Month: October 2022

Product Details of 847818-74-0In 2013 ,《Preparation of a diverse purine-scaffold library via one-step palladium catalyzed cross-coupling》 appeared in Heterocycles. The author of the article were Taldone, Tony; Zatorska, Danuta; Patel, Hardik J.; Sun, Weilin; Patel, Maulik R.; Chiosis, Gabriela. The article conveys some information:

In an ongoing efforts to prepare Hsp90 inhibitors (heat-shock proteins HSP 90 inhibitors), various cross-coupling reactions (Suzuki, Stille, Heck, and Sonogashira) were used to construct a diverse library of substituted purines in