Day: October 20, 2022

SDS of cas: 20154-03-4In 2012 ,《Pyrazoles as ligands for the Rh-catalyzed hydroformylation of alkenes in supercritical carbon dioxide》 appeared in Russian Chemical Bulletin. The author of the article were Lyubimov, S. E.; Rastorguev, E. A.; Davankov, V. A.. The article conveys some information:

Activity of pyrazole ligands in hydroformylation of a number of unsaturated terminal substrates in supercritical carbon dioxide (scCO2) in the presence of Rh-catalyst was studied. The ligands without free NH group at position 1 of the pyrazole ring were active. The use of scCO2 as the reaction medium served to reach a higher conversion and regioselectivity of hydroformylation as compared to those in toluene. In addition to this study using 3-(Trifluoromethyl)-1H-pyrazole, there are many other studies that have used 3-(Trifluoromethyl)-1H-pyrazole(cas: 20154-03-4SDS of cas: 20154-03-4) was used in this study.

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.SDS of cas: 20154-03-4

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

Hu, Yue; Dong, Yao-Dong; Wu, Yan-Chao; Wang, Qiu-Xu; Nan, Xiang; Wang, Da-Li published their research in Bioorganic & Medicinal Chemistry on December 15 ,2021. The article was titled 《AMPK inhibitor BML-275 induces neuroprotection through decreasing cyt c and AIF expression after transient brain ischemia》.HPLC of Formula: 945376-95-4 The article contains the following contents:

Stroke is a major public health problem with an imperative need for a more effective and tolerated therapy. Neuroprotective therapy may be an effective therapeutic intervention for stroke. The morbidity and mortality of stroke-induced secondary brain injury is mainly caused by neuronal apoptosis, which can be executed in a caspase-dependent or apoptosis inducing factor (AIF)-dependent manner. As apoptosis is an energy-dependent process with a relative time delay, abnormal energy metabolism could be a significant and fundamental pathophysiol. basis of stroke. To our knowledge, convincible evidences that AMPK inhibition exerts neuroprotection in cerebral ischemia injury via anti-apoptosis remain to be investigated. Accordingly, the aims of this study were to investigate the protective effects of AMPK inhibitor BML-275 on cerebral ischemic/reperfusion (I/R) injury and to elucidate the underlying mechanisms. Cerebral ischemia was induced by transient middle cerebral artery occlusion (tMCAO) in male C57BL/6 mice. The therapeutic effects of BML-275 were evaluated by infarct sizes, neurol. scores and the proportion of apoptotic neurons after 24 h of reperfusion. The cell apoptosis markers cyt c and AIF were also evaluated. The results showed that i.p. administration of BML-275 alleviate the cerebral infarction, neurol. deficit and neuronal apoptosis induced by MCAO. BML-275 simultaneously induces anti-apoptosis and decreases the expression of cyt c and AIF. This study supports the hypothesis that anti-apoptosis is one of potential neuroprotective strategies for the treatment of stroke. In the experiment, the researchers used many compounds, for example, 4-(3-Bromopyrazolo[1,5-a]pyrimidin-6-yl)phenol(cas: 945376-95-4HPLC of Formula: 945376-95-4)

4-(3-Bromopyrazolo[1,5-a]pyrimidin-6-yl)phenol(cas: 945376-95-4) belongs to pyrazoles. Pyrazoles are commonly used scaffold molecules in drug discovery projects. The use of pyrazole derivatives is based on their analgesic, neuroleptic, anticonvulsant, monoamine oxidase inhibitory, anti-inflammatory, antipyretic, antiarrhythmic, sedative, muscle relaxant, antidiabetic and antibacterial activities. HPLC of Formula: 945376-95-4

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

In 2019,New Journal of Chemistry included an article by Kandel, Shambhu; Sathish, Veerasamy; Mathivathanan, Logesh; Morozov, Alexander N.; Mebel, Alexander M.; Raptis, Raphael G.. Application of 114474-26-9. The article was titled 《Aggregation induced emission enhancement (AIEE) of tripodal pyrazole derivatives for sensing of nitroaromatics and vapor phase detection of picric acid》. The information in the text is summarized as follows:

