Month: April 2022

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Article, Drug Metabolism and Disposition called The disposition of voriconazole in mouse, rat, rabbit, guinea pig, dog, and human, Author is Roffey, S. J.; Cole, S.; Comby, P.; Gibson, D.; Jezequel, S. G.; Nedderman, A. N. R.; Smith, D. A.; Walker, D. K.; Wood, N., which mentions a compound: 86404-63-9, SMILESS is FC1=CC=C(C(CN2N=CN=C2)=O)C(F)=C1, Molecular C10H7F2N3O, Application In Synthesis of 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone.

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

Recommanded Product: 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 Development and validation of a liquid chromatographic method for the stability study of a pharmaceutical formulation containing voriconazole using cellulose tris(4-chloro-3-methylphenylcarbamate) as chiral selector and polar organic mobile phases. Author is Servais, Anne-Catherine; Moldovan, Radu; Farcas, Elena; Crommen, Jacques; Roland, Isabelle; Fillet, Marianne.

The ophthalmic solution of voriconazole, i.e. (2R,3S)-2-(2,4-difluorophenyl)-3-(5-fluoropyrimidin-4-yl)-1-(1H-1,2,4-triazol-1-yl)butan-2-ol, made from an injection formulation which also contains sulfobutylether-β-cyclodextrin sodium salt as an excipient (Vfend), is used for the treatment of fungal keratitis. A liquid chromatog. (LC) method using polar organic mobile phase and cellulose tris(4-chloro-3-methylphenylcarbamate) coated on silica as chiral stationary phase was successfully developed to evaluate the chiral stability of the ophthalmic solution The percentage of methanol (MeOH) in the mobile phase containing acetonitrile (ACN) as the main solvent significantly influenced the retention and resolution of voriconazole and its enantiomer ((2S,3R)-2-(2,4-difluorophenyl)-3-(5-fluoropyrimidin-4-yl)-1-(1H-1,2,4-triazol-1-yl)butan-2-ol). The optimized mobile phase consisted of ACN/MeOH/diethylamine/trifluoroacetic acid (80/20/0.1/0.1; volume/volume/volume/volume). The method was found to be selective not only regarding the enantiomer of voriconazole but also regarding the specified impurities described in the monograph from the European Pharmacopoeia. The LC method was then fully validated applying the strategy based on total measurement error and accuracy profiles. Under the selected conditions, the determination of 0.1% of voriconazole enantiomer could be performed. Finally, a stability study of the ophthalmic solution was conducted using the validated LC method.

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

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone(SMILESS: FC1=CC=C(C(CN2N=CN=C2)=O)C(F)=C1,cas:86404-63-9) is researched.Related Products of 3400-55-3. The article 《Design, Synthesis, and Antifungal Activity of Novel Conformationally Restricted Triazole Derivatives》 in relation to this compound, is published in Archiv der Pharmazie (Weinheim, Germany). Let’s take a look at the latest research on this compound (cas:86404-63-9).

A series of new triazole derivatives were designed and synthesized on the basis of the active site of lanosterol 14α-demethylase from Candida albicans (CACYP51). 2-(2,4-Difluorophenyl)-3-(methyl-(3-phenoxyalkyl)amino)-1-(1H-1,2,4-triazol-1-yl)propan-2-ols show excellent in-vitro activity against most of the tested pathogenic fungi. The MIC80 value of compound I against Candida albicans is 0.01 μM, which provides a good starting template for further structural optimization. The binding modes of the designed compounds were investigated by flexible mol. docking. The compounds interacted with CACYP51 through hydrophobic, van-der-Waals, and hydrogen-bonding interactions.

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

HPLC of Formula: 3222-47-7. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 6-Methylnicotinic acid, is researched, Molecular C7H7NO2, CAS is 3222-47-7, about Structure-activity relationship studies of tolfenpyrad reveal subnanomolar inhibitors of Haemonchus contortus development. Author is Le, Thuy G.; Kundu, Abhijit; Ghoshal, Atanu; Nguyen, Nghi H.; Preston, Sarah; Jiao, Yaqing; Ruan, Banfeng; Xue, Lian; Huang, Fei; Keiser, Jennifer; Hofmann, Andreas; Chang, Bill C. H.; Garcia-Bustos, Jose; Wells, Timothy N. C.; Palmer, Michael J.; Jabbar, Abdul; Gasser, Robin B.; Baell, Jonathan B..

Recently, we have discovered that the registered pesticide, tolfenpyrad, unexpectedly and potently inhibits the development of the L4 larval stage of the parasitic nematode Haemonchus contortus with an IC50 value of 0.03 μM while displaying good selectivity, with an IC50 of 37.9 μM for cytotoxicity. As a promising mol. template for medicinal chem. optimization, we undertook anthelmintic structure-activity relationships for this chem. Modifications of the left-hand side (LHS), right-hand side (RHS), and middle section of the scaffold were explored to produce a set of 57 analogs. Analogs I, II, and III were shown to be the most potent compounds of the series, with IC50 values at a subnanomolar level of potency against the chemotherapeutically relevant fourth larval (L4) stage of H. contortus. Selected compounds from the series also showed promising activity against a panel of other different parasitic nematodes, such as hookworms and whipworms.

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

Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 86404-63-9, is researched, SMILESS is FC1=CC=C(C(CN2N=CN=C2)=O)C(F)=C1, Molecular C10H7F2N3OJournal, Article, Scientia Pharmaceutica called A validated stability-indicating liquid chromatographic method for determination of degradation impurities and diastereomers in voriconazole tablets, Author is Shaikh, Kabeer A.; Patil, Ashish T., the main research direction is voriconazole determination RP HPLC diastereomer degradation impurity tablet; Development; Forced Degradation study; HPLC; Validation; Voriconazole.Product Details of 86404-63-9.

A reversed-phase gradient liquid chromatog. method was developed for the quant. determination of Voriconazole, along with its degradation and diastereomeric impurities in tablet dosage form. Chromatog. separation was achieved on an Inertsil ODS 3V, 150 × 4.6 mm, 5 μm column. The mobile phase consisting of solvent A 0.05 M (M) potassium dihydrogen phosphate (pH 2.5 buffer) and solvent B (mixture of acetonitrile and MeOH in the ratio 90:10 (volume/volume)), was delivered at a flow rate of 1.2 mL min-1 with the detection wavelength at 256 nm. Resolution of Voriconazole and all 5 potential impurities was achieved at > 2.0 for all pairs of compounds The drug was subjected to stress conditions such as oxidative, acid and base hydrolysis, and thermal and photolytic degradation Voriconazole was found to degrade significantly under base hydrolysis stress conditions compared to acid hydrolysis stress conditions. The degradation products were well-resolved from the main peak and its impurities, thus proving the stability-indicating power of the method. The stressed samples were assayed against a reference standard and the mass balance was found to be close to 99.0%. The developed method was validated as per ICH guidelines with respect to specificity, linearity, limit of detection, limit of quantification, accuracy, precision, and robustness.

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

Reference of 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, synthesis and evaluation of clinafloxacin triazole hybrids as a new type of antibacterial and antifungal agents. Author is Wang, Yan; Damu, Guri L. V.; Lv, Jing-Song; Geng, Rong-Xia; Yang, Da-Cheng; Zhou, Cheng-He.

A series of clinafloxacin triazole hybrids as a new type of antibacterial and antifungal agents were synthesized for the first time and screened for their antimicrobial efficacy against four Gram-pos. bacteria, four Gram-neg. bacteria, and two fungi by two fold serial dilution technique. The bioactive assay indicated that most of the target compounds displayed broad antimicrobial spectrum and good antibacterial and antifungal activities with low MIC values ranging from 0.25 to 2 μg/mL against all the tested strains which exhibited comparable or even better efficiency in comparison with the reference drugs Chloramphenicol, Clinafloxacin, and Fluconazole, resp. Notably, some synthesized clinafloxacin triazoles showed stronger efficacy against methicillin-resistant Staphylococcus aureus than their parent Clinafloxacin.

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

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Article, Acta Crystallographica, Section E: Structure Reports Online called (2,4-Difluorophenyl)[1-(1H-1,2,4-triazol-1-yl)cyclopropyl]methanone, Author is Wu, Chunli; Lei, Wei; Ma, Huiyan; Qiao, Jiabin; Li, Aixing, which mentions a compound: 86404-63-9, SMILESS is FC1=CC=C(C(CN2N=CN=C2)=O)C(F)=C1, Molecular C10H7F2N3O, Product Details of 86404-63-9.

The asym. unit of the title compound, C12H9F2N3O, contains two independent mols. (A and B) in which the benzene and cyclopropane rings form dihedral angles of 33.0(1) and 29.7(1)°, resp. In the crystal, weak intermol. C-H···O hydrogen bonds link alternating A and B mols. into chains along [010].

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

HPLC of Formula: 65705-44-4. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. 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. Author is Peng, Yi-Hui; Liao, Fang-Yu; Tseng, Chen-Tso; Kuppusamy, Ramajayam; Li, An-Siou; Chen, Chi-Han; Fan, Yu-Shiou; Wang, Sing-Yi; Wu, Mine-Hsine; Hsueh, Ching-Cheng; Chang, Jia-Yu; Lee, Lung-Chun; Shih, Chuan; Shia, Kak-Shan; Yeh, Teng-Kuang; Hung, Ming-Shiu; Kuo, Ching-Chuan; Song, Jen-Shin; Wu, Su-Ying; Ueng, Shau-Hua.

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

Pullen, Frank S.; Swanson, Alistair G.; Newman, Michael J.; Richards, Don S. 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 ).Safety of 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone. 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.

Liquid chromatog. (LC), simultaneously coupled with both NMR and mass spectrometry (MS) ‘online’ is a powerful structural tool and has a potentially vast range of uses within the pharmaceutical industry. Data from a mixture of fluconazole and related triazoles were obtained from an LC/NMR-MS system developed ‘inhouse’, demonstrating the power of this novel anal. approach.

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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. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four 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 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone. Author is Tao, Xiao; Yuan, Lin; Zhang, Xiao-Qing; Jing, Chen; Wang, Jin-Tang.

In the mol. of 1-(2,4-difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone, C10H7F2N3O, the dihedral angle between the planar rings is 84.00(4)°. Intermol. C-H···N H bonds link the mols. and may be effective in stabilizing the crystal structure. Crystallog. data are given.

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