Tag: M.W:200-300

Srinivasulu, Vunnam; Reddy, Amarnath; Mazitschek, Ralph; Lukens, Amanda K.; Wirth, Dyann F.; Li, Liang; Naumov, Pance; O’Connor, Matthew John; Al-Tel, Taleb H. published the article 《Intramolecular Diaza-Diels-Alder Protocol: A New Diastereoselective and Modular One-Step Synthesis of Constrained Polycyclic Frameworks》. Keywords: diastereoselective modular polycyclic benzopyran benzoxepine preparation antimalarial activity SAR; acid mediated diaza Diels Alder reaction benzaldehyde aminoazine; antimalarial activity; cycloaddition; polycycles; structure-activity relationships; synthesis design.They researched the compound: 4-(4-Bromophenyl)-5-methylthiazol-2-amine( cas:65705-44-4 ).Safety of 4-(4-Bromophenyl)-5-methylthiazol-2-amine. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:65705-44-4) here.

Phenotype-based screening of diverse compound collections generated by privileged substructure-based diversity-oriented synthesis (pDOS) is considered one of the prominent approaches in the discovery of novel drug leads. However, one key challenge that remains is the development of efficient and modular synthetic routes toward the facile access of privileged small-mol. libraries with skeletal and stereochem. complexity and drug-like properties. In this regard, a novel and diverse one-pot procedure for the diastereoselective synthesis of privileged polycyclic benzopyrans and benzoxepines is described herein. These unexplored chemotypes were accessed by utilizing an acid-mediated diaza-Diels-Alder reaction of 2-allyloxy- and/or homoallyloxy benzaldehyde with 2-aminoazine building blocks. Profiling of representative analogs against blood-stage Plasmodium falciparum parasites identified three lead candidates with low micromolar antimalarial activity.

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

Roffey, S. J.; Cole, S.; Comby, P.; Gibson, D.; Jezequel, S. G.; Nedderman, A. N. R.; Smith, D. A.; Walker, D. K.; Wood, N. published an article about the compound: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone( cas:86404-63-9,SMILESS:FC1=CC=C(C(CN2N=CN=C2)=O)C(F)=C1 ).Related Products of 86404-63-9. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:86404-63-9) through the article.

Voriconazole is a new triazole antifungal agent with potent, wide-spectrum activity. Its pharmacokinetics and metabolism have been studied in mouse, rat, rabbit, dog, guinea pig, and humans after single and multiple administration by both oral and i.v. routes. Absorption of voriconazole is essentially complete in all species. The elimination of voriconazole is characterized by non-linear pharmacokinetics in all species. Consequently, pharmacokinetic parameters are dependent upon dose, and a superproportional increase in area under the curve is seen with increasing dose in rat and dog toxicol. studies. Following multiple administration, there is a decrease in systemic exposure. This is most pronounced in mouse and rat, less so in dog, and not observed in guinea pig or rabbit. Repeat-dose toxicol. studies in mouse, rat, and dog have demonstrated that induction of cytochrome P 450 by voriconazole (autoinduction of metabolism) is responsible for the decreased exposure in these species. Autoinduction of metabolism is not observed in humans, and plasma steady-state concentrations remain constant with time. Voriconazole is extensively metabolized in all species. The major pathways in humans involve fluoropyrimidine N-oxidation, fluoropyrimidine hydroxylation, and Me hydroxylation. Also, N-oxidation facilitates cleavage of the mol., resulting in loss of the fluoropyrimidine moiety and subsequent conjugation with glucuronic acid. Major pathways are represented in animal species. The major circulating metabolite in rat, dog, and human is the N-oxide of voriconazole. It is not thought to contribute to efficacy since it is at least 100-fold less potent than voriconazole against fungal pathogens in vitro.

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

Creaser, Colin S.; Stygall, James W.; Bowen, David V.; Pullen, Frank S. published the article 《Particle beam-mass spectrometric analysis of difluorophenyl triazole compounds using normal phase-HPLC》. Keywords: fluconazole determination HPLC mass spectrometry; fluorophenyl triazole HPLC mass spectrometry.They researched the compound: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone( cas:86404-63-9 ).Category: triazoles. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:86404-63-9) here.

Normal phase liquid chromatog. combined with particle beam mass spectrometry has been applied to the anal. of fluconazole, an anti-fungal agent, [2-(2,4-difluorophenyl)-1,3-bis(1H-1,2,4-triazol-1-yl)propan-2-ol] and a related intermediate, UK-51060 [2-(2,4-difluorophenyl)-1-(1H-1,2,4-triazol-1-yl)ethan-2-one]. Electron ionization and chem. ionization have been investigated in combination with quadrupole ion trap and magnetic sector mass spectrometers and the spectra obtained compared with those for direct probe anal. A novel method for the introduction of the chem. ionization reagent gas via the interface is described for particle beam-magnetic sector mass spectrometry. Multi-stage scan routines have been implemented on the ion trap for the selective storage of analyte species and removal of solvent ions. Detection limits for both spectrometers have been determined and are discussed in terms of interface geometry and analyte transport characteristics. Normal phase HPLC on silica provided a good separation of the intermediate from the later eluting fluconazole peak.

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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 alkylated azoles as potent antifungals, the main research direction is triazole preparation antifungal; Cytotoxicity; Ergosterol; Fluconazole; Hemolysis; Time-kill curves.Application In Synthesis of 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone.

The synthesis of new FLC derivatives I (R = 2,4-Cl2, 2-F, 3-F, 4-F, etc.; n = 0, 1, 2, 3, 4, 5) along with their antifungal activity against a panel of 13 clin. relevant fungal strains was developed. Also, their toxicity against mammalian cells, their hemolytic activity, as well as their mechanism of action were explored. Overall, many of our FLC derivatives I exhibited broad-spectrum antifungal activity and all compounds displayed an MIC value of <0.03 μg/mL against at least one of the fungal strains tested. Also, they were found to be less hemolytic and less cytotoxic to mammalian cells than the FDA approved antifungal agent amphotericin B. The mechanism of action of compounds has been demonstrated as best derivative for the inhibition of the sterol 14α-demethylase enzyme, involved in ergosterol biosynthesis. When you point to this article, it is believed that you are also very interested in this compound(86404-63-9)Application In Synthesis of 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone and due to space limitations, I can only present the most important information.

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

Quality Control of 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone, is researched, Molecular C10H7F2N3O, CAS is 86404-63-9, about Synthesis of fluconazole. Author is Wang, Jianxiang.

The improved synthetic technol. of fluconazole was presented. Fluconazole was produced by 4-step reactions with m-difluorobenzenes as starting material and PEG as phase-transfer catalyst, including acylating with chloroacetyl chloride, substitution reaction with 1,2,4-triazole, the reaction with Me3SOI, and ring opening with 1,2,4-triazole. The product could remove impurity of identical structure after recrystallization, with a yield above 50%. The purity of product was above 98.5%, the quality was stable, and the process is reliable.

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

Chai, Xiaoyun; Zhang, Jun; Yu, Shichong; Hu, Honggang; Zou, Yan; Zhao, Qingjie; Dan, Zhigang; Zhang, Dazhi; Wu, Qiuye published the article 《Design, synthesis, and biological evaluation of novel 1-(1H-1,2,4-triazole-1-yl)-2-(2,4-difluorophenyl)-3-substituted benzylamino-2-propanols》. Keywords: triazolyl difluorophenyl aralkylamino propanol preparation antifungal activity computational chem.They researched the compound: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone( cas:86404-63-9 ).Electric Literature of C10H7F2N3O. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:86404-63-9) here.

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 benzylamino-2-propanols, e.g., I, as analogs of fluconazole were designed, synthesized, and evaluated as antifungal agents. Results of preliminary antifungal tests against eight human pathogenic fungi in vitro showed that all the title compounds exhibited excellent activities with broad spectrum.

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

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