Five pyrazole-based tripodal ligands, compounds1-5 (I,II,III,IV,V), based on a 1,3,5-triethylbenzene scaffold, show aggregation-induced emission enhancement (AIEE) and their application as fluorescent probes for detection of nitroaroms. is investigated. All five compounds are weakly fluorescent in THF, but their fluorescence intensity increases with the addition of a poor solvent (water), causing nanoaggregation, as confirmed by the changes in the UV-vis and emission spectra, and light scattering techniques. The nanoaggregates exhibit time-dependent emission characteristics and can serve as sensors for the detection of nitroarom. compounds The selective detection of picric acid (PA) over other nitroarom. compounds by 1-3 (I-III) is attributed to the photoinduced electron transfer from the trispyrazole to the quencher, as confirmed by TD-DFT calculations Furthermore, compounds 1(I) and 2 (II) were tested for sensing of PA in the vapor and solid phases by means of changes in the emission spectra observable by the naked eye. The supramol. assemblies of 1(I) and 3(III) with PA were structurally characterized by X-ray crystallog. In addition to this study using 4-(4-Nitrophenyl)-1H-pyrazole, there are many other studies that have used 4-(4-Nitrophenyl)-1H-pyrazole(cas: 114474-26-9Application of 114474-26-9) was used in this study.

4-(4-Nitrophenyl)-1H-pyrazole(cas: 114474-26-9) belongs to pyrazoles. Pyrazoles are commonly used scaffold molecules in drug discovery projects. The use of pyrazole derivatives is based on their analgesic, monoamine oxidase inhibitory, anti-inflammatory, antipyretic, neuroleptic, anticonvulsant, antiarrhythmic, sedative, muscle relaxant, antidiabetic and antibacterial activities. Application of 114474-26-9

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

Jagtap, Ajit Dhananjay; Kondekar, Nagendra B.; Hung, Pei-Yun; Hsieh, Chen-En; Yang, Chia-Ron; Chen, Grace Shiahuy; Chern, Ji-Wang published an article on January 31 ,2020. The article was titled 《4-Substituted 2-amino-3,4-dihydroquinazolines with a 3-hairpin turn side chain as novel inhibitors of BACE-1》, and you may find the article in Bioorganic Chemistry.Product Details of 930-36-9 The information in the text is summarized as follows:

Herein, the authors report the identification, design, and synthesis of a series of 4-substituted 2-amino-3,4-dihydroquinazolines I [R1 = Me, CH:CH2, Bn, etc., R2 = Me, cyclopropyl, (1-methyl-1H-pyrazol-4-yl)methyl] with hairpin turn side chains as novel inhibitors of BACE-1. The dihydroquinazoline derivatives were rationally designed by modifying the amide group and relocating the α-hydrophobic substituent on the hairpin turn side chain of lead compound II to the C4-position on the 3,4-dihydroquinazoline scaffold to facilitate interactions with the S1, S2 and S1′ subsites of BACE-1. Among these derivatives, two compounds exhibited potent BACE-1 inhibitory activity: 4-methyl-substituted derivative I [R1 = Me, R2 = (1-methyl-1H-pyrazol-4-yl)methyl] (BACE-1 CFA IC50 = 0.38μM; BACE-1 WCA IC50 = 0.14μM) and 4-cyclohexylmethyl-substituted derivative I [R1 = cyclohexylmethyl, R2 = (1-methyl-1H-pyrazol-4-yl)methyl] (BACE-1 CFA IC50 = 0.49μM; BACE-1 WCA IC50 = 0.14μM). The results suggest that the structural modifications maintain the hairpin turn topol. similar to that of compound II and provide an addnl. interaction with the S2 subsite. The results came from multiple reactions, including the reaction of 1-Methylpyrazole(cas: 930-36-9Product Details of 930-36-9)

1-Methylpyrazole(cas: 930-36-9) 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. Product Details of 930-36-9

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

In 1989,Coe, Paul L.; Cook, Michael I. published 《Reactions of tetrafluoroethene oligomers. Part XII. Cycloaddition reactions of 3,3,4,4,4-pentafluoro-2-(pentafluoroethyl)-2-(trifluoromethyl)diazobutane. A novel synthesis of pyrazoles》.Journal of Fluorine Chemistry published the findings.Computed Properties of C5H6N2O2 The information in the text is summarized as follows:

The title diazoalkane I reacts smoothly with a variety of electron-deficient alkenes to give, unexpectedly, pyrazole derivatives Thus, reaction with Me or Et propenoate affords the Me and Et esters of pyrazole-3-carboxylic acid. Reaction with di-Et maleate yields 3,4-bis(ethoxycarbonyl)pyrazole, and di-Me maleate gives the di-Me ester II. Treatment of I with propenonitrile afforded 3-cyanopyrazole, and with propenoic acid pyrazole-3-carboxylic acid was obtained. In all of these reactions two side products were isolated, namely perfluoro(3-methylpent-2-ene) and 3H-3-trifluoromethyldecafluoropentane. A mechanistic rationale for these unusual and potentially useful reactions is given. The experimental part of the paper was very detailed, including the reaction process of Methyl 1H-pyrazole-3-carboxylate(cas: 15366-34-4Computed Properties of C5H6N2O2)

Methyl 1H-pyrazole-3-carboxylate(cas: 15366-34-4) 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.Computed Properties of C5H6N2O2

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

In 2012,Zhong, Qiqing; Ngim, Kenley K.; Sun, Megan; Li, Jane; Deese, Alan; Chetwyn, Nik P. published 《Strategies for the analysis of highly reactive pinacolboronate esters》.Journal of Chromatography A published the findings.COA of Formula: C10H17BN2O2 The information in the text is summarized as follows:

Pinacolboronate esters (or boronic acid, pinacol esters) are widely used in the Suzuki coupling reaction to connect organic building blocks for the total synthesis of complex mols. The 2-aminopyrimidine-5-pinacolboronate ester was used as a starting material in the synthesis of a development compound, necessitating a chromatog. purity method to assess its quality. This aryl pinacolboronate ester posed unique anal. challenges due to its facile hydrolysis to the corresponding boronic acid, which is nonvolatile and poorly soluble in organic solvents. This made GC and normal-phase HPLC anal. unsuitable. In reversed-phase mode, typical sample preparation and anal. conditions promoted rapid sample degradation to the boronic acid. To overcome these challenges, unconventional approaches were necessary to stabilize 2-aminopyrimidine-5-pinacolboronate ester, adequately solubilize its boronic acid, and produce acceptable separation and retention. The final method employed nonaqueous and aprotic diluent, and a reversed-phase separation using highly basic mobile phases (pH 12.4) with an ion pairing reagent. These strategies were successfully applied to several other reactive pinacolboronate esters for purity anal., demonstrating broad applicability to this unique class of compounds The experimental process involved the reaction of 1-Methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole(cas: 847818-74-0COA of Formula: C10H17BN2O2)

1-Methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole(cas: 847818-74-0) 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. COA of Formula: C10H17BN2O2

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

In 2013,Zhang, Yu-juan; Xing, Lei; Chen, Guo-liang published 《Synthesis of pinacol 1-methyl-1H-pyrazole-5-boronate》.Jingxi Huagong Zhongjianti published the findings.Category: pyrazoles-derivatives The information in the text is summarized as follows:

Alkyl-pyrazole acid is an important intermediate for the synthesis of many biol. active compounds The target compound was prepared in overall yield of 27.4% starting from 1H-pyrazole via methylation with tri-Me phosphate, converting into boronic acids with tri-Me borate after reaction with Bu lithium, and condensation with pinacol. The process conditions were optimized for the synthesis and purification of intermediate 3. The structure of target compound was characterized by 1H NMR. In the experiment, the researchers used 1-Methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole(cas: 847818-74-0Category: pyrazoles-derivatives)

1-Methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole(cas: 847818-74-0) 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. Category: pyrazoles-derivatives

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

In 2017,Garg, Vineeta; Kumar, Pradeep; Verma, Akhilesh K. published 《Chemo-, Regio-, and Stereoselective N-Alkenylation of Pyrazoles/Benzpyrazoles Using Activated and Unactivated Alkynes》.Journal of Organic Chemistry published the findings.Application In Synthesis of 3-(Trifluoromethyl)-1H-pyrazole The information in the text is summarized as follows:

Transition-metal-free chemo-, regio-, and stereoselective synthesis of (Z) and (E) styryl pyrazoles and benzpyrazoles by the addition of N-heterocycles onto functionalized terminal and internal alkynes using a super basic solution of KOH/DMSO has been described. The stereochem. outcome of the reaction was governed by time and quantity of the base. The reaction of pyrazoles and benzpyrazoles onto alkynes takes place chemoselectively without affecting the free -NH2 group of pyrazoles and -OH group of alkynes. The designed protocol was well implemented on alkynes bearing long alkyl chain, an alicyclic ring, hydroxy, ether, and ester functionality, which offer the N-alkenylated products in good yields. This developed methodol. also provides easy access for the synthesis of bis-vinylated heterocycles. The presence of free -NH2, -OH, -COOR, and halo group in styryl pyrazoles, could be further utilized for synthetic elaboration, which is advantageous for biol. evaluation. For the first time, we have disclosed the base-mediated conversion of (Z)-styryl pyrazoles to (E)-styryl pyrazoles in KOH/DMSO system. The cis-trans isomerization was supported by the control experiments and deuterium labeling studies. The results came from multiple reactions, including the reaction of 3-(Trifluoromethyl)-1H-pyrazole(cas: 20154-03-4Application In Synthesis of 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.Application In Synthesis of 3-(Trifluoromethyl)-1H-pyrazole

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

In 2017,Huang, Adrian; Wo, Kellie; Lee, So Yeun Christine; Kneitschel, Nika; Chang, Jennifer; Zhu, Kathleen; Mello, Tatsiana; Bancroft, Laura; Norman, Natalie J.; Zheng, Shao-Liang published 《Regioselective Synthesis, NMR, and Crystallographic Analysis of N1-Substituted Pyrazoles》.Journal of Organic Chemistry published the findings.Safety of 3-(Trifluoromethyl)-1H-pyrazole The information in the text is summarized as follows:

A systematic study of the N-substitution reactions of 3-substituted pyrazoles under basic conditions was undertaken. N1-Alkyl-, aryl-, and heteroarylpyrazoles were prepared regioselectively in 28-96% yields and in 3:1->99:1 regioselectivities by alkylation or arylation of 3-nitro-, 3-trifluoromethyl, 3-Me, 3-bromo-, 3-phenylpyrazoles and Et 3-pyrazolecarboxylate with alkyl bromides and iodides and electron-deficient aryl fluorides using K2CO3 as base in DMSO. DFT calculations of the at. charges at the pyrazole nitrogens in the pyrazolate anions were consistent with the observed regioselectivities; steric effects were observed in alkylations of pyrazoles. The structures of twenty-five of the pyrazole products were determined by X-ray crystallog. In the part of experimental materials, we found many familiar compounds, such as 3-(Trifluoromethyl)-1H-pyrazole(cas: 20154-03-4Safety of 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.Safety of 3-(Trifluoromethyl)-1H-pyrazole

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

In 2017,Zhan, Miao; Deng, Yufang; Zhao, Lifeng; Yan, Guoyi; Wang, Fangying; Tian, Ye; Zhang, Lanxi; Jiang, Hongxia; Chen, Yuanwei published 《Design, Synthesis, and Biological Evaluation of Dimorpholine Substituted Thienopyrimidines as Potential Class I PI3K/mTOR Dual Inhibitors》.Journal of Medicinal Chemistry published the findings.Recommanded Product: 1-Methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole The information in the text is summarized as follows:

Dysfunctional signaling of the PI3K/AKT/mTOR pathway in cancer and its crucial role in cell growth and survival have made it a much desired target for cancer therapeutics. A series of dimorpholine substituted thienopyrimidine derivatives has been prepared and evaluated in vitro and in vivo. Among them, compound 14o was identified as a dual Class I PI3K and mTOR kinase inhibitor, which had an approx. 8-fold improvement in mTOR inhibition relative to the class I PI3K inhibitor 1 (pictilisib, GDC-0941). Western blot anal. confirmed the 14o mechanistic modulation of the cellular PI3K/AKT/mTOR pathway through inhibiting phosphorylation of both AKT and S6 in human cancer cell lines. In addition, 14o demonstrated significant efficacy in SKOV-3 and U87MG tumor xenograft models without causing significant weight loss and toxicity. In addition to this study using 1-Methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole, there are many other studies that have used 1-Methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole(cas: 847818-74-0Recommanded Product: 1-Methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole) was used in this study.

1-Methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole(cas: 847818-74-0) 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: 1-Methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole

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