vitro human disease oriented tumor cell line screening allowed us to identify compound 1d (NSC 676693) as a very efficient antitumoral drug in all cancer cell lines tested. This prompted us to define the structural requirements essential for this antiproliferative activity. Among all analogues synthesized in this study, compound 1o was the most promising, being 10-fold more potent than compound 1d. Its activity over a panel of nine tumoral cell lines was in the nanomolar range for all of the histological types tested, and surprisingly, the resistant KB-A1 cell line was also sensitive to this compound. Moreover, a flow cytometric study showed that L1210 cells treated by the most potent compounds were arrested in the G(2)/M phases of the cell cycle with a significant percentage of cells having reinitiated a cycle of DNA synthesis without cell division. This interesting pharmacological profile, resulting from inhibition of tubulin polymerization, encouraged us to perform preliminary in vivo studies that led to a new prodrug chemical approach.
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149
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Rochais C, Lisowski V, Dallemagne P, Rault S. First synthesis of methyl 3-amino-4-(het)aryl-1H-pyrrole-2-carboxylates as useful scaffolds in medicinal chemistry. Tetrahedron 2004. [DOI: 10.1016/j.tet.2004.01.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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150
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Leflemme N, Dallemagne P, Rault S. A convenient synthesis of dihydro- and tetrahydro-1,3-thiazine derivatives from β-aryl-β-amino acids. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2003.12.027] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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