- AZOLE HETEROCYCLIC COMPOUND, PREPARATION METHOD, PHARMACEUTICAL COMPOSITION AND USE
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The present invention relates to the filed of pharmarcutical chemistry, and in particular, to a novel class of azole compounds represented by general formula (I), (II) or (III) amd a preparation method thereof, a pharmarcutical composition with the compounds as active components, and a use of the azole compounds and the pharmarcutical composition in the preparation of a medicament for treatment of diseases associated with Lp-PLA2 enzyme activities, wherein each substituent is as deinfed in the specifictaion.
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- AZOLE HETEROCYCLIC COMPOUND, PREPARATION METHOD, PHARMACEUTICAL COMPOSITION AND USE
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The present invention relates to the field of pharmaceutical chemistry, and in particular, to a novel class of azole compounds represented by general formula (I), (II) or (III) and a preparation method thereof, a pharmaceutical composition with the compounds as active components, and a use of the azole compounds and the pharmaceutical composition in the preparation of a medicament for treatment of diseases associated with Lp-PLA2 enzyme activities, wherein each substituent is as defined in the specification.
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- Structurally simple inhibitors of lanosterol 14α-demethylase are efficacious in a rodent model of acute Chagas disease
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We report structure-activity studies of a large number of dialkyl imidazoles as inhibitors of Trypanosoma cruzi lanosterol-14α-demethylase (L14DM). The compounds have a simple structure compared to posaconazole, another L14DM inhibitor that is an anti-Chagas drug candidate. Several compounds display potency for killing T. cruzi amastigotes in vitro with values of EC 50 in the 0.4-10 nM range. Two compounds were selected for efficacy studies in a mouse model of acute Chagas disease. At oral doses of 20-50 mg/kg given after establishment of parasite infection, the compounds reduced parasitemia in the blood to undetectable levels, and analysis of remaining parasites by PCR revealed a lack of parasites in the majority of animals. These dialkyl imidazoles are substantially less expensive to produce than posaconazole and are appropriate for further development toward an anti-Chagas disease clinical candidate.
- Suryadevara, Praveen Kumar,Olepu, Srinivas,Lockman, Jeffrey W.,Ohkanda, Junko,Karimi, Mandana,Verlinde, Christophe L. M. J.,Kraus, James M.,Schoepe, Jan,Van Voorhis, Wesley C.,Hamilton, Andrew D.,Buckner, Frederick S.,Gelb, Michael H.
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experimental part
p. 3703 - 3715
(2010/04/24)
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- Regiochemistry of N-substitution of some 4(5)-substituted imidazoles under solvent-free conditions
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(Chemical Equation Presented) Imidazole-4(5)-carboxaldehyde and 4(5)-cyanoimidazole were N-benzylated and N-methylated using benzyl chloride and methyl iodide on zinc oxide (ZnO), alumina, and KF/alumina under basic conditions without solvent. Triethylamine (Et3N) or potassium carbonate was added as base in the reactions on ZnO and alumina. Imidazole-4(5)-carboxaldehyde was also benzylated on silica and carbon nanotubes. The effect of bases and solids on the product distribution of 1,4- and 1,5-substituted compounds was investigated. In some cases, the product ratios were different for imidazole-4(5)-carboxaldehyde and 4(5)-cyanoimidazole. In the reactions on KF/alumina the 1,4-product was favored for both compounds. The combination of Et3N and ZnO favored the 1,5-product, however for the nitrile effect was not so pronounced. When N-benzylation and methylation of the aldehyde were performed in the presence of catalytic amount of zinc chloride with Et3N as base, the product distributions were the same as in the reactions on ZnO. Nitrile gave different product ratios on ZnO and in the presence of ZnCl2. In addition, a mixture of N-benzylimidazole and 1,3-dibenzylimidazolium was produced when imidazole was benzylated on KF/alumina. Only the latter product was afforded when two equivalents of benzyl chloride were used.
