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Showing 1 to 12 of 913 entries
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1, 2, 3-Triazoles as peptide bond isosteres: synthesis and biological evaluation of cyclotetrapeptide mimics

evaluation

Speijer D.
GSID: rBUDBjPhV3oJ
VD Bock, D Speijer, H Hiemstra… - Organic & biomolecular …, 2007 - pubs.rsc.org

Since the discovery of CuI-catalysed click chemistry, the field of peptidomimetics has expanded to include 1,4-connected 1,2,3-triazoles as useful peptide bond isosteres. Here, we report the synthesis of triazole-containing analogues of the naturally occurring tyrosinase inhibitor …

Synthesis of some new 1, 2, 4-triazoles, their Mannich and Schiff bases and evaluation of their antimicrobial activities

evaluation

Bayrak H, Demirbas A, Karaoglu SA.
GSID: 1cXOO7CNNWIJ
H Bayrak, A Demirbas, SA Karaoglu… - European journal of …, 2009 - Elsevier

4-Phenyl-5-pyridin-4-yl-4H-1,2,4-triazole-3-thiol (3) was obtained in basic media via the formation of 2-isonicotinoyl-N-phenylhydrazinecarbothioamide (2), and converted to some alkylated derivatives (4a,b) and Mannich base derivatives (5a–c). 2-[(4-Phenyl-5-pyridin-4-yl-4H-1,…

Synthesis of some new 1, 2, 4-triazoles starting from isonicotinic acid hydrazide and evaluation of their antimicrobial activities

evaluation

Bayrak H, Demirbas A, Demirbas N.
GSID: JDTlwllibDMJ
H Bayrak, A Demirbas, N Demirbas… - European journal of …, 2009 - Elsevier

5-Pyridin-4-yl-1,3,4-oxadiazole-2-thiol (2) was obtained from the reaction of isonicotinic acid hydrazide with carbon disulfide in basic media and converted into 4-amino-5-pyridin-4-yl-4H-1,2,4-triazole-3-thiol (5) by the treatment with hydrazine hydrate. The synthesis of 3 and 6 …

Quantifying chloride binding and salt extraction with poly(methyl methacrylate) copolymers bearing aryl-triazoles as anion receptor side chains.

Chemical communications (Cambridge, England)

McDonald KP, Qiao B, Twum EB, Lee S, Gamache PJ, Chen CH, Yi Y, Flood AH.
PMID: 25233076
Chem Commun (Camb). 2014 Nov 11;50(87):13285-8. doi: 10.1039/c4cc03362k. Epub 2014 Sep 18.

Copolymers of methyl methacrylate and aryl-triazole based anion receptors were quantitatively analyzed. Transfer of structural features (1 : 1 and 2 : 1 complexes) and Cl(-) affinities from the parent receptors was demonstrated. Cl(-)-induced cross-linking changed the polymer's hydrodynamic...

Profile of isavuconazole and its potential in the treatment of severe invasive fungal infections.

Infection and drug resistance

Falci DR, Pasqualotto AC.
PMID: 24187505
Infect Drug Resist. 2013 Oct 22;6:163-74. doi: 10.2147/IDR.S51340.

The triazole class of antifungal drugs comprises first-line agents for the treatment of several invasive fungal diseases. Isavuconazole is a novel broad-spectrum triazole agent. Here we summarize its characteristics and compare it with the currently available antifungal agents. Isavuconazole...

Exogenously Applied Plant Growth Regulators Enhance the Morpho-Physiological Growth and Yield of Rice under High Temperature.

Frontiers in plant science

Fahad S, Hussain S, Saud S, Hassan S, Ihsan Z, Shah AN, Wu C, Yousaf M, Nasim W, Alharby H, Alghabari F, Huang J.
PMID: 27625658
Front Plant Sci. 2016 Aug 30;7:1250. doi: 10.3389/fpls.2016.01250. eCollection 2016.

A 2-year experiment was conducted to ascertain the effects of exogenously applied plant growth regulators (PGR) on rice growth and yield attributes under high day (HDT) and high night temperature (HNT). Two rice cultivars (IR-64 and Huanghuazhan) were subjected...

From 1-Sulfonyl-4-aryl-1,2,3-triazoles to 1-Allenyl-5-aryl-1,2,3-triazoles.

The Journal of organic chemistry

Huang K, Sheng G, Lu P, Wang Y.
PMID: 28474887
J Org Chem. 2017 May 19;82(10):5294-5300. doi: 10.1021/acs.joc.7b00627. Epub 2017 May 10.

An efficient and highly regioselective synthesis of 1-allenyl-5-aryl-1,2,3-triazoles from 1-sulfonyl-4-aryl-1,2,3-triazoles is disclosed. 1-Sulfonyl-4-aryl-1,2,3-triazoles reacted with propargylic alcohols in the presence of trifluoroboron etherate to furnish 1-allenyl-5-aryl-1,2,3-triazoles. When secondary alcohols were used as substrate, the outcome of the reaction was...

Bench-Stable 5-Stannyl Triazoles by a Copper(I)-Catalyzed Interrupted Click Reaction: Bridge to Trifluoromethyltriazoles and Trifluoromethylthiotriazoles.

Organic letters

Wei F, Zhou T, Ma Y, Tung CH, Xu Z.
PMID: 28387509
Org Lett. 2017 Apr 21;19(8):2098-2101. doi: 10.1021/acs.orglett.7b00701. Epub 2017 Apr 07.

Metalated triazoles are the key reactive intermediate of the current click reaction (CuAAC). Bench-stable 5-stannyl triazoles are obtained by a copper-catalyzed interrupted click reaction of easily available terminal alkynes. Subsequent palladium-catalyzed cross-coupling reactions, electrophilic trifluoromethylthiolation and trifluoromethylation, generate diverse...

Rh(II)-Catalyzed Transannulation of N-Sulfonyl-1,2,3-Triazoles with 2,1-Benzisoxazoles or 1,2-Benzisoxazoles.

Organic letters

Lei X, Gao M, Tang Y.
PMID: 27672715
Org Lett. 2016 Oct 07;18(19):4990-4993. doi: 10.1021/acs.orglett.6b02454. Epub 2016 Sep 27.

A Rh(II)-catalyzed transannulation of N-sulfonyl-1,2,3-triazoles with 2,1-benzisoxazoles has been developed, which affords an efficient method for the synthesis of quinazoline derivatives. The transformation represents an unprecedented example which utilizes N-sulfonyl-1,2,3-triazole as an aza-[2C]-component in cycloadditions. Meanwhile, a Rh(II)-catalyzed formal...

N(2)-Selective Iodofunctionalization of Olefins with NH-1,2,3-Triazoles to provide N(2)-Alkyl-Substituted 1,2,3-Triazoles.

The Journal of organic chemistry

Zhu LL, Xu XQ, Shi JW, Chen BL, Chen Z.
PMID: 27031001
J Org Chem. 2016 May 06;81(9):3568-75. doi: 10.1021/acs.joc.6b00185. Epub 2016 Apr 08.

A new method was developed to synthesize N(2)-alkyl-substituted 1,2,3-triazole through N-iodosuccinimide (NIS) mediated iodofuctionalization reaction of the alkene group with bi-, mono-, and unsubstituted NH-1,2,3-triazoles. The favored N-1 type hydrogen bond between the iodonium ion intermediate and 1,2,3-triazole was...

Role of isavuconazole in the treatment of invasive fungal infections.

Therapeutics and clinical risk management

Wilson DT, Dimondi VP, Johnson SW, Jones TM, Drew RH.
PMID: 27536124
Ther Clin Risk Manag. 2016 Aug 03;12:1197-206. doi: 10.2147/TCRM.S90335. eCollection 2016.

Despite recent advances in both diagnosis and prevention, the incidence of invasive fungal infections continues to rise. Available antifungal agents to treat invasive fungal infections include polyenes, triazoles, and echinocandins. Unfortunately, individual agents within each class may be limited...

Neutral iodotriazoles as scaffolds for stable halogen-bonded assemblies in solution.

Chemical science

Maugeri L, Asencio-Hernández J, Lébl T, Cordes DB, Slawin AMZ, Delsuc MA, Philp D.
PMID: 28451098
Chem Sci. 2016 Oct 01;7(10):6422-6428. doi: 10.1039/c6sc01974a. Epub 2016 Jun 23.

The halogen bond (XB) donor properties of neutral 1,4-diaryl-5-iodo-1,2,3-triazoles are explored using a combination of computational and experimental results and are shown to be competitive in halogen bonding efficiency with the classic pentafluoroiodobenzene XB donor. The S

Showing 1 to 12 of 913 entries