Tag: 500-600

dsDNA-triggered energy transfer and lanthanide sensitization processes. Luminescent probing of specific A/T sequences was written by Vazquez, Olalla;Sanchez, Mateo I.;Mascarenas, Jose L.;Vazquez, M. Eugenio. And the article was included in Chemical Communications (Cambridge, United Kingdom) in 2010.Application of 156311-83-0 The following contents are mentioned in the article:

Orthogonal attachment of a DOTA[Ln³⁺] complex or a coumarin fluorophore to appropriately functionalized bis-4-aminobenzamidines yields compounds that experience A/T-selective, dsDNA-dependent energy transfer processes, and elicit long wavelength emission of light. This study involved multiple reactions and reactants, such as ((3H-[1,2,3]Triazolo[4,5-b]pyridin-3-yl)oxy)tri(pyrrolidin-1-yl)phosphonium hexafluorophosphate(V) (cas: 156311-83-0Application of 156311-83-0).

((3H-[1,2,3]Triazolo[4,5-b]pyridin-3-yl)oxy)tri(pyrrolidin-1-yl)phosphonium hexafluorophosphate(V) (cas: 156311-83-0) belongs to triazole derivatives. However, triazoles are also useful in bioorthogonal chemistry, because the large number of nitrogen atoms causes triazoles to react similar to azides. Many triazoles have antifungal effects: the triazole antifungal drugs include fluconazole, isavuconazole, itraconazole, voriconazole, pramiconazole, ravuconazole, and posaconazole and triazole plant-protection fungicides include epoxiconazole, triadimenol, myclobutanil, propiconazole, prothioconazole, metconazole, cyproconazole, tebuconazole, flusilazole and paclobutrazol.Application of 156311-83-0

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

Advantageous applications of azabenzotriazole (triazolopyridine)-based coupling reagents to solid-phase peptide synthesis was written by Carpino, Louis;El-Faham, Ayman;Minor, Charles A.;Albericio, Fernando. And the article was included in Journal of the Chemical Society, Chemical Communications in 1994.HPLC of Formula: 156311-83-0 The following contents are mentioned in the article:

1-Hydroxy-7-azabenzotriazole (HOAt) and its corresponding uronium and phosphonium salts are shown to be superior to their benzotriazole analogs in solid-phase peptides synthesis, thereby making possible the automated synthesis of peptides containing hindered amino acids. This study involved multiple reactions and reactants, such as ((3H-[1,2,3]Triazolo[4,5-b]pyridin-3-yl)oxy)tri(pyrrolidin-1-yl)phosphonium hexafluorophosphate(V) (cas: 156311-83-0HPLC of Formula: 156311-83-0).

((3H-[1,2,3]Triazolo[4,5-b]pyridin-3-yl)oxy)tri(pyrrolidin-1-yl)phosphonium hexafluorophosphate(V) (cas: 156311-83-0) belongs to triazole derivatives. Triazoles consist of a five-membered ring containing three nitrogen atoms and are biologically active, especially as antifungal, antimicrobial and enzyme inhibitors. 1,2,3-Triazoles are usually prepared following (3+2) cycloaddition protocols. A common technique for unsubstituted triazoles is the Huisgen azide-alkyne 1,3-dipolar cycloaddition: a azide and an alkyne react at high temperature to form a ring. However, the Huisgen strategy produces a mixture of isomers (typically 1,4- and 1,5-disubstituted) when used to produce substituted triazoles.HPLC of Formula: 156311-83-0

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

Total synthesis of anti-tuberculosis natural products Ilamycins E₁ and F was written by Cheng, Yingying;Tang, Shoubin;Guo, Yian;Ye, Tao. And the article was included in Organic Letters in 2018.Reference of 156311-83-0 The following contents are mentioned in the article:

The first total synthesis of the potent anti-tuberculosis cyclopeptide natural products Ilamycins E₁ and F was achieved. This highly convergent strategy consists of the synthesis of the two units (I) (Teoc = CO₂(CH₂)₂TMS) and (II) (TBDPS = tert-butyltriphenylsilyl; TMSE = O(CH₂)₂TMS) and linking them together to form the macrocyclic lactam. The upper unit I was prepared from tryptophan in five steps, and the lower unit II was prepared from glutamic acid in thirteen steps. Conversion of Ilamycin F, the most abundant of the cyclopeptides, into the more active congener, Ilamycin E₁, was also accomplished. This would provide sufficient material of Ilamycin E₁ for more extensive biol. studies. This study involved multiple reactions and reactants, such as ((3H-[1,2,3]Triazolo[4,5-b]pyridin-3-yl)oxy)tri(pyrrolidin-1-yl)phosphonium hexafluorophosphate(V) (cas: 156311-83-0Reference of 156311-83-0).

((3H-[1,2,3]Triazolo[4,5-b]pyridin-3-yl)oxy)tri(pyrrolidin-1-yl)phosphonium hexafluorophosphate(V) (cas: 156311-83-0) belongs to triazole derivatives. However, triazoles are also useful in bioorthogonal chemistry, because the large number of nitrogen atoms causes triazoles to react similar to azides.Triazole heterocyclic structures are found to form many weak nonbond interactions with the receptors and enzymes in biological systems.Reference of 156311-83-0

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

Thermal Stability Assessment of Peptide Coupling Reagents Commonly Used in Pharmaceutical Manufacturing was written by Sperry, Jeffrey B.;Minteer, Christopher J.;Tao, JingYa;Johnson, Rebecca;Duzguner, Remzi;Hawksworth, Michael;Oke, Samantha;Richardson, Paul F.;Barnhart, Richard;Bill, David R.;Giusto, Robert A.;Weaver, John D.. And the article was included in Organic Process Research & Development in 2018.Name: ((3H-[1,2,3]Triazolo[4,5-b]pyridin-3-yl)oxy)tri(pyrrolidin-1-yl)phosphonium hexafluorophosphate(V) The following contents are mentioned in the article:

Amide couplings are one of, if not the most common, chem. reactions performed in the pharmaceutical industry. Many amide bonds are generated with the help of highly active peptide coupling reagents. These reagents garnered wide use in the pharmaceutical industry, but many contain high-energy functional groups. As a result, significant time is spent assessing the thermal stability of these reagents before scale-up commences. This work assessed the thermal stability of 45 common peptide coupling reagents by differential scanning calorimetry and accelerating rate calorimetry. Those compounds flagged as potentially impact-sensitive or potentially explosive were tested by drop-hammer and explosivity screening techniques. The data are presented to drive development of these reactions toward the use of one of the more thermally stable reagents. This study involved multiple reactions and reactants, such as ((3H-[1,2,3]Triazolo[4,5-b]pyridin-3-yl)oxy)tri(pyrrolidin-1-yl)phosphonium hexafluorophosphate(V) (cas: 156311-83-0Name: ((3H-[1,2,3]Triazolo[4,5-b]pyridin-3-yl)oxy)tri(pyrrolidin-1-yl)phosphonium hexafluorophosphate(V)).

((3H-[1,2,3]Triazolo[4,5-b]pyridin-3-yl)oxy)tri(pyrrolidin-1-yl)phosphonium hexafluorophosphate(V) (cas: 156311-83-0) belongs to triazole derivatives. However, triazoles are also useful in bioorthogonal chemistry, because the large number of nitrogen atoms causes triazoles to react similar to azides. Due to the structural characteristics, both 1,2,3- and 1,2,4-triazoles are able to accommodate a broad range of substituents (electrophiles and nucleophiles) around the core structures and pave the way for the construction of diverse novel bioactive molecules.Name: ((3H-[1,2,3]Triazolo[4,5-b]pyridin-3-yl)oxy)tri(pyrrolidin-1-yl)phosphonium hexafluorophosphate(V)

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

3-Nitro-1,2,4-triazol-1-yl-tris(pyrrolidin-1-yl)phosphonium hexafluorophosphate (PyNTP) as a condensing reagent for solid-phase peptide synthesis was written by Saito, Keita;Wada, Takeshi. And the article was included in Tetrahedron Letters in 2014.Reference of 156311-83-0 The following contents are mentioned in the article:

Solid-phase oligopeptide synthesis has been well developed and most short oligo-peptides can now be easily synthesized. However, when a desired oligopeptide forms a secondary structure or includes less reactive amino acids such as aminoisobutyric acid, its terminal amino groups become less reactive and synthesis of the desired oligo-peptides becomes difficult. To expand the number of synthetic peptide sequences, we have developed efficient coupling conditions using 3-nitro-l,2,4-triazol-l-yl-tris(pyrrolidin-1-yl)phosphonium hexafluorophosphate (PyNTP) as a highly reactive condensing reagent on an un-swellable solid support. PyNTP demonstrated higher reactivity than conventional condensing reagents and the optical purity of the synthesized oligo-peptides was sufficiently high for application to general oligopeptide synthesis. This study involved multiple reactions and reactants, such as ((3H-[1,2,3]Triazolo[4,5-b]pyridin-3-yl)oxy)tri(pyrrolidin-1-yl)phosphonium hexafluorophosphate(V) (cas: 156311-83-0Reference of 156311-83-0).

((3H-[1,2,3]Triazolo[4,5-b]pyridin-3-yl)oxy)tri(pyrrolidin-1-yl)phosphonium hexafluorophosphate(V) (cas: 156311-83-0) belongs to triazole derivatives. Among the nitrogen-containing heterocyclic compounds, triazoles emerge with superior pharmacological applications. Triazole growth retardants such as uniconazole and paclobutrazol have been known to inhibit the biosynthesis of gibberellins by blocking kaurene oxidase, an P450 enzymeReference of 156311-83-0

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

Design of new small cyclic melanocortin receptor-binding peptides using molecular modeling: role of the His residue in the melanocortin peptide core was written by Prusis, Peteris;Muceniece, Ruta;Mutule, Ilze;Mutulis, Felikss;Wikberg, Jarl E. S.. And the article was included in European Journal of Medicinal Chemistry in 2001.Related Products of 156311-83-0 The following contents are mentioned in the article:

The conserved core, His-Phe-Arg-Trp, of melanocyte stimulating hormones (MSH) was probed by comparing a cyclic pentapeptide, cyclo(His-D-Phe-Arg-Trp-Gly), with three structurally similar cyclic peptides, cyclo(Asn-D-Phe-Arg-Trp-Gly), cyclo(D-Phe-Arg-Trp-Glu)-OH, and cyclo(D-Phe-Arg-Trp-Glu)-NH₂, but lacking in His. All three peptides bound to the MC₁, MC₃, MC₄ and MC₅ receptors with similar affinities. Mol. modeling indicated that the 3D structure of the DPhe-Arg-Trp of all three peptides were closely similar. The data showed that the His residue of the small rigid cyclic MSH core peptides does not participate in binding with the melanocortin receptors. This study involved multiple reactions and reactants, such as ((3H-[1,2,3]Triazolo[4,5-b]pyridin-3-yl)oxy)tri(pyrrolidin-1-yl)phosphonium hexafluorophosphate(V) (cas: 156311-83-0Related Products of 156311-83-0).

((3H-[1,2,3]Triazolo[4,5-b]pyridin-3-yl)oxy)tri(pyrrolidin-1-yl)phosphonium hexafluorophosphate(V) (cas: 156311-83-0) belongs to triazole derivatives. Among the nitrogen-containing heterocyclic compounds, triazoles emerge with superior pharmacological applications. Triazole growth retardants such as uniconazole and paclobutrazol have been known to inhibit the biosynthesis of gibberellins by blocking kaurene oxidase, an P450 enzymeRelated Products of 156311-83-0

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

Peptide thioacylation with high stereochemical preservation was written by Hoeg-Jensen, Thomas;Holm, Arne;Sorensen, Hilmer. And the article was included in Synthesis in 1996.Quality Control of ((3H-[1,2,3]Triazolo[4,5-b]pyridin-3-yl)oxy)tri(pyrrolidin-1-yl)phosphonium hexafluorophosphate(V) The following contents are mentioned in the article:

A dipeptide thioamide model system, Boc-Leu-ψ[CSNH]-Met-OMe, was used for evaluating the preservation of amino acid stereochem. during thioacylation utilizing amino monothio acids. The LL and DL peptide diastereomers were separated by use of high performance capillary electrophoresis (micellar electrokinetic capillary chromatog.). This thioacylation method combines monothio acids with coupling reagents of the PyBOP-family for generating active thiono esters with low-levels of enantiomerization (<2%). The best results in terms of stereochem. preservation and yield were obtained with PyNOP, a 6-nitro analog of PBOP. The successful activation of thiobenzoic acid with all 4 coupling reagents extended the scope of the method to include aryl monothio acids. This study involved multiple reactions and reactants, such as ((3H-[1,2,3]Triazolo[4,5-b]pyridin-3-yl)oxy)tri(pyrrolidin-1-yl)phosphonium hexafluorophosphate(V) (cas: 156311-83-0Quality Control of ((3H-[1,2,3]Triazolo[4,5-b]pyridin-3-yl)oxy)tri(pyrrolidin-1-yl)phosphonium hexafluorophosphate(V)).

((3H-[1,2,3]Triazolo[4,5-b]pyridin-3-yl)oxy)tri(pyrrolidin-1-yl)phosphonium hexafluorophosphate(V) (cas: 156311-83-0) belongs to triazole derivatives. Triazoles consist of a five-membered ring containing three nitrogen atoms and are biologically active, especially as antifungal, antimicrobial and enzyme inhibitors. 1,2,3-Triazoles are usually prepared following (3+2) cycloaddition protocols. A common technique for unsubstituted triazoles is the Huisgen azide-alkyne 1,3-dipolar cycloaddition: a azide and an alkyne react at high temperature to form a ring. However, the Huisgen strategy produces a mixture of isomers (typically 1,4- and 1,5-disubstituted) when used to produce substituted triazoles.Quality Control of ((3H-[1,2,3]Triazolo[4,5-b]pyridin-3-yl)oxy)tri(pyrrolidin-1-yl)phosphonium hexafluorophosphate(V)

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

The Scope and Mechanism of Phosphonium-Mediated S_NAr Reactions in Heterocyclic Amides and Ureas was written by Wan, Zhao-Kui;Wacharasindhu, Sumrit;Levins, Christopher G.;Lin, Melissa;Tabei, Keiko;Mansour, Tarek S.. And the article was included in Journal of Organic Chemistry in 2007.Synthetic Route of C17H27F6N7OP2 The following contents are mentioned in the article:

An efficient “one-step” synthesis of cyclic amidines and guanidines has been developed. Treatment of cyclic amides and ureas, e.g. 4-quinazolinone, with benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate (BOP), base, and nitrogen nucleophiles leads to the formation of the corresponding cyclic amidines and guanidines, e.g. 4-amino-substituted quinazolines, typically in good to excellent yields. This method has also been used to prepare heteroaryl ethers and thioethers using phenol and thiophenol nucleophiles. Time course NMR and HPLC-MS studies have facilitated explicit characterization of the proposed intermediates (the phosphonium salt and HOBt adduct); the data reveal a stepwise reaction pathway. This study involved multiple reactions and reactants, such as ((3H-[1,2,3]Triazolo[4,5-b]pyridin-3-yl)oxy)tri(pyrrolidin-1-yl)phosphonium hexafluorophosphate(V) (cas: 156311-83-0Synthetic Route of C17H27F6N7OP2).

((3H-[1,2,3]Triazolo[4,5-b]pyridin-3-yl)oxy)tri(pyrrolidin-1-yl)phosphonium hexafluorophosphate(V) (cas: 156311-83-0) belongs to triazole derivatives. Triazoles are important five-member nitrogen heterocycles involved in a wide range of industrial applications such as agrochemicals, corrosion inhibitors, dyes, optical brighteners, as well as biologically active agents. Due to the structural characteristics, both 1,2,3- and 1,2,4-triazoles are able to accommodate a broad range of substituents (electrophiles and nucleophiles) around the core structures and pave the way for the construction of diverse novel bioactive molecules.Synthetic Route of C17H27F6N7OP2

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

Oxidative Palladium Catalysis in S_NAr Reactions Leading to Heteroaryl Ethers from Pyridotriazol-1-yloxy Heterocycles with Aryl Boronic Acids was written by Wacharasindhu, Sumrit;Bardhan, Sujata;Wan, Zhao-Kui;Tabei, Keiko;Mansour, Tarek S.. And the article was included in Journal of the American Chemical Society in 2009.SDS of cas: 156311-83-0 The following contents are mentioned in the article:

The palladium-catalyzed oxidative coupling of pyrido- and benzotriazol-1-yloxyquinazolines and -thienopyrimidines, e.g., I, with aryl boronic acids in the presence of Pd(PPh₃)₄ and Cs₂CO₃ under oxygen in DME containing 0.4-0.8% water for the preparation of heteroaryl ethers, e.g., II, is described. These transformations of triazol-1-yloxy reagents demonstrate excellent O-chemoselective control under mild conditions and good yields. Mechanistic studies based on ¹⁸O labeling indicate that phenols as intermediates in S_NAr reactions with ethers are formed in oxidative and nonoxidative pathways. This study involved multiple reactions and reactants, such as ((3H-[1,2,3]Triazolo[4,5-b]pyridin-3-yl)oxy)tri(pyrrolidin-1-yl)phosphonium hexafluorophosphate(V) (cas: 156311-83-0SDS of cas: 156311-83-0).

((3H-[1,2,3]Triazolo[4,5-b]pyridin-3-yl)oxy)tri(pyrrolidin-1-yl)phosphonium hexafluorophosphate(V) (cas: 156311-83-0) belongs to triazole derivatives. Triazoles are important five-member nitrogen heterocycles involved in a wide range of industrial applications such as agrochemicals, corrosion inhibitors, dyes, optical brighteners, as well as biologically active agents. Triazoles are compounds with a vast spectrum of applications, varying from materials (polymers), agricultural chemicals, pharmaceuticals, photoactive chemicals and dyes.SDS of cas: 156311-83-0

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

Incorporation of Fmoc-Dab(Mtt)-OH during solid-phase peptide synthesis: A word of caution was written by Lam, Pak-Lun;Wu, Yue;Wong, Ka-Leung. And the article was included in Organic & Biomolecular Chemistry in 2022.Category: triazoles The following contents are mentioned in the article:

As a com. available and orthogonally protected amino acid building block, Fmoc-Dab(Mtt)-OH (Fmoc = 9-fluoerenylmethoxycarbonyl, Dab = 2,4-diaminobutyric acid, Mtt = p-methyltrityl group) showed abnormally poor coupling efficiency during solid-phase peptide synthesis (SPPS). Herein, we reveal that Fmoc-Dab(Mtt)-OH undergoes rapid lactamization under a series of conditions with various coupling reagents. Although the complete incorporation of Fmoc-Dab(Mtt)-OH can be achieved using a multi-time and preincubation-free protocol with the coupling reagent DEPBT, alternative orthogonally protected building blocks are suggested to be used for avoiding such a costly and tedious procedure. This study involved multiple reactions and reactants, such as ((3H-[1,2,3]Triazolo[4,5-b]pyridin-3-yl)oxy)tri(pyrrolidin-1-yl)phosphonium hexafluorophosphate(V) (cas: 156311-83-0Category: triazoles).

((3H-[1,2,3]Triazolo[4,5-b]pyridin-3-yl)oxy)tri(pyrrolidin-1-yl)phosphonium hexafluorophosphate(V) (cas: 156311-83-0) belongs to triazole derivatives. However, triazoles are also useful in bioorthogonal chemistry, because the large number of nitrogen atoms causes triazoles to react similar to azides. Due to the structural characteristics, both 1,2,3- and 1,2,4-triazoles are able to accommodate a broad range of substituents (electrophiles and nucleophiles) around the core structures and pave the way for the construction of diverse novel bioactive molecules.Category: triazoles

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