- Oresmaa, Larisa,Taberman, Helena,Haukka, Matti,Vainiotalo, Pirjo,Aulaskari, Paula
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p. 1445 - 1451
(2008/09/18)
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- Regioselective alkylation of 2-alkyl-5,6,7,8-tetrahydro-3H- cycloheptimidazol-4-ones and 2-alkyl-3H-cycloheptimidazol-4-ones
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Regioselective alkylation of 2-alkyl-5,6,7,8-tetrahydro-3H- cycloheptimidazol-4-one (1) and 2-alkyl-3H-cycloheptimidazol-4-one (2) was investigated. 3-[2′-(1-tert-Butyl-1H-tetrazol-5-yl)biphenyl-4-ylmethyl]-2- propyl-5,6,7,8-tetrahydro-1H-cycloheptimidazol-4-one (6) was preferentially obtained under the conditions by using NaH in DMF or THF. On the other hand, 3-[2′-(1-tert-butyl-1H-tetrazol-5-yl)biphenyl-4-ylmethyl]-2-propyl-5,6,7, 8-tetrahydro-3H-cycloheptimidazol-4-one (5), the synthetic intermediate compound of Pratosartan, was obtained selectively in the presence of n-Bu4NBr in toluene by using aqueous sodium hydroxide as a base. In this reaction, it was found that the concentration of the alkaline solution influences its regioselectivity. This selectivity was observed even for aldehyde and ester derivatives.
- Sonegawa, Motoharu,Yokota, Masayuki,Tomiyama, Hiroshi,Tomiyama, Tsuyoshi
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p. 706 - 710
(2007/10/03)
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- Structure-based design of imidazole-containing peptidomimetic inhibitors of protein farnesyltransferase
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A series of imidazole-containing peptidomimetic PFTase inhibitors and their co-crystal structures bound to PFTase and FPP are reported. The structures reveal that the peptidomimetics adopt a similar conformation to that of the extended CVIM tetrapeptide,
- Ohkanda, Junko,Strickland, Corey L.,Blaskovich, Michelle A.,Carrico, Dora,Lockman, Jeffrey W.,Vogt, Andreas,Bucher, Cynthia J.,Sun, Jiazhi,Qian, Yimin,Knowles, David,Pusateri, Erin E.,Sebti, Said M.,Hamilton, Andrew D.
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p. 482 - 492
(2008/02/04)
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- Novel N-(4-piperidinyl)benzamide antimalarials with mammalian protein farnesyltransferase inhibitory activity
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Protein farnesyltransferase of Plasmodium falciparum is a potential target in the treatment of malaria for which increased drug resistance is observed. The design, synthesis and evaluation of a series of N-(4-piperidinyl)benzamides is reported. The most potent compounds showed in vitro activity against the parasite at submicromolar concentrations.
- Ryckebusch, Adina,Gilleron, Pauline,Millet, Regis,Houssin, Raymond,Lemoine, Amelie,Pommery, Nicole,Grellier, Philippe,Sergheraert, Christian,Henichart, Jean-Pierre
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p. 1324 - 1326
(2007/10/03)
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- Novel benzothienyl or indole derivatives, preparation and use thereof as inhibitors of prenyl transferase proteins
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The invention concerns compounds of general formula (1), wherein, in particular; W represents H, SO2R5. CO(CH2)nR5, (CH2)nR6, CS(CH2)nR5; X represents S or NH; Y represents (CH2)p, CO, (CH2)pCO, CH═CH—CO; Z represents a hetcrocycle, imidazole, benzimidazole, isoxazole, tetrazole, oxadiazole, thiadazole, pyridine, quinazoline, quinoxaline, quinoline, thiophene; R1 represents COOR6, CONR6R7, CO—NH—CH(R6)—COOR7, CH2NR6R7, CH2OR6, (CH2)pR6, CH═CHR6; R2 represents in particular hydrogen, C1-C10 alkyl, a substituted or unsubstituted phenyl; R5 and R6 represents hydrogen, C1—C6 alkyl; R5 represents a substituted or unsubstituted phenyl or naphthyl; R6 and R7, identical or different, represent hydrogen, C1—C15 alkyl, a hetcrocycle. an aryl; n represents 0 to 10; p represents 1 to 6.
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Page 31-32; 47-48
(2010/02/08)
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- Potent and selective farnesyl transferase inhibitors
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We recently described a novel series of CA1A2X peptidomimetics as farnesyl transferase inhibitors (FTIs). These compounds possess an N-(4-piperidinyl)benzamide scaffold mimicking A1A 2 residue. Extensive exploration of structure-activity relationships revealed that replacement of cysteine by substituted benzylimidazoles provided nanomolar FTIs with in vitro activities (18e, IC50 = 4.60 nM on isolated enzyme, EC50 = 20.0 nM for growth inhibition on a tumor cell line). The molecular docking of 18e and 19e in the active site of the enzyme provided details of key interactions with the protein and showed that the methionine or phenylalanine residue fits into the aryl binding site.
- Millet, Régis,Domarkas, Juozas,Houssin, Raymond,Gilleron, Pauline,Goossens, Jean-Fran?ois,Chavatte, Philippe,Logé, Cédric,Pommery, Nicole,Pommery, Jean,Hénichart, Jean-Pierre
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p. 6812 - 6820
(2007/10/03)
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- Parallel liquid synthesis of N,N′-disubstituted 3-amino azepin-2-ones as potent and specific farnesyl transferase inhibitors
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A rapid structure-activity study was performed by parallel liquid synthesis on N,N′-disubstitution of 3-amino azepin-2-one to afford potent and specific farnesyl transferase inhibitors with low nM enzymatic and cellular activities. The activities of the selected compounds were validated in vivo, and compounds 41a and 44a presented significant antitumour activity.
- Le Diguarher, Thierry,Ortuno, Jean-Claude,Dorey, Gilbert,Shanks, David,Guilbaud, Nicolas,Pierre, Alain,Fauchere, Jean-Luc,Hickman, John A.,Tucker, Gordon C.,Casara, Patrick J.
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p. 3193 - 3204
(2007/10/03)
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- Preparation and structure determination of 1-benzyl-, 1-methyl- and 1H-5-[(2-nitro-2-phenyl)ethenyl]imidazoles
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1-R-5-[(2-Nitro-2-phenyl)ethenyl]imidazoles (R = Bn, Me, H) 6a,b,c were synthesized by the Knoevenagel reaction of the corresponding aldehydes 4a,b,c with phenylnitromethane 5. The E-isomers 6a,b,c were precipitated from the reaction mixture as crystalline compounds in 89, 81 and 60% yields, respectively. Traces of the Z-isomers 6a'b',c' were found in the reaction mixtures but could be obtained in a ratio of 4:3 from the E-form with UV irradiation. The E-forms were more stable and the Z-isomers changed again to the E-isomers in several weeks.
- Aulaskari, Paula,Ahlgren, Markku,Rouvinen, Juha,Vainiotalo, Pirjo,Pohjala, Esko,Vepsaelaeinen, Jouko
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p. 1345 - 1354
(2007/10/03)
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- New synthesis of 1,5-disubstituted imidazoles
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A new synthesis of 1-alkylimidazole-5-carbaldehydes starting from [3- (dimethylamino)-2-azaprop-2-enylidene]dimethylammonium chloride and alkyl N- alkylglycinate is described.
