Category: Triazoles

Safety of 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone, is researched, Molecular C10H7F2N3O, CAS is 86404-63-9, about Spray-dried voriconazole-cyclodextrin complexes: Solubility, dissolution rate and chemical stability. Author is Miletic, Tijana; Kyriakos, Kachrimanis; Graovac, Adrijana; Ibric, Svetlana.

The present work investigates the effect of complexation with hydroxypropyl-beta-cyclodextrin (HPBCD) and 2-O-methyl-beta-cyclodextrin (2-O-MBCD), on voriconazole solubility, dissolution rate and chem. stability. Drug-cyclodextrin complexes were prepared as aqueous solutions, which were spray-dried, and their properties were compared to wet ground samples and phys. mixtures DSC anal. revealed absence of crystalline voriconazole from spray-dried complexes. FTIR spectroscopy indicated changes in the H-bonding network of the hydroxyl groups of cyclodextrin following drug inclusion. Dissolution rate of voriconazole was significantly higher from spray-dried complexes with either cyclodextrin in comparison with free drug, phys. mixtures, or wet ground mixtures However, two degradation impurities were found in aged samples, with slightly higher impurity level with HPBCD. Performed solubility studies suggested that 2-O-MBCD is more efficient solubilizer. Mol. docking simulations showed a difference in the 1:1 binding affinities and sites, with HPBCD surprisingly forming complexes of much lower energy, thus suggesting a multiple rather than a 1:1 complexation.

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Reference:
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Recommanded Product: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone, is researched, Molecular C10H7F2N3O, CAS is 86404-63-9, about Novel triazole alcohol antifungals derived from fluconazole: design, synthesis, and biological activity. Author is Hashemi, Seyedeh Mahdieh; Badali, Hamid; Faramarzi, Mohammad Ali; Samadi, Nasrin; Afsarian, Mohammad Hosein; Irannejad, Hamid; Emami, Saeed.

A series of new triazole alc. antifungals were designed by replacing one of the triazolyl moiety from fluconazole with a distinct 4-amino-3-mercapto-1,2,4-triazole motif, which is found in some antimicrobial agents. The antimicrobial susceptibility testing of target compounds demonstrated that the direct analogs of fluconazole (difluorophenethyl-triazoles) were less active against fungi, while compound 10h containing dichloro substitutions on both Ph rings of the mol. had potent activity against yeasts including Candida albicans (four strains) and Cryptococcus neoformans (MICs = 2-8 μg/mL). Also, compound 10h was active against Candida parapsilosis, Epidermophyton floccosum, and Trichophyton mentagrophytes, while it showed no activity against Gram-pos. and Gram-neg. bacteria. Finally, a mol. docking study suggested that compound 10h interacts suitably with lanosterol 14α-demethylase, which is the key enzyme in ergosterol biosynthesis.

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Reference:
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 86404-63-9, is researched, Molecular C10H7F2N3O, about Novel antifungal 2-aryl-1-(1H-1,2,4-triazol-1-yl)butan-2-ol derivatives with high activity against Aspergillus fumigatus, the main research direction is aryltriazolylbutanol preparation fungicide; triazolylbutanol aryl preparation fungicide; voriconazole preparation fungicide.Related Products of 86404-63-9.

Replacement of one triazole ring of fluconazole with 4-pyridinyl leads to an increase in activity against Aspergillus fumigatus. Introduction of an α-Me group has a marked addnl. beneficial effect. Investigation of pyridinyl and pyrimidinyl analogs resulted in the identification of compound I (UK-109,496, voriconazole) which has excellent potency against a broad range of fungal pathogens including A. fumigatus and Candida krusei.

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1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: 4-(4-Bromophenyl)-5-methylthiazol-2-amine, is researched, Molecular C10H9BrN2S, CAS is 65705-44-4, about Unique Sulfur-Aromatic Interactions Contribute to the Binding of Potent Imidazothiazole Indoleamine 2,3-Dioxygenase Inhibitors.Related Products of 65705-44-4.

Indoleamine 2,3-dioxygenase (IDO1) inhibitors are speculated to be useful in cancer immunotherapy, but a phase III clin. trial of the most advanced IDO1 inhibitor, epacadostat, did not meet its primary endpoint and was abandoned. In previous work we identified the novel IDO1 inhibitor N-(4-chlorophenyl)-2-((5-phenylthiazolo[2,3-c][1,2,4]triazol-3-yl)thio)acetamide 1 through high-throughput screening (HTS). Herein, we report a structure-activity relationship (SAR) study of this compound, which resulted in the potent IDO1 inhibitor 1-(4-cyanophenyl)-3-(3-(cyclopropylethynyl)imidazo[2,1-b]thiazol-5-yl)thiourea 47 (hIDO IC50 = 16.4 nM). X-ray co-crystal structural anal. revealed that the basis for this high potency is a unique sulfur-aromatic interaction network formed by the thiourea moiety of 47 with the F163 and F226. This finding is expected to inspire new approaches towards the discovery of potent IDO1 inhibitors in the future.

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Reference:
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

SDS of cas: 86404-63-9. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone, is researched, Molecular C10H7F2N3O, CAS is 86404-63-9, about 7-Fluoro-2-(prop-2-en-1-ylsulfanyl)-3-(1H-1,2,4-triazol-1-yl)-4H-thiochromen-4-one. Author is Liu, Dong Liang; Xiao, Tao; Li, Yang; Yu, Guang Yan; Li, Chen.

The asym. unit of the title compound, C14H10FN3OS2, contains two independent mols. which differ in the relative orientations of the triazole and allylsulfanyl groups with respect to the planar thiochromen-4-one frameworks. The N-N-C-C torsion angles are 128.2(5) and -120.9(5)°, while the C-S-C-S torsion angles are -17.4(4) and 16.4(4)°. In the crystal, intermol. C-H···O and C-H···N hydrogen bonds link the mols. in a stacked arrangement along the a axis.

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1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Application of 86404-63-9. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone, is researched, Molecular C10H7F2N3O, CAS is 86404-63-9, about Design, synthesis, and biological evaluation of novel triazole derivatives as inhibitors of cytochrome P450 14α-demethylase. Author is Chai, Xiaoyun; Zhang, Jun; Hu, Honggang; Yu, Shichong; Sun, Qingyan; Dan, Zhigang; Jiang, Yuanying; Wu, Qiuye.

Based on the results of computational docking to the active site of the cytochrome P 450 14α-demethylase (CYP51), a series of 1-(1H-1,2,4-triazole-1-yl)-2-(2,4-difluorophenyl)-3-substituted-2-propanols I (R = H, 2-F, 2,4-Cl2, 4-MeO2C, PhO2C, etc.) as analogs of fluconazole were designed, synthesized, and evaluated as antifungal agents. The MIC80 values indicate that compounds I (R = H, 2-F, 4-Me, etc.) exhibited higher activity against nearly all fungi tested except Aspergillus fumigatus than fluconazole, while I (R = COOR1, R1 = Me, Et, iso-Pr, COOAr, etc.; Ar = Ph, 3-O2NC6H4, 4-ClC6H4, 2-MeO2CC6H4, etc.) showed no activity or only moderate activity against all fungi tested. Noticeably, the MIC value of I (R = H, 2-F, 4-Cl) is 64 times lower than that of fluconazole against Microsporum gypseum in vitro. And I (R = H, 2-F, CO2Et) showed 128 times higher activity (with the MIC80 value of 0.0039 μg/mL) than that of fluconazole against Candida albicans and also showed higher activity than that of the other pos. controls. Computational docking experiments indicated that the inhibition of CYP51 involves a coordination bond with iron of the heme group, the hydrophilic H-bonding region, the hydrophobic region, and the narrow hydrophobic cleft. In addition, the activity of the compounds would be enhanced when the side chains were shorter.

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Reference:
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone, is researched, Molecular C10H7F2N3O, CAS is 86404-63-9, about Spray-dried voriconazole-cyclodextrin complexes: Solubility, dissolution rate and chemical stability.Formula: C10H7F2N3O.

The present work investigates the effect of complexation with hydroxypropyl-beta-cyclodextrin (HPBCD) and 2-O-methyl-beta-cyclodextrin (2-O-MBCD), on voriconazole solubility, dissolution rate and chem. stability. Drug-cyclodextrin complexes were prepared as aqueous solutions, which were spray-dried, and their properties were compared to wet ground samples and phys. mixtures DSC anal. revealed absence of crystalline voriconazole from spray-dried complexes. FTIR spectroscopy indicated changes in the H-bonding network of the hydroxyl groups of cyclodextrin following drug inclusion. Dissolution rate of voriconazole was significantly higher from spray-dried complexes with either cyclodextrin in comparison with free drug, phys. mixtures, or wet ground mixtures However, two degradation impurities were found in aged samples, with slightly higher impurity level with HPBCD. Performed solubility studies suggested that 2-O-MBCD is more efficient solubilizer. Mol. docking simulations showed a difference in the 1:1 binding affinities and sites, with HPBCD surprisingly forming complexes of much lower energy, thus suggesting a multiple rather than a 1:1 complexation.

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Reference:
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 4-(4-Bromophenyl)-5-methylthiazol-2-amine( cas:65705-44-4 ) is researched.Related Products of 65705-44-4.Hanke, Thomas; Dehm, Friederike; Liening, Stefanie; Popella, Sven-Desiderius; Maczewsky, Jonas; Pillong, Max; Kunze, Jens; Weinigel, Christina; Barz, Dagmar; Kaiser, Astrid; Wurglics, Mario; Laemmerhofer, Michael; Schneider, Gisbert; Sautebin, Lidia; Schubert-Zsilavecz, Manfred; Werz, Oliver published the article 《Aminothiazole-Featured Pirinixic Acid Derivatives As Dual 5-Lipoxygenase and Microsomal Prostaglandin E2 Synthase-1 Inhibitors with Improved Potency and Efficiency in Vivo》 about this compound( cas:65705-44-4 ) in Journal of Medicinal Chemistry. Keywords: aminothiazole pirinixic acid preparation Lipoxygenase mPGES1 inhibitory activity. Let’s learn more about this compound (cas:65705-44-4).

Dual inhibition of microsomal prostaglandin E2 synthase-1 (mPGES-1) and 5-lipoxygenase (5-LO) is currently pursued as potential pharmacol. strategy for treatment of inflammation and cancer. Here we present a series of 26 novel 2-aminothiazole-featured pirinixic acid derivatives as dual 5-LO/mPGES-1 inhibitors with improved potency (exemplified by compound 2-[(4-chloro-6-{[4-(naphthalen-2-yl)-1,3-thiazol-2-yl]-amino}-pyrimidin-2-yl)-sulfanyl]-octanoic acid (I) with IC50 = 0.3 and 0.4 μM, resp.) and bioactivity in vivo. Computational anal. presumes binding sites of I at the tip of the 5-LO catalytic domain and within a subpocket of the mPGES-1 active site. Compound I (10 μM) hardly suppressed cyclooxygenase (COX)-1/2 activities, failed to inhibit 12/15-LOs, and is devoid of radical scavenger properties. Finally, compound I reduced vascular permeability and inflammatory cell infiltration in a zymosan-induced mouse peritonitis model accompanied by impaired levels of cysteinyl-leukotrienes and prostaglandin E2. Together, 2-aminothiazole-featured pirinixic acids represent potent dual 5-LO/mPGES-1 inhibitors with an attractive pharmacol. profile as anti-inflammatory drugs.

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Reference:
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Recommanded Product: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone, is researched, Molecular C10H7F2N3O, CAS is 86404-63-9, about Design and synthesis of novel triazole antifungal derivatives by structure-based bioisosterism. Author is Sheng, Chunquan; Che, Xiaoying; Wang, Wenya; Wang, Shengzheng; Cao, Yongbing; Miao, Zhenyuan; Yao, Jianzhong; Zhang, Wannian.

The incidence of life-threatening fungal infections is increasing dramatically. In an attempt to develop novel antifungal agents, our previously synthesized phenoxyalkylpiperazine triazole derivatives were used as lead structures for further optimization. By means of structure-based bioisosterism, triazolone was used as a new bioisostere of oxygen atom. This type of bioisosteric replacement can improve the water solubility without loss of hydrogen-bonding interaction with the target enzyme. A series of triazolone-containing triazoles were rationally designed and synthesized. As compared with fluconazole, several compounds showed higher antifungal activity with broader spectrum, suggesting their potential for further evaluations.

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Reference:
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Recommanded Product: 3222-47-7. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 6-Methylnicotinic acid, is researched, Molecular C7H7NO2, CAS is 3222-47-7, about Non-negative Least Squares Approach to Quantification of 1H Nuclear Magnetic Resonance Spectra of Human Urine. Author is Kopriva, Ivica; Jeric, Ivanka; Hadzija, Marijana Popovic; Hadzija, Mirko; Lovrencic, Marijana Vucic.

Because of its quant. character and capability for high-throughput screening, 1H NMR (NMR) spectroscopy is used extensively in the profiling of biofluids such as urine and blood plasma. However, the narrow frequency bandwidth of 1H NMR spectroscopy leads to a severe overlap of the spectra of components present in the complex mixtures such as biofluids. Therefore, 1H NMR-based metabolomics anal. is focused on targeted studies related to concentrations of the small number of metabolites. Here, we propose a library-based approach to quantify proportions of overlapping metabolites from 1H NMR mixture spectra. The method boils down to the linear non-neg. least squares (NNLS) problem, whereas proportions of the pure components contained in the library stand for the unknowns. The method is validated on an estimation of the proportions of (i) the 78 pure spectra, presumably related to type 2 diabetes mellitus (T2DM), from their synthetic linear mixture; (ii) metabolites present in 62 1H NMR spectra of urine of subjects with T2DM and 62 1H NMR spectra of urine of control subjects. In both cases, the inhouse library of 210 pure component 1H NMR spectra represented the design matrix in the related NNLS problem. The proposed method pinpoints 63 metabolites that in a statistically significant way discriminate the T2DM group from the control group and 46 metabolites discriminating control from the T2DM group. For several T2DM-discriminative metabolites, we prove their presence by independent anal. determination or by pointing out the corresponding findings in the published literature.

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Reference:
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics