Day: October 17, 2022

SDS of cas: 288-36-8In 2019 ,《Electrophotocatalysis with a trisaminocyclopropenium radical dication》 appeared in Angewandte Chemie, International Edition. The author of the article were Huang, He; Strater, Zack M.; Rauch, Michael; Shee, James; Sisto, Thomas J.; Nuckolls, Colin; Lambert, Tristan H.. The article conveys some information:

Visible-light photocatalysis and electrocatalysis are two powerful strategies for the promotion of chem. reactions. Here, these two modalities are combined in an electrophotocatalytic oxidation platform. This chem. employs a trisaminocyclopropenium (TAC) ion catalyst, which is electrochem. oxidized to form a cyclopropenium radical dication intermediate. The radical dication undergoes photoexcitation with visible light to produce an excited-state species with oxidizing power (3.33 V vs. SCE) sufficient to oxidize benzene and halogenated benzenes via single-electron transfer (SET), resulting in C-H/N-H coupling with azoles. A rationale for the strongly oxidizing behavior of the photoexcited species is provided, while the stability of the catalyst is rationalized by a particular conformation of the cis-2,6-dimethylpiperidine moieties. In the part of experimental materials, we found many familiar compounds, such as 1H-1,2,3-Triazole(cas: 288-36-8SDS of cas: 288-36-8)

1H-1,2,3-Triazole(cas: 288-36-8) belongs to triazoles. Triazoles are an important group of nitrogen-containing five-membered heterocyclic scaffolds. Triazoles are core structures of several drugs and pharmaceutical agents. Triazole derivatives possess antimicrobial, antiparasitic, antidiabetic, analgesic, and anti-inflammatory properties SDS of cas: 288-36-8

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

Formula: C2H3N3In 2019 ,《1,2,3-Triazole-containing hybrids as leads in medicinal chemistry: A recent overview》 appeared in Bioorganic & Medicinal Chemistry. The author of the article were Bozorov, Khurshed; Zhao, Jiangyu; Aisa, Haji A.. The article conveys some information:

A review. The 1,2,3-triazole ring is a major pharmacophore system among nitrogen-containing heterocycles. These five-membered heterocyclic motifs with three nitrogen heteroatoms can be prepared easily using ‘click’ chem. with copper- or ruthenium-catalyzed azide-alkyne cycloaddition reactions. Recently, the ‘linker’ property of 1,2,3-triazoles was demonstrated, and a novel class of 1,2,3-triazole-containing hybrids and conjugates was synthesized and evaluated as lead compounds for diverse biol. targets. These lead compounds have been demonstrated as anticancer, antimicrobial, anti-tubercular, antiviral, antidiabetic, antimalarial, anti-leishmanial, and neuroprotective agents. The present review summarises advances in lead compounds of 1,2,3-triazole-containing hybrids, conjugates, and their related heterocycles in medicinal chem. published in 2018. This review will be useful to scientists in research fields of organic synthesis, medicinal chem., phytochem., and pharmacol. After reading the article, we found that the author used 1H-1,2,3-Triazole(cas: 288-36-8Formula: C2H3N3)

1H-1,2,3-Triazole(cas: 288-36-8) belongs to triazoles. Triazoles are an important group of nitrogen-containing five-membered heterocyclic scaffolds. Triazoles are core structures of several drugs and pharmaceutical agents. Triazole derivatives possess antimicrobial, antiparasitic, antidiabetic, analgesic, and anti-inflammatory properties Formula: C2H3N3

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

Synthetic Route of C2H3N3In 2020 ,《Precise Preparation of a High-Purity Key Intermediate of Tazobactam》 was published in Organic Process Research & Development. The article was written by Zhou, Yanan; Wu, Chengjun; Ma, Hongzhi; Chen, Jianchao; Sun, Tiemin. The article contains the following contents:

In situ IR was used to precisely prepare high-purity diphenylmethyl 6α-bromopenicillanate 8 (VIII), a key intermediate of tazobactam (I). 8 Was obtained when 6α-bromopenicillanic acid 2 (II) reacted with diphenyldiazomethane (DDM). 2 Is unstable and must therefore react immediately with DDM upon preparation DDM is also unstable. As DDM decomposes rapidly upon preparation, the DDM content cannot be precisely determined using high-performance liquid chromatog. (HPLC) or gas chromatog. (GC). Therefore, good yield and purity are difficult to obtain, resulting in large batch-to-batch variations (yield 69.3-82.8%, purity 89.8-98.4%) for 8. The developed preparation method for 8 involved the use of in situ IR to monitor the reaction process and achieved good results (82.7-83.1% yield and 97.3-98.5% purity). This method was also used to prepare the key intermediate for the synthesis of cephalosporin derivatives, which have high industrial value. In the experiment, the researchers used 1H-1,2,3-Triazole(cas: 288-36-8Synthetic Route of C2H3N3)

1H-1,2,3-Triazole(cas: 288-36-8) belongs to triazoles. Triazoles are an important group of nitrogen-containing five-membered heterocyclic scaffolds. Triazoles are core structures of several drugs and pharmaceutical agents. Triazole derivatives possess antimicrobial, antiparasitic, antidiabetic, analgesic, and anti-inflammatory properties Synthetic Route of C2H3N3

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

Reference of 6-Bromo-5-methyl[1,2,4]triazolo[1,5-a]pyridineOn May 3, 2019 ,《Preparation of 1,5-Dihydropyrazolo[3′,4′:5,6]pyrano[3,4-b]pyridines via a Microwave-Assisted, Palladium-Catalyzed Regioselective C-H Heteroarylation of Electron-Rich Pyrazoles》 appeared in Journal of Organic Chemistry. The author of the article were Garrison, Aaron T.; Childress, Elizabeth S.; Davis, Dexter C.; Lindsley, Craig W.. The article conveys some information:

In the presence of Pd2(dba)3 and SPhos under microwave irradiation, bromopyridinylmethoypyrazoles such as I underwent regioselective arylation to yield dihydropyrazolopyranopyridines such as II; pyrazolobenzopyrans, pyrazolobenzothiopyrans, and two pyrazolonaphthyridinones were prepared using the same method. The cyclization precursors were prepared in two steps from methylpyridines or pyridinemethanols and pyrazolols. In the experimental materials used by the author, we found 6-Bromo-5-methyl[1,2,4]triazolo[1,5-a]pyridine(cas: 746668-59-7Reference of 6-Bromo-5-methyl[1,2,4]triazolo[1,5-a]pyridine)

6-Bromo-5-methyl[1,2,4]triazolo[1,5-a]pyridine(cas: 746668-59-7) belongs to triazoles. The triazole ring is a relatively stable functional group, and the triazole bond can be used for a variety of applications, such as replacing the phosphate backbone of DNA.Reference of 6-Bromo-5-methyl[1,2,4]triazolo[1,5-a]pyridine

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

In 2016,Narayanan, Sanju; Maitra, Rangan; Deschamps, Jeffery R.; Bortoff, Katherine; Thomas, James B.; Zhang, Yanyan; Warner, Keith; Vasukuttan, Vineetha; Decker, Ann; Runyon, Scott P. published 《Discovery of a novel small molecule agonist scaffold for the APJ receptor》.Bioorganic & Medicinal Chemistry published the findings.Category: triazoles The information in the text is summarized as follows:

The apelinergic system includes a series of endogenous peptides apelin, ELABELA/TODDLER and their 7-transmembrane G-protein coupled apelin receptor (APJ, AGTRL-1, APLNR). The APJ receptor is an attractive therapeutic target because of its involvement in cardiovascular diseases and potentially other disorders including liver fibrosis, obesity, diabetes, and neuroprotection. To date, pharmacol. characterization of the APJ receptor has been limited due to the lack of small mol. functional agonists or antagonists. Through focused screening we identified a drug-like small mol. agonist hit 1 with a functional EC50 value of 21.5 ± 5 μM and binding affinity (Ki) of 5.2 ± 0.5 μM. Initial structure-activity studies afforded compound 22 having a 27-fold enhancement in potency and the first sub-micromolar full agonist with an EC50 value of 800 ± 0.1 nM and Ki of 1.3 ± 0.3 μM. Preliminary SAR, synthetic methodol., and in vitro pharmacol. characterization indicate this scaffold will serve as a favorable starting point for further refinement of APJ potency and selectivity. The experimental part of the paper was very detailed, including the reaction process of ((1H-Benzo[d][1,2,3]triazol-1-yl)oxy)tris(dimethylamino)phosphonium hexafluorophosphate(V)(cas: 56602-33-6Category: triazoles)

((1H-Benzo[d][1,2,3]triazol-1-yl)oxy)tris(dimethylamino)phosphonium hexafluorophosphate(V)(cas: 56602-33-6) is a peptide coupling reagent. Can be used in the preparation of phenyl esters of amino acids which have been shown to be valuable as blocked derivatives of amino acids in the field of peptide synthesis.Category: triazoles

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

The author of 《Imaging of chemotherapy-induced acute cardiotoxicity with 18F-labeled lipophilic cations》 were McCluskey, Stuart P.; Haslop, Anna; Coello, Christopher; Gunn, Roger N.; Tate, Edward W.; Southworth, Richard; Plisson, Christophe; Long, Nicholas J.; Wells, Lisa A.. And the article was published in Journal of Nuclear Medicine in 2019. Safety of Tris((1-benzyl-1H-1,2,3-triazol-4-yl)methyl)amine The author mentioned the following in the article:

Many chemotherapy agents are toxic to the heart, such that increasing numbers of cancer survivors are now living with the potentially lethal cardiovascular consequences of their treatment. Earlier and more sensitive detection of chemotherapy-induced cardiotoxicity may allow improved treatment strategies and increase long-term survival. Lipophilic cation PET tracers may be suitable for early detection of cardiotoxicity. This study aimed to evaluate an 18F-labeled lipophilic phosphonium cation, [1-(2-18F-fluoroethyl),1H[1,2,3]triazole-4-ethylene]triphenylphosphonium bromide (18F-MitoPhos), as a cardiac imaging agent, comparing it with leading PET and SPECT lipophilic cationic tracers before further assessing its potential for imaging cardiotoxicity in an acute doxorubicin model. Cardiac uptake and response to decreased mitochondrial membrane potential of 18F-MitoPhos and 99mTc-sestamibi were tested in isolated perfused rat hearts. Baseline pharmacokinetic profiles of 18F-MitoPhos and 18F-fluorobenzyltriphenylphosphonium and their response to acute doxorubicin-induced cardiotoxicity were assessed in rats in vivo (10, 15, or 20 mg of doxorubicin per kg, i.v., 48 h beforehand). Cardiac retention of 18F-MitoPhos was more than double that of 99mTc-sestamibi in isolated perfused rat hearts. A favorable biodistribution of 18F-MitoPhos in vivo was observed, with heart-to-tissue ratios of 304 ± 186, 11.2 ± 1.2, and 3.8 ± 0.6 for plasma, liver, and lung, resp. (60 min). A significant dose-dependent loss of cardiac retention of 18F-MitoPhos was observed on doxorubicin treatment, with average cardiac SUV from 30 to 60 min (mean ± SD) decreasing from 3.5 ± 0.5 (control) to 1.8 ± 0.1 (doxorubicin, 20 mg/kg). Other assessed biomarkers showed no alterations. 18F-MitoPhos showed pharmacokinetic parameters suitable for cardiac imaging. A significant dose response of cardiac uptake to doxorubicin treatment was observed before detectable biomarker alterations. 18F-MitoPhos is therefore a promising tracer for imaging chemotherapy-induced cardiotoxicity. To our knowledge, this is the first demonstration of radiolabeled lipophilic cations being used for the PET imaging of chemotherapy-induced cardiotoxicity and indicates the potential application of these compounds in this area. In the part of experimental materials, we found many familiar compounds, such as Tris((1-benzyl-1H-1,2,3-triazol-4-yl)methyl)amine(cas: 510758-28-8Safety of Tris((1-benzyl-1H-1,2,3-triazol-4-yl)methyl)amine)

Tris((1-benzyl-1H-1,2,3-triazol-4-yl)methyl)amine(cas: 510758-28-8) can stabilizes Cu(I) towards disproportionation and oxidation thus enhancing its catalytic effect in the azide-acetylene cycloaddition.Safety of Tris((1-benzyl-1H-1,2,3-triazol-4-yl)methyl)amine

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

SDS of cas: 288-36-8In 2021 ,《Naphthoquinones and Derivatives for Chemotherapy: Perspectives and Limitations of their Anti-trypanosomatids Activities》 appeared in Current Pharmaceutical Design. The author of the article were Dantas-Pereira, Luiza; Cunha-Junior, Edezio F.; Andrade-Neto, Valter V.; Bower, John F.; Jardim, Guilherme A. M.; da Silva, Eufranio N. Junior; Torres-Santos, Eduardo C.; Menna-Barreto, Rubem F. S.. The article conveys some information:

A review. Chagas disease, Sleeping sickness and Leishmaniasis, caused by trypanosomatids Trypanosoma cruzi, Trypanosoma brucei and Leishmania spp., resp., are considered neglected tropical diseases, and they especially affect impoverished populations in the developing world. The available chemotherapies are very limited, and a search for alternatives is still necessary. In folk medicine, natural naphthoquinones have been employed for the treatment of a great variety of illnesses, including parasitic infections. This review is focused on the anti-trypanosomatid activity and mechanistic anal. of naphthoquinones and derivatives Among all the series of derivatives tested in vitro, naphthoquinone-derived 1,2,3-triazoles were very active on T. cruzi infective forms in blood bank conditions, as well as in amastigotes of Leishmania spp. naphthoquinones containing a CF3 on a Ph amine ring inhibited T. brucei proliferation in the nanomolar range, and naphthopterocarpanquinones stood out for their activity on a range of Leishmania species. Some of these compounds showed a promising selectivity index (SI) (30 to 1900), supporting further anal. in animal models. Indeed, high toxicity to the host and inactivation by blood components are crucial obstacles to be overcome to use naphthoquinones and/or their derivatives for chemotherapy. Multidisciplinary initiatives embracing medicinal chem., bioinformatics, biochem., and mol. and cellular biol. need to be encouraged to allow the optimization of these compounds Large scale automated tests are pivotal for the efficiency of the screening step, and subsequent evaluation of both the mechanism of action in vitro and pharmacokinetics in vivo is essential for the development of a novel, specific and safe derivative, minimizing adverse effects. In the experiment, the researchers used 1H-1,2,3-Triazole(cas: 288-36-8SDS of cas: 288-36-8)

1H-1,2,3-Triazole(cas: 288-36-8) belongs to triazoles. Triazoles are an important group of nitrogen-containing five-membered heterocyclic scaffolds. Triazoles are core structures of several drugs and pharmaceutical agents. Triazole derivatives possess antimicrobial, antiparasitic, antidiabetic, analgesic, and anti-inflammatory properties SDS of cas: 288-36-8

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

Recommanded Product: 510758-28-8In 2020 ,《Alkynylated and Dendronized 5-Aza-7-deazaguanine Nucleosides: Cross-Coupling with Tripropargylamine and Linear Alkynes, Click Functionalization, and Fluorescence of Pyrene Adducts》 was published in Journal of Organic Chemistry. The article was written by Kondhare, Dasharath; Zhang, Aigui; Leonard, Peter; Seela, Frank. The article contains the following contents:

The change of the recognition face of 5-aza-7-deazaguanine bridgehead nucleosides with respect to purine nucleosides permits the construction of new purine-purine or purine-pyrimidine base pairs in DNA and RNA. Clickable derivatives of 5-aza-7-deazaguanine were synthesized by introducing ethynyl, 1,7-octadiynyl, and tripropargylamino side chains in the 7-position of the 5-aza-7-deazapurine moiety by Sonogashira cross-coupling. Click reactions were performed with 1-azidomethylpyrene by the copper-catalyzed azide-alkyne cycloaddition The copper(I)-catalyzed click reaction on the tripropargylamino nucleoside was significantly faster and higher yielding than that for nucleosides carrying linear alkynyl chains. Also, this reaction could be performed with copper(II) as the catalyst. An autocatalyzed cycle was suggested in which the click product acts as a catalyst. Pyrene click adducts of linear alkynylated nucleosides showed pyrene monomer emission, while tripropargylamino adducts showed monomer and excimer fluorescence. The fluorescence intensities of the 5-aza-7-deazaguanine nucleosides were higher than those of their 7-deazaguanine counterparts. The reported clickable nucleosides can be utilized to functionalize or to cross-link monomeric nucleosides or DNA for diagnostic or imaging purposes and other applications in nucleic acid chem. and biotechnol. In addition to this study using Tris((1-benzyl-1H-1,2,3-triazol-4-yl)methyl)amine, there are many other studies that have used Tris((1-benzyl-1H-1,2,3-triazol-4-yl)methyl)amine(cas: 510758-28-8Recommanded Product: 510758-28-8) was used in this study.

Tris((1-benzyl-1H-1,2,3-triazol-4-yl)methyl)amine(cas: 510758-28-8) is a polytriazolylamine ligand which stabilizes Cu(I) towards disproportionation and oxidation thus enhancing its catalytic effect in the azide-acetylene cycloaddition.Recommanded Product: 510758-28-8

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

Quality Control of ((1H-Benzo[d][1,2,3]triazol-1-yl)oxy)tris(dimethylamino)phosphonium hexafluorophosphate(V)In 2015 ,《Tyrosine kinase 2-mediated signal transduction in T lymphocytes is blocked by pharmacological stabilization of its pseudokinase domain》 was published in Journal of Biological Chemistry. The article was written by Tokarski, John S.; Zupa-Fernandez, Adriana; Tredup, Jeffrey A.; Pike, Kristen; Chang, Chieh Ying; Xie, Dianlin; Cheng, Lihong; Pedicord, Donna; Muckelbauer, Jodi; Johnson, Stephen R.; Wu, Sophie; Edavettal, Suzanne C.; Hong, Yang; Witmer, Mark R.; Elkin, Lisa L.; Blat, Yuval; Pitts, William J.; Weinstein, David S.; Burke, James R.. The article contains the following contents:

Inhibition of signal transduction downstream of the IL-23 receptor represents an intriguing approach to the treatment of autoimmunity. Using a chemogenomics approach marrying kinome-wide inhibitory profiles of a compound library with the cellular activity against an IL-23-stimulated transcriptional response in T lymphocytes, a class of inhibitors was identified that bind to and stabilize the pseudokinase domain of the Janus kinase tyrosine kinase 2 (Tyk2), resulting in blockade of receptor-mediated activation of the adjacent catalytic domain. These Tyk2 pseudokinase domain stabilizers were also shown to inhibit Tyk2-dependent signaling through the Type I interferon receptor but not Tyk2-independent signaling and transcriptional cellular assays, including stimulation through the receptors for IL-2 (JAK1- and JAK3-dependent) and thrombopoietin (JAK2-dependent), demonstrating the high functional selectivity of this approach. A crystal structure of the pseudokinase domain liganded with a representative example showed the compound bound to a site analogous to the ATP-binding site in catalytic kinases with features consistent with high ligand selectivity. The results support a model where the pseudokinase domain regulates activation of the catalytic domain by forming receptor-regulated inhibitory interactions. Tyk2 pseudokinase stabilizers, therefore, represent a novel approach to the design of potent and selective agents for the treatment of autoimmunity. The experimental part of the paper was very detailed, including the reaction process of ((1H-Benzo[d][1,2,3]triazol-1-yl)oxy)tris(dimethylamino)phosphonium hexafluorophosphate(V)(cas: 56602-33-6Quality Control of ((1H-Benzo[d][1,2,3]triazol-1-yl)oxy)tris(dimethylamino)phosphonium hexafluorophosphate(V))

((1H-Benzo[d][1,2,3]triazol-1-yl)oxy)tris(dimethylamino)phosphonium hexafluorophosphate(V)(cas: 56602-33-6) is used as a reagent for peptide coupling, lactonization, selective esterification, amidation of alfa amino acids without racemization and synthesis of magnolamide for antioxidative activity and catalyst for 9-acridinecaroboxamide derivative. It is also used as a precursor for the synthesis of phenyl esters of amino acids.Quality Control of ((1H-Benzo[d][1,2,3]triazol-1-yl)oxy)tris(dimethylamino)phosphonium hexafluorophosphate(V)

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

《3D Printing of Supramolecular Polymers: Impact of Nanoparticles and Phase Separation on Printability》 was written by Rupp, Harald; Doehler, Diana; Hilgeroth, Philipp; Mahmood, Nasir; Beiner, Mario; Binder, Wolfgang H.. Category: triazolesThis research focused onthree dimensional printing supramol polymer nanoparticle; 3D printing; extrusion printing; melt rheology; supramolecular polymers. The article conveys some information:

3D printing of linear and three-arm star supramol. polymers with attached hydrogen bonds and their nanocomposites is reported. The concept is based on hydrogen-bonded supramol. polymers, known to form nano-sized micellar clusters. Printability is based on reversible thermal- and shear-induced dissociation of a supramol. polymer network, which generates stable and self-supported structures after printing, as checked via melt-rheol. and X-ray scattering. The linear and three-arm star poly(isobutylene)s PIB-B2 (Mn = 8500 g mol -1), PIB-B3 (Mn = 16 000 g mol -1), and linear poly(ethylene glycol)s PEG-B2 (Mn = 900 g mol-1, 8500 g mol -1) are prepared and then probed by melt-rheol. to adjust the viscosity to address the proper printing window. The supramol. PIB polymers show a rubber-like behavior and are able to form self-supported 3D printed objects at room temperature and below, reaching polymer strand diameters down to 200-300 μm. Nanocomposites of PIB-B2 with silica nanoparticles (12 nm, 5-15 wt%) are generated, in turn leading to an improvement of their shape persistence. A blend of the linear polymer PIB-B2 and the three-arm star polymer PIB-B3 (ratio ≈ 3/1 mol) reaches an even higher structural stability, able to build free-standing structures. In addition to this study using Tris((1-benzyl-1H-1,2,3-triazol-4-yl)methyl)amine, there are many other studies that have used Tris((1-benzyl-1H-1,2,3-triazol-4-yl)methyl)amine(cas: 510758-28-8Category: triazoles) was used in this study.

Tris((1-benzyl-1H-1,2,3-triazol-4-yl)methyl)amine(cas: 510758-28-8) is a polytriazolylamine ligand which stabilizes Cu(I) towards disproportionation and oxidation thus enhancing its catalytic effect in the azide-acetylene cycloaddition.Category: triazoles

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