- Kirchlechner,Casutt,Heywang,Schwarz
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p. 247 - 248
(2007/10/02)
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- Synthesis of L-histidine specifically labelled with stable isotopes
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(2'-13C)-, (1'-15N)- and (3'-15N)-L-Histidine were prepared according to a synthetic scheme that allows the 13C or 15N labelling of all carbon and nitrogen positions or any combination of positions.A 1,5-disubstituted imidazole ring was constructed via condensation of tosylmethyl isocyanide with 3-phenylpropenal and subsequent cycloaddition of benzylamine.The imidazole intermediate was converted into 1-benzyl-5-(chloromethyl)-imidazolium chloride which was coupled to a glycine moiety via an enantioselective coupling with the bislactim ether of cyclo-D-valylglycine.Deprotection of the coupling product afforded L-histidine in high optical purity.Syntheses for the isotopically labelled synthons were developed starting from simple, comercially available, highly enriched compounds.The labelled L-histidines were characterized by mass spectrometry and 1H-, 13C- and 15N-NMR spectroscopy.
- Cappon, J. J.,Witters, K. D.,Baart, J.,Verdegem, P. J. E.,Hoek, A. C.,et al.
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p. 318 - 328
(2007/10/02)
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- Synthesis of 4(5)-Acyl-, 1-Substituted 5-Acyl, and 1-Substituted 4-Acyl-1H-imidazoles from 4-Aminoisoxazoles
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4-Aminoisoxazoles can be acylated with a wide variety of activated carboxylic acids.Hydrogenation of the resulting amides gives α-(acylamino)enaminones, which cyclize to 4(5)-acylimidazoles upon treatment with base.This method allows for the synthesis of acylimidazoles with a wide range of substituents at C-2.Utilization of N-substituted 4-aminoisoxazoles in the same sequence of reactions yields 1-substituted 5-acylimidazoles, a substitution pattern not otherwise easily prepared.Treatment of α-(acylamino)enaminones, derived from N-unsubstituted isoxazoles, with primary amines leads to incorporation of the amine at the β-position with concomitant expulsion of ammonia.This sequence efficiently yields 1-substituted and 1,2-disubstituted 4-acylimidazoles but does not give satisfactory yields of 5-substituted 4-acylimidazoles due to steric inhibition of the amine exchange.
- Reiter, Lawrence A.
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p. 2714 - 2726
(2007/10/02)
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- THE CHEMICAL SIMULATION OF THE "ATP-IMIDAZOLE" CYCLE
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The synthetic strategy inherent in the "ATP-Imidazole" cycle and centred around the vicinal disposition of -NH2 and -CONH2 functions, has been demonstrated with anthranilamide (2) and 1-benzyl-5-aminoimidazole-4-carboxamide (1) as regeneratable carriers involving specifically N-alkylated quinazolin-4-ones, hypoxantines and adenines, as key intermediates.The isolation and characterization of the enamine (22) coupled with other observations has made it possible to rationalize the pathways involved in these cyclic operations.The practical utility of the synthetic strategy using regeneratable carriers has beem illustrated with the synthesis of a range of 1,5-disubstituted imidazoles.Whilst pathways leading to specific N-alkylation in the Natural cycle and in simulation studies are comparable, the subsequent events take place in a reverse order, primarily because of the divergence in the hydrolitic profile of the alkylated substrates.The action of dilute alkali on 3-alkylated quinazolin-4-ones leads to 2-3 rather than 3-4 bond rupture.Endeavours to promote the latter path, by blocking the 2 position gave unexpected results. 2-Methyl-3-phenacyl quinazolin-4-one gave with dilute alkali the novel aromatic tricyclic system (32) from trans-annular cyclization.On the other hand the 2-blocked 3-benzamido quinazolin-4-ones (33) and (34) gave triazoles (35) and (36) arising from the desired 3-4 rupture followed by cyclization initiated by the resulting amidine unit. 2-Phenil-3-benzamidoquinazolin-4-one (34) with distilled water at 200 deg C gave a number of products whicc have been identified and their formation explained.
- Ranganathan, Darshan,Farooqui, Firdous,Bhattacharyya, Diphti,Mehrotra, Sanjiv,Kesavan, K.
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p. 4481 - 4492
(2007/10/02)
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