Tag: 100-200

In 2010,Martins, Marcos A. P.; Beck, Paulo H.; Moreira, Dayse N.; Buriol, Lilian; Frizzo, Clarissa P.; Zanatta, Nilo; Bonacorso, Helio G. published 《Straightforward microwave-assisted synthesis of 1-carboxymethyl-5-trifluoromethyl-5-hydroxy-4,5-dihydro-1H-pyrazoles under solvent-free conditions》.Journal of Heterocyclic Chemistry published the findings.Recommanded Product: 3-(Trifluoromethyl)-1H-pyrazole The information in the text is summarized as follows:

An efficient microwave-assisted synthesis of 1-carboxymethyl-5-trifluoromethyl-5-hydroxy-4,5-dihydro-1H-pyrazoles, e.g., I, from the cyclocondensation reaction between enones and Me hydrazinocarboxylate under solvent-free conditions is reported. This process is an efficient alternative to the traditional thermal heating and furnishes the heterocyclic compounds in good to excellent yields in a short reaction time. To show the versatility of 1-carboxymethyl-5-trifluoromethyl-5-hydroxy-4,5-dihydro-1H-pyrazoles, dehydration reactions of these compounds are also demonstrated. After reading the article, we found that the author used 3-(Trifluoromethyl)-1H-pyrazole(cas: 20154-03-4Recommanded Product: 3-(Trifluoromethyl)-1H-pyrazole)

3-(Trifluoromethyl)-1H-pyrazole(cas: 20154-03-4) belongs to pyrazoles. The application of pyrazole derivatives in the development of anticancer agents has been thoroughly investigated and verified. Moreover, the medicinal features of a number of natural products incorporating pyrazole moiety such as pyrazofurin, pyrazofurin B, pyrazole-3(5)-carboxylic acid and 4-methylpyrazole-3(5)-carboxylic acid have been reported.Recommanded Product: 3-(Trifluoromethyl)-1H-pyrazole

Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics

《Ligand-controlled Regiodivergent C-H Alkenylation of Pyrazoles and its Application to the Synthesis of Indazoles》 was published in Angewandte Chemie, International Edition in 2017. These research results belong to Kim, Hyun Tae; Ha, Hyeri; Kang, Geunhee; Kim, Og Soon; Ryu, Ho; Biswas, Abul Kalam; Lim, Sang Min; Baik, Mu-Hyun; Joo, Jung Min. HPLC of Formula: 52096-24-9 The article mentions the following:

Regioselective C4-, C5-, and di-alkenylations of pyrazoles were achieved. An electrophilic Pd catalyst generated by trifluoroacetic acid (TFA) and 4,5-diazafluoren-9-one (DAF) leads to C4-alkenylation, whereas KOAc and mono-protected amino acid (MPAA) ligand Ac-Val-OH give C5-alkenylation. A combination of palladium acetate, silver carbonate, and pivalic acid affords dialkenylation products. Annulation through sequential alkenylation, thermal 6π-electrocyclization, and oxidation gives functionalized indazoles. This comprehensive strategy greatly expands the range of readily accessible pyrazole and indazole derivatives, enabling useful regiodivergent C-H functionalization of pyrazoles and other heteroaromatic systems. After reading the article, we found that the author used 1-Butyl-1H-pyrazole(cas: 52096-24-9HPLC of Formula: 52096-24-9)

1-Butyl-1H-pyrazole(cas: 52096-24-9) belongs to pyrazoles. Pyrazole derivatives have been reported to exhibit a wide range of applications in medicinal chemistry and pharmacology. A large number of drugs incorporating pyrazole structure have been utilized as partial agonists for nicotinic acid receptors, antidepressants, antimicrobial agents, antiviral agents, and antifungal agents solely or along with the combination of other structural motifs.HPLC of Formula: 52096-24-9

Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics

《Organophotochemical SNAr Reactions of Mildly Electron-Poor Fluoroarenes》 was written by Sheridan, Thomas; Yayla, Hatice G.; Lian, Yajing; Genovino, Julien; Monck, Nat; Burton, Jonathan W.. Safety of 3-(Trifluoromethyl)-1H-pyrazole And the article was included in European Journal of Organic Chemistry in 2020. The article conveys some information:

C-F functionalization of arenes with a range of alc. and pyrazole nucleophiles has been achieved without the need for metal catalysts or highly electron-poor substrates. Treatment of fluoroarenes with alcs. or pyrazoles and DDQ under irradiation by blue LED light provides the corresponding substituted products. The procedure is complementary to classical SNAr chem. which generally requires basic reaction conditions and high temperatures, and provides products under non-basic conditions at ≈ 40°C. The results came from multiple reactions, including the reaction of 3-(Trifluoromethyl)-1H-pyrazole(cas: 20154-03-4Safety of 3-(Trifluoromethyl)-1H-pyrazole)

3-(Trifluoromethyl)-1H-pyrazole(cas: 20154-03-4) belongs to pyrazoles. Pyrazole derivatives have been reported to exhibit a wide range of applications in medicinal chemistry and pharmacology. A large number of drugs incorporating pyrazole structure have been utilized as partial agonists for nicotinic acid receptors, antidepressants, antimicrobial agents, antiviral agents, and antifungal agents solely or along with the combination of other structural motifs.Safety of 3-(Trifluoromethyl)-1H-pyrazole

Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics

《Hit-to-lead optimization and discovery of a potent, and orally bioavailable G protein coupled receptor kinase 2 (GRK2) inhibitor》 was written by Xu, Guozhang; Gaul, Michael D.; Liu, Zhijie; DesJarlais, Renee L.; Qi, Jenson; Wang, Weixue; Krosky, Daniel; Petrounia, Ioanna; Milligan, Cynthia M.; Hermans, An; Lu, Hua-Rong; Huang, Devine Zheng; Xu, June Zhi; Spurlino, John C.. Recommanded Product: 3-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole And the article was included in Bioorganic & Medicinal Chemistry Letters in 2020. The article conveys some information:

G-protein coupled receptor kinase 2 (GRK2), which is upregulated in the failing heart, appears to play a critical role in heart failure (HF) progression in part because enhanced GRK2 activity promotes dysfunction of β-adrenergic signaling and myocyte death. An orally bioavailable GRK2 inhibitor could offer unique therapeutic outcomes that cannot be attained by current heart failure treatments that directly target GPCRs or angiotensin-converting enzyme. Herein, we describe the discovery of a potent, selective, and orally bioavailable GRK2 inhibitor, 8h, through high-throughput screening, hit-to-lead optimization, structure-based design, mol. modeling, synthesis, and biol. evaluation. In the cellular target engagement assays, 8h enhances isoproterenol-mediated cyclic adenosine 3′,5′-monophosphate (cAMP) production in HEK293 cells overexpressing GRK2. Compound 8h was further evaluated in a human stem cell-derived cardiomyocyte (HSC-CM) contractility assay and potentiated isoproterenol-induced beating rate in HSC-CMs. In the experiment, the researchers used 3-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole(cas: 844501-71-9Recommanded Product: 3-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole)

3-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole(cas: 844501-71-9) belongs to pyrazoles. Pyrazoles are commonly used scaffold molecules in drug discovery projects. The use of pyrazole derivatives is based on their analgesic, anti-inflammatory, antipyretic, antiarrhythmic, sedative, muscle relaxant, neuroleptic, anticonvulsant, monoamine oxidase inhibitory, antidiabetic and antibacterial activities. Recommanded Product: 3-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole

Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics

Wang, Tengfei; Zheng, Danning; Zhang, Jingshun; Fan, Baowan; Ma, Yuan; Ren, Tiegang; Wang, Li; Zhang, Jinglai published an article on February 5 ,2018. The article was titled 《Protic Pyrazolium Ionic Liquids: An Efficient Catalyst for Conversion of CO2 in the Absence of Metal and Solvent》, and you may find the article in ACS Sustainable Chemistry & Engineering.Safety of 1-Butyl-1H-pyrazole The information in the text is summarized as follows:

A series of novel protic pyrazolium ionic liquids are firstly synthesized and utilized as catalysts for cycloaddition of carbon dioxide and epoxides to form cyclic carbonates under metal- and solvent-free conditions. The new developed protic pyrazolium ionic liquids present excellent catalytic activity towards the fixation of carbon dioxide. More importantly, they would be prepared by a facile two-step reaction from cheap raw starting materials with a total yield more than 90%. The influence of catalyst dosage, reaction temperature, carbon dioxide pressure, and reaction time on the synthesis of cyclic carbonates is studied to identify the optimal reaction conditions. Under the optimum condition, the catalyst suitability is studied. Addnl., the possible reaction mechanism is studied by the Double-IL model to elucidate the synergistic effects of electrostatic and weak interaction in catalytic process. The experimental process involved the reaction of 1-Butyl-1H-pyrazole(cas: 52096-24-9Safety of 1-Butyl-1H-pyrazole)

1-Butyl-1H-pyrazole(cas: 52096-24-9) belongs to pyrazoles. Pyrazoles and their related multiring analogs are common elements of a wide variety of bioactive compounds. These ring structures are rare in nature. A consequence of this is that they have previously been thought to be poor moieties to include in potential new drugs. Safety of 1-Butyl-1H-pyrazole

Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics

Computed Properties of C9H9N3O2On September 8, 2016 ,《Discovery of a Selective Phosphoinositide-3-Kinase (PI3K)-γ Inhibitor (IPI-549) as an Immuno-Oncology Clinical Candidate》 was published in ACS Medicinal Chemistry Letters. The article was written by Evans, Catherine A.; Liu, Tao; Lescarbeau, Andre; Nair, Somarajan J.; Grenier, Louis; Pradeilles, Johan A.; Glenadel, Quentin; Tibbitts, Thomas; Rowley, Ann M.; DiNitto, Jonathan P.; Brophy, Erin E.; OHearn, Erin L.; Ali, Janid A.; Winkler, David G.; Goldstein, Stanley I.; OHearn, Patrick; Martin, Christian M.; Hoyt, Jennifer G.; Soglia, John R.; Cheung, Culver; Pink, Melissa M.; Proctor, Jennifer L.; Palombella, Vito J.; Tremblay, Martin R.; Castro, Alfredo C.. The article contains the following contents:

Optimization of isoquinolinone PI3K inhibitors led to the discovery of a potent inhibitor of PI3K-γ (IPI-549) with >100-fold selectivity over other lipid and protein kinases. IPI-549 demonstrates favorable pharmacokinetic properties and robust inhibition of PI3K-γ mediated neutrophil migration in vivo and is currently in Phase 1 clin. evaluation in subjects with advanced solid tumors. After reading the article, we found that the author used Methyl 2-aminopyrazolo[1,5-a]pyridine-3-carboxylate(cas: 1620075-73-1Computed Properties of C9H9N3O2)

Methyl 2-aminopyrazolo[1,5-a]pyridine-3-carboxylate(cas: 1620075-73-1) belongs to pyrazoles. Pyrazoles are commonly used scaffold molecules in drug discovery projects. The use of pyrazole derivatives is based on their analgesic, antipyretic, neuroleptic, anticonvulsant, antiarrhythmic, sedative, muscle relaxant, monoamine oxidase inhibitory, anti-inflammatory, antidiabetic and antibacterial activities. Computed Properties of C9H9N3O2

Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics

《Versatile Tri(pyrazolyl)phosphanes as Phosphorus Precursors for the Synthesis of Highly Emitting InP/ZnS Quantum Dots》 was written by Panzer, Rene; Guhrenz, Chris; Haubold, Danny; Huebner, Rene; Gaponik, Nikolai; Eychmueller, Alexander; Weigand, Jan J.. Synthetic Route of C4H3F3N2This research focused ontripyrazolyl phosphane phosphorus indium phosphide zinc sulfide QD; hot injection; oleylamine; phosphorus; quantum dots; waste prevention. The article conveys some information:

Tri(pyrazolyl)phosphanes (5R1,R2) are utilized as an alternative, cheap and low-toxic phosphorus source for the convenient synthesis of InP/ZnS quantum dots (QDs). From these precursors, remarkably long-term stable stock solutions (>6 mo) of P(OLA)3 (OLAH=oleylamine) are generated from which the resp. pyrazoles are conveniently recovered. P(OLA)3 acts simultaneously as phosphorus source and reducing agent in the synthesis of highly emitting InP/ZnS core/shell QDs. These QDs are characterized by a spectral range between 530-620 nm and photoluminescence quantum yields (PL QYs) between 51-62 %. A proof-of-concept white light-emitting diode (LED) applying the InP/ZnS QDs as a color-conversion layer was built to demonstrate their applicability and processibility. In the experimental materials used by the author, we found 3-(Trifluoromethyl)-1H-pyrazole(cas: 20154-03-4Synthetic Route of C4H3F3N2)

3-(Trifluoromethyl)-1H-pyrazole(cas: 20154-03-4) belongs to pyrazoles. Pyrazole derivatives have been reported to exhibit a wide range of applications in medicinal chemistry and pharmacology. A large number of drugs incorporating pyrazole structure have been utilized as partial agonists for nicotinic acid receptors, antidepressants, antimicrobial agents, antiviral agents, and antifungal agents solely or along with the combination of other structural motifs.Synthetic Route of C4H3F3N2

Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics

《Quaternization and dequaternization of pyrazoles in solvent-free conditions: conventional heating versus microwave irradiation》 was written by Diez-Barra, Enrique; De la Hoz, Antonio; Sanchez-Migallon, Ana; Elguero, Jose. Reference of 1-Butyl-1H-pyrazole And the article was included in Journal of Heterocyclic Chemistry on August 31 ,1999. The article conveys some information:

A study on the quaternization and dequaternization of pyrazoles by conventional heating and microwave irradiation in solvent-free conditions is reported. Microwave irradiation produces an acceleration in the quaternization rate and a rapid equilibration between quaternized and non-quaternized products. Dequaternization is also more rapid and a change in the selectivity is observed using sym. pyrazolium salts. The experimental process involved the reaction of 1-Butyl-1H-pyrazole(cas: 52096-24-9Reference of 1-Butyl-1H-pyrazole)

1-Butyl-1H-pyrazole(cas: 52096-24-9) belongs to pyrazoles. Pyrazole derivatives have been reported to exhibit a wide range of applications in medicinal chemistry and pharmacology. A large number of drugs incorporating pyrazole structure have been utilized as partial agonists for nicotinic acid receptors, antidepressants, antimicrobial agents, antiviral agents, and antifungal agents solely or along with the combination of other structural motifs.Reference of 1-Butyl-1H-pyrazole

Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics

《Orchestrated Triple C-H Activation Reactions Using Two Directing Groups: Rapid Assembly of Complex Pyrazoles》 was published in Angewandte Chemie, International Edition in 2015. These research results belong to Yang, Weibo; Ye, Shengqing; Fanning, Dewey; Coon, Timothy; Schmidt, Yvonne; Krenitsky, Paul; Stamos, Dean; Yu, Jin-Quan. Reference of 3-(tert-Butyl)-1-ethyl-1H-pyrazole-5-carboxylic acid The article mentions the following:

A sequential triple C-H activation reaction directed by a pyrazole and an amide group leads to the well-controlled construction of sterically congested dihydrobenzo[e]indazole derivs I [R1 = H, 4-Me, 3-Me, 3,4-diMe, 4-Ph, 4-F, etc.; R2 = Me, (CH2)2Ph, (CH2)3Ph; R3 = Me, Et, iBu, cyclohexylmethyl; R2R3=(CH2)5; R4 = Me, Et]. This cascade reaction demonstrates that the often problematic competing C-H activation pathways in the presence of multiple directing groups can be harvested by design to improve step economy in synthesis. Pyrazole as a relatively weak coordinating group is shown to direct Csp3-H activation for the first time. In the experiment, the researchers used 3-(tert-Butyl)-1-ethyl-1H-pyrazole-5-carboxylic acid(cas: 195447-83-7Reference of 3-(tert-Butyl)-1-ethyl-1H-pyrazole-5-carboxylic acid)

3-(tert-Butyl)-1-ethyl-1H-pyrazole-5-carboxylic acid(cas: 195447-83-7) belongs to pyrazoles. Pyrazole derivatives have been reported to exhibit a wide range of applications in medicinal chemistry and pharmacology. A large number of drugs incorporating pyrazole structure have been utilized as partial agonists for nicotinic acid receptors, antidepressants, antimicrobial agents, antiviral agents, and antifungal agents solely or along with the combination of other structural motifs.Reference of 3-(tert-Butyl)-1-ethyl-1H-pyrazole-5-carboxylic acid

Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics

《A Continuous Flow Strategy for the Facile Synthesis and Elaboration of Semi-Saturated Heterobicyclic Fragments》 was published in European Journal of Organic Chemistry in 2019. These research results belong to Luise, Nicola; Wyatt, Eleanor W.; Tarver, Gary J.; Wyatt, Paul G.. Category: pyrazoles-derivatives The article mentions the following:

An efficient hydrogenation protocol under continuous flow conditions was developed for the synthesis of underrepresented semi-saturated bicyclic fragments containing highly sp3-rich skeletons for fragment-based drug discovery (FBDD) programs. Excellent yields were generally achieved by using Pd/C (10% weight/weight) and RaNi at 25-150° under 4-100 bar of hydrogen pressure. The generated fragments, with appropriate physicochem. properties, present diverse hydrogen-bonding pharmacophores and useful vectors for their synthetic elaboration in the optimization stage. Successive, simple functionalizations in continuous flow were accomplished to demonstrate the opportunity to develop multi-step continuous flow synthesis of valuable starting points for FBDD campaigns. A conclusive quality control (QC) was essential to discard those structures which do not fit the typical fragment library parameters. The results came from multiple reactions, including the reaction of Methyl 1H-pyrazolo[4,3-b]pyridine-6-carboxylate(cas: 1301214-72-1Category: pyrazoles-derivatives)

Methyl 1H-pyrazolo[4,3-b]pyridine-6-carboxylate(cas: 1301214-72-1) belongs to pyrazoles. The application of pyrazole derivatives in the development of anticancer agents has been thoroughly investigated and verified. Moreover, the medicinal features of a number of natural products incorporating pyrazole moiety such as pyrazofurin, pyrazofurin B, pyrazole-3(5)-carboxylic acid and 4-methylpyrazole-3(5)-carboxylic acid have been reported.Category: pyrazoles-derivatives

Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics