Category: Triazoles

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: 6-Methylnicotinic acid, is researched, Molecular C7H7NO2, CAS is 3222-47-7, about Solvent-Dependent Chemoselective and Stereoselective Approach to Synthesis of Spiro-γ-Lactams with Potent Anticancer Activity.Recommanded Product: 3222-47-7.

Chemoselective approaches were developed for derivatizing diastereoselective chromanone spiro-γ-lactams through the Michael-type addition by using amide as a weak nucleophile to construct the spiro-carbon center under basic conditions. To expand the scope of this post-Ugi cascade reaction, a new series of oxidized chromone derivatives Iand II [R1 = H, Me, Cl, etc.; R2 = Ph, 2-thienyl, 1,3-benzodioxol-5-yl, etc.; R3 = 2,6-dimethylphenyl, 4-methoxyphenyl, 1-naphthyl, etc.] was synthesized by altering solvent from EtOH to DMF. Compounds II [R1 = H; R2 = 1,3-benzodioxol-5-yl, 4-nitrophenyl; R3 = 2,6-dimethylphenyl] which could be synthesized in one day, demonstrated comparable anticancer activities with legendary anticancer drug paclitaxel in the PANC and U87 cell lines. This methodol. offers a new approach to construct spiro-carbon centers with functionalized chromanones or chromones under mild reaction conditions.

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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, Organic Process Research & Development called Process Development of Voriconazole: A Novel Broad-Spectrum Triazole Antifungal Agent, Author is Butters, Mike; Ebbs, Julie; Green, Stuart P.; MacRae, Julie; Morland, Matthew C.; Murtiashaw, Charles W.; Pettman, Alan J., which mentions a compound: 86404-63-9, SMILESS is FC1=CC=C(C(CN2N=CN=C2)=O)C(F)=C1, Molecular C10H7F2N3O, Name: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone.

In the synthesis of (2R,3S)-2-(2,4-difluorophenyl)-3-(5-fluoro-4-pyrimidinyl)-1-(1H-1,2,4-triazol-1-yl)-2-butanol (voriconazole), the relative stereochem. is set in the addition of a 4-(1-metalloethyl)-5-fluoropyrimidine derivative to 1-(2,4-difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)-1-ethanone. The diastereocontrol of this reaction has been examined by variation of pyrimidine substitution pattern and by changes in the metalation and reaction conditions. Excellent diastereoselection (12:1) is obtained using an organozinc derivative of 6-(1-bromoethyl)-4-chloro-5-fluoropyrimidine. After removal of the chlorine from the pyrimidine ring, the absolute stereochem. of voriconazole is established via a diastereomeric salt resolution process using (1R)-10-camphorsulfonic acid. Synthetic routes to the pyrimidine partner have also been evaluated. The initial six-step development route from 5-fluorouracil has been superseded by a four-step synthesis involving fluorination of Me 3-oxopentanoate and cyclization with formamidine acetate.

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

In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Searching for new agents active against Candida albicans biofilm: A series of indole derivatives, design, synthesis and biological evaluation, published in 2019-03-01, which mentions a compound: 3222-47-7, mainly applied to indole Candida antibiofilm; Candida albicans biofilm; Galleria mellonella; Indole derivatives, Product Details of 3222-47-7.

Candida albicans biofilm represents a major clin. problem due to its intrinsic tolerance to anti-fungal compounds and it has been highly related to infections in catheterized patients. Few compounds are described as able to inhibit biofilm formation or to interfere with preformed biofilm of C. albicans. Here the authors report the in vitro evaluation of anti-biofilm activity on C. albicans ATCC 10231 of a series of new and already known amine and amide indole derivatives Among the studied compounds, fifteen resulted active on C. albicans ATCC 10231 biofilm, with BMIC50 ≤16 μg/mL. Three of them (7, 23 and 33) showed a selectivity towards mature biofilm and the most active of them was the compound 23 (BMIC50 = 4 μg/mL). On the other hands, two different compounds (21 and 22) were selective towards biofilm formation with BMIC50 values of 8 μg/mL. Otherwise, compounds 16 and 17 resulted active on biofilm formation, with BMIC50 of 8 μg/mL and 2 μg/mL resp., and on mature biofilm with BMIC50 of 2 μg/mL. These two last compounds also showed an interesting activity towards the planktonic cells of C. albicans. A selection of the more active compounds was also evaluated on different C. albicans strains (PMC1042, PMC1083 and ATCC 10261), showing a comparable or higher anti-biofilm activity, especially on mature biofilm. In vivo toxicity studies using the Galleria mellonella larvae, were finally carried out on more active indole derivatives, showing that they are poorly toxic even at the highest concentrations tested (500-1000 μg/mL).

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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: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone( cas:86404-63-9 ) is researched.Recommanded Product: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone.Narayanan, Anjana; Chapman, David R.; Upadhyaya, Subhash P.; Bauer, Ludwig published the article 《Conversion of 4-amino-4H-1,2,4-triazole to 1,3-bis(1H-azol-1-yl)-2-aryl-2-propanols and 1-phenacyl-4-[(benzoyl or 4-toluenesulfonyl)imino]-(1H-1,2,4-triazolium) ylides》 about this compound( cas:86404-63-9 ) in Journal of Heterocyclic Chemistry. Keywords: propanol azolylaryl preparation; fluconazole analog preparation. Let’s learn more about this compound (cas:86404-63-9).

1,3-Bis(1H-azol-1-yl)-2-aryl-2-propanols I (A,B = N, CH; Z = halo) were prepared in a one-pot procedure by reacting 1-aryl-2-(1H-1,2,4-triazol-1-yl)- or 1-aryl-2-(1H-imidazol-1-yl)ethanones with dimethylsulfoxonium methide in the presence of either 1,2,4-triazole or imidazole. The aromatic groups in I were either 4-bromo-, 4-chloro-, 2,4-dichloro- or 2,4-difluorophenyl. 4-Amino-4H-1,2,4-triazole was acylated with either benzoyl or 4-toluenesulfonyl chloride to afford [4-(benzoyl or 4-toluenesulfonyl)amino]-4H-1,2,4-triazole. Subsequent alkylations with 4-bromo- or 4-chlorophenacyl bromide produced 1-(4-bromo- or 4-chlorophenacyl)-4-[(benzoyl- or 4-toluenesulfonyl)amino]-1H-1,2,4-triazolium bromides. Neutralizations of these salts provided the corresponding ylides.

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

COA of Formula: C10H7F2N3O. 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 Spectrodensitometric evaluation and determination of fluconazole and its impurities in pharmaceutical formulations by high performance thin layer chromatography. Author is Ramesh, B.; Narayana, P. Sreeman; Reddy, A. Shiva; Devi, P. Sita.

A quant. densitometric HPTLC method was developed and validated for the determination of fluconazole and its structurally related impurities. The separations were accomplished on silica gel 60 F254 plates using a saturated mixture of butanol: water: acetic acid (8:2:1 volume/volume). UV light facilitated the visualization of the active drug substance fluconazole and impurity-e while impurity-b was visible only when exposed to iodine vapors, as dark brown chromatog. zone. Densitometric quantification was performed at λ = 254nm by reflecting scanning and fluconazole (Rr 0.67 ± 0.02) resolved well from the 2 impurities. The standard fluconazole curve is linear (r = > 0.9995) over a concentration range of 1-6 μg/spot. Recovery from tablet formulation was statistically equal to 100%. The limits of detection and quantification were 0.031 and 0.098 μg/spot resp. The precision of the method with respect to concentration is acceptable with a relative standard deviation of 2%. The proposed method is specific for fluconazole in the presence of its structurally related impurities and proved to be a valuable complimentary method for impurity profiling and quality control.

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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, Research Support, N.I.H., Extramural, Science (Washington, DC, United States) called A tautomeric ligand enables directed C-H hydroxylation with molecular oxygen, Author is Li, Zhen; Wang, Zhen; Chekshin, Nikita; Qian, Shaoqun; Qiao, Jennifer X.; Cheng, Peter T.; Yeung, Kap-Sun; Ewing, William R.; Yu, Jin-Quan, which mentions a compound: 3222-47-7, SMILESS is O=C(O)C1=CN=C(C)C=C1, Molecular C7H7NO2, Electric Literature of C7H7NO2.

Hydroxylation of aryl carbon-hydrogen bonds with transition metal catalysts has proven challenging when oxygen is used as the oxidant. Here, we report a palladium complex bearing a bidentate pyridine/pyridone ligand that efficiently catalyzes this reaction at ring positions adjacent to carboxylic acids. IR, x-ray, and computational anal. support a possible role of ligand tautomerization from mono-anionic (L,X) to neutral (L,L) coordination in the catalytic cycle of aerobic carbon-hydrogen hydroxylation reaction. The conventional site selectivity dictated by heterocycles is overturned by this catalyst, thus allowing late-stage modification of compounds of pharmaceutical interest at previously inaccessible sites.

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

Lei, Jie; He, Liu-Jun; Tang, Dian-Yong; Wen, Jingyuan; Yan, Wei; Li, Hong-yu; Chen, Zhong-Zhu; Xu, Zhi-Gang published an article about the compound: 6-Methylnicotinic acid( cas:3222-47-7,SMILESS:O=C(O)C1=CN=C(C)C=C1 ).Application In Synthesis of 6-Methylnicotinic acid. 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:3222-47-7) through the article.

Chemoselective approaches were developed for derivatizing diastereoselective chromanone spiro-γ-lactams through the Michael-type addition by using amide as a weak nucleophile to construct the spiro-carbon center under basic conditions. To expand the scope of this post-Ugi cascade reaction, a new series of oxidized chromone derivatives Iand II [R1 = H, Me, Cl, etc.; R2 = Ph, 2-thienyl, 1,3-benzodioxol-5-yl, etc.; R3 = 2,6-dimethylphenyl, 4-methoxyphenyl, 1-naphthyl, etc.] was synthesized by altering solvent from EtOH to DMF. Compounds II [R1 = H; R2 = 1,3-benzodioxol-5-yl, 4-nitrophenyl; R3 = 2,6-dimethylphenyl] which could be synthesized in one day, demonstrated comparable anticancer activities with legendary anticancer drug paclitaxel in the PANC and U87 cell lines. This methodol. offers a new approach to construct spiro-carbon centers with functionalized chromanones or chromones under mild reaction conditions.

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

Srinivasulu, Vunnam; Al-Marzooq, Farah; Hamad, Mohamad; Khanfar, Monther A.; Ramanathan, Mani; Soares, Nelson C.; Al-Tel, Taleb H. published the article 《Sequencing Groebke-Blackburn-Bienayme and Aza-Michael Addition Reactions: A Modular Strategy for Accessing a Diverse Collection of Constrained Benzoxazepine and Imidazopyrazine Systems》. Keywords: benzoxazepinium fuse imidazopyridine preparation; thiazoimidazobenzooxazepinium trifluoromethane sulfonate preparation; pyridothiazoimidazooxzazepinoquinolium trifluoromethane sulfonate preparation; imidazopyrazinoimidazothiazole preparation.They researched the compound: 4-(4-Bromophenyl)-5-methylthiazol-2-amine( cas:65705-44-4 ).HPLC of Formula: 65705-44-4. 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.

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

So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Yu, Shichong; Chai, Xiaoyun; Hu, Honggang; Yan, Yongzheng; Guan, Zhongjun; Zou, Yan; Sun, Qingyan; Wu, Qiuye researched the compound: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone( cas:86404-63-9 ).Related Products of 86404-63-9.They published the article 《Synthesis and antifungal evaluation of novel triazole derivatives as inhibitors of cytochrome P450 14α-demethylase》 about this compound( cas:86404-63-9 ) in European Journal of Medicinal Chemistry. Keywords: triazole preparation inhibitor cytochrome P 450 14 alpha demethylase; click reaction triazole preparation antifungal evaluation. We’ll tell you more about this compound (cas:86404-63-9).

A series of 1-(1H-1,2,4-triazol-1-yl)-2-(2,4-difluorophenyl)-3-substituted-2-propanols, which are analogs of fluconazole, have been designed and synthesized as the potential antifungal agents by the click reaction. Click reaction approach toward the synthesis of two sets of novel 1,2,3-triazolyl linked triazole antifungal derivatives was achieved by Cu(I)-catalyzed 1,3-dipolar cycloaddition of propargylated intermediates with substituted benzyl or alkyl azides. The 1,2,3-triazolyl group was inserted into the side chain of the target mol. which can increase the antifungal activity of compounds

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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, Research Support, Non-U.S. Gov’t, Journal of the American Chemical Society called Catalytic Deoxygenative Coupling of Aromatic Esters with Organophosphorus Compounds, Author is Kurosawa, Miki B.; Isshiki, Ryota; Muto, Kei; Yamaguchi, Junichiro, which mentions a compound: 3222-47-7, SMILESS is O=C(O)C1=CN=C(C)C=C1, Molecular C7H7NO2, SDS of cas: 3222-47-7.

We have developed a deoxygenative coupling of aromatic esters with diarylphosphine oxides/dialkyl phosphonates under palladium catalysis. In this reaction, aromatic esters can work as novel benzylation reagents to give the corresponding benzylic phosphorus compounds The key of this reaction is the use of Ph esters, an electron-rich diphosphine as a ligand, and sodium formate as a hydrogen source. Arylcarboxylic acids were also applicable in this reaction using (Boc)2O as an additive. Palladium/dcype worked to activate the acyl C-O bond of the ester and to support the reduction with sodium formate.

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