Category: Triazoles

COA of Formula: C10H7F2N3O. 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 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 reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《5-(p-Aminobenzenesulfonamido)thiazole》. Authors are Arnold, M. H. M.; Scaife, C. W..The article about the compound:5-Aminothiazole-2-carbonitrilecas:860182-74-7,SMILESS:N#CC1=NC=C(N)S1).Electric Literature of C4H3N3S. Through the article, more information about this compound (cas:860182-74-7) is conveyed.

5-Amino-2-thiazolethiocarboxamide (I) (chrysean of Wallach, Ber. 7, 902(1874)), m. 204° (decomposition), results in 25-g. yield by passing H2S (20-30 l./hr.) into saturated aqueous NaCN and a little NH4OH for 3-4 hrs.; acidification of the filtrate gives 30-40% (of the NaCN) of a reddish brown precipitate which decomposes on heating with H2O to give H2S and a black alkali-soluble tar. Many other methods were tried with yields not over 15-20%. I (10 g.) and 23.9 g. Pb(OAc)2 in 70 ml. H2O, refluxed 3 hrs., give 5-amino-2-thiazolecarbonitrile (II), m. 103° (Hellsing, Ber. 32, 1497(1899)). If the filtrate containing II is treated with CaCO3 in slight excess above that required to neutralize the AcOH and the mixture is refluxed 2 hrs., there results a good yield of 5-amino-2-thiazolecarboxamide, decomposes 156°. Hydrolysis of II with dilute HCl gives a small yield of 2-amino-2-thiazolecarboxylic acid, decomposes 185°; this could not be decarboxylated to 5-aminothiazole. II and BzH in EtOH give the 5-benzylideneamino compound, light yellow, m. 141°; this and the benzylidene derivative of I are too easily hydrolyzed for this method of protecting the NH2 group to be of any use. Attempts to diazotize I and II in the normal way gave highly colored tars, which appeared to be formed by intermol. condensation; II is diazotized by gradual addition of the solution to excess of HCl and NaNO2 at 0°; I has been diazotized by adding its solution in C5H5N to excess of NOCl in C6H6. I and p-O2NC6H4SO2Cl in C5H5N give the 5-(p-nitrophenylsulfonamido) compound, m. 185° (decomposition); the same derivative of II m. 148°. p-AcNHC6H4SO2Cl and I in C5H5N give the 5-(p-acetamidophenylsulfonamido) compound (III), m., 253-5° (decomposition); shaking with PbCO3 and refluxing the filtrate for 3 hrs. give a moderately good yield of 5-sulfanilamidothiazole (IV), m. 185° (decomposition). III is completely inactive against streptococcal infections and IV, although active, has no advantage over established sulfonamide drugs.

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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 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 Structure-Based Optimization of Azole Antifungal Agents by CoMFA, CoMSIA, and Molecular Docking. Author is Sheng, Chunquan; Zhang, Wannian; Ji, Haitao; Zhang, Min; Song, Yunlong; Xu, Hui; Zhu, Jie; Miao, Zhenyuan; Jiang, Qingfen; Yao, Jianzhong; Zhou, Youjun; Zhu, Jue; Lue, Jiaguo.

In a continuing effort to develop highly potent azole antifungal agents, the three-dimensional quant. structure-activity relationship methods, CoMFA and CoMSIA, were applied using a set of novel azole antifungal compounds The binding mode of the compounds at the active site of lanosterol 14α-demethylase was further explored using the flexible docking method. Various hydrophobic, van der Waals, π-π stacking, and hydrogen bonding interactions were observed between the azoles and the enzyme. Based on results from the mol. modeling, a receptor-based pharmacophore model was established to guide the rational optimization of the azole antifungal agents. Thus, a total of 57 novel azoles were designed and synthesized by a three-step optimization process. In vitro antifungal assay revealed that the antifungal activities of these novel azoles were greatly improved, which confirmed the reliability of the model from mol. modeling.

Here is just a brief introduction to this compound(86404-63-9)Reference of 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone, more information about the compound(1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone) is in the article, you can click the link below.

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

The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Discovery of highly potent novel antifungal azoles by structure-based rational design》. Authors are Wang, Wenya; Sheng, Chunquan; Che, Xiaoying; Ji, Haitao; Cao, Yongbing; Miao, Zhenyuan; Yao, Jianzhong; Zhang, Wannian.The article about the compound:1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanonecas:86404-63-9,SMILESS:FC1=CC=C(C(CN2N=CN=C2)=O)C(F)=C1).Name: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone. Through the article, more information about this compound (cas:86404-63-9) is conveyed.

On the basis of the active site of lanosterol 14α-demethylase from Candida albicans (CACYP51), a series of new azoles were designed and synthesized. All the new azoles show excellent in vitro activity against most of the tested pathogenic fungi, which represent a class of promising leads for the development of novel antifungal agents. The MIC80 value of compounds 8c, 8i and 8n against C. albicans is 0.001 μg/mL, indicating that these compounds are more potent than fluconazole, itraconazole and voriconazole. Flexible mol. docking was used to analyze the structure-activity relationships (SARs) of the compounds The designed compounds interact 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

COA of Formula: C7H7NO2. 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: 6-Methylnicotinic acid, is researched, Molecular C7H7NO2, CAS is 3222-47-7, about Artificial photosynthetic assemblies constructed by the self-assembly of synthetic building blocks for enhanced photocatalytic hydrogen evolution. Author is Wu, Jin; Xia, Wu; Lan, Minhuan; Xing, Xue-Jian; Hu, Jun-Chao; Huang, Li; Liu, Jing; Ren, Ying-Yi; Liu, Hongfang; Wang, Feng.

An artificial photosynthetic assembly (APA) of a hollow-rod structure was successfully constructed by using synthetic building blocks to mimic the structure and function of natural photosynthetic bacteria. The APA was formed by the incorporation of carbon nanoparticles as light harvesters into an enzyme-like polymer, PEI-Co, containing cobalt complexes as redox catalytic centers. The APA features a bacteria-like shape of ca. 2-3 μm length rods and a hollow structure positioning photosynthetic components at the surface. The APA integrates key components, the light harvester, redox catalyst, and proton relay group, of photosynthetic systems in assemblies formed from a polymeric framework. The APA system in aqueous solution converts protons to H2 under visible light irradiation with obvious advantages. It exhibits a 50-fold improvement in hydrogen production activity and has a broader pH response of photocatalytic H2 production compared with a non-assembled system.

Here is just a brief introduction to this compound(3222-47-7)COA of Formula: C7H7NO2, more information about the compound(6-Methylnicotinic acid) is in the article, you can click the link below.

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, Organic Chemistry Frontiers called Functionalisation of esters via 1,3-chelation using NaOtBu: mechanistic investigations and synthetic applications, Author is Yang, Hye Sung; Macha, Lingamurthy; Ha, Hyun-Joon; Yang, Jung Woon, which mentions a compound: 3222-47-7, SMILESS is O=C(O)C1=CN=C(C)C=C1, Molecular C7H7NO2, Recommanded Product: 3222-47-7.

For the first time, both 1,3-chelation and the formation of a tetrahedral intermediate were confirmed as the key factors for the unusual nucleophilic behavior of a metal t-butoxide in a transesterification reaction. NMR and real-time IR spectroscopies and deuterium-labeling experiments were used for the mechanistic investigation. Based on a pivotal point in the mechanistic understanding of the action of t-butoxide anion, several uncovering reactions such as direct access to value-added chiral α-amino acid t-Bu ester with almost complete retention of optical purity via elaborative transesterification, non-hydrolytic deesterification of esters, and selective bond cleavage of 3-benzoyloxazolidin-2-ones, were successfully achieved.

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

Application of 3222-47-7. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 6-Methylnicotinic acid, is researched, Molecular C7H7NO2, CAS is 3222-47-7, about Escaping from flatland: Substituted bridged pyrrolidine fragments with inherent three-dimensional character. Author is Cox, Brian; Zdorichenko, Victor; Cox, Philip B.; Booker-Milburn, Kevin I.; Paumier, Romain; Elliott, Luke D.; Robertson-Ralph, Michael; Bloomfield, Graham.

The pressure to deliver new medicines to the patient continues to grow along with increases in compound failure rate, thus putting the current R&D model at risk. Anal. has shown that increasing the three-dimensionality of potential drug candidates decreases the risk of failure and improves binding selectivity and frequency. For this reason many workers have taken a new look at the power of photochem. as a means to generate novel sp3 rich scaffolds for use in drug discovery programs. Here we report the design, synthesis, and computational structural anal. of a series of 2,4-methanoprolines having inherent 3D character (PMI and PBF scores) significantly higher than that of the broader AbbVie Rule of 3 (Ro3) collection.

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

Product Details of 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 Sequencing Groebke-Blackburn-Bienayme and Aza-Michael Addition Reactions: A Modular Strategy for Accessing a Diverse Collection of Constrained Benzoxazepine and Imidazopyrazine Systems. Author is Srinivasulu, Vunnam; Al-Marzooq, Farah; Hamad, Mohamad; Khanfar, Monther A.; Ramanathan, Mani; Soares, Nelson C.; Al-Tel, Taleb H..

A divergent strategy that permitted the access to diversely functionalized benzoxazepinium scaffolds fused to various heterocycles was reported. The described strategy featured a one-pot combination of the Groebke-Blackburn-Bienaym reaction and an aza-Michael addition Me (E)-4-(2-formylphenoxy)but-2-enoates were utilized as central elements in this cascade. These building blocks were reacted with a variety of functionalized amino-azines and tert-Bu isocyanide under ytterbium triflate [Yb(OTf)3] catalysis. The cascade represented a rapid, modular and atom-economic process that leaded to the construction of a diverse collection of constrained benzoxazepinium systems from a wide substrate scope.

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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.COA of Formula: C8H12O4. The article 《Synthesis and antifungal activity of 1,2,3-triazole containing fluconazole analogues》 in relation to this compound, is published in Bioorganic & Medicinal Chemistry Letters. Let’s take a look at the latest research on this compound (cas:86404-63-9).

Fluconazole based mimics containing 1,2,3-triazole were designed and synthesized as antifungal agents. Their antifungal activities were evaluated in vitro by measuring the minimal inhibitory concentrations (MICs). Three compounds were found to be more potent against Candida fungal pathogens than control drugs fluconazole and amphotericin B. The studies presented here provide structural modification of fluconazole to give 1,2,3-triazole containing mols. Furthermore, these mols. were evaluated in vivo against Candida albicans i.v. challenge in Swiss mice and antiproliferative activities were tested against human hepatocellular carcinoma Hep3B and human epithelial carcinoma A431. It was found that compound I resulted in 97.4% reduction in fungal load in mice and did not show any profound proliferative effect at lower dose (0.001 mg/mL).

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

Cox, Brian; Duffy, James; Zdorichenko, Victor; Bellanger, Corentin; Hurcum, Jessica; Laleu, Benoit; Booker-Milburn, Kevin I.; Elliott, Luke D.; Robertson-Ralph, Michael; Swain, Christopher J.; Bishop, Stephen J.; Hallyburton, Irene; Anderson, Mark published the article 《Escaping from Flatland: Antimalarial Activity of sp3-Rich Bridged Pyrrolidine Derivatives》. Keywords: pyrrolidine preparation antimalarial activity.They researched the compound: 6-Methylnicotinic acid( cas:3222-47-7 ).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:3222-47-7) here.

Synthetic photochem. to generate novel sp3-rich scaffolds and report the design, synthesis, and biol. testing of a diverse series of amides based on the 1-(amino-methyl)-2-benzyl-2-aza-bicyclo[2.1.1]hexane scaffold was utilized . Preliminary antimalarial screening of the library provided promising compounds with activity in the 1-5μM range with an enhanced hit rate. Further evaluation (solubility, drug metabolism and pharmacokinetics (DMPK), and toxicity) of a selected compound (9) suggested that this series represents an excellent opportunity for further optimization with the framework offering multiple opportunities for the addition of uniquely vectorally positioned extra functionality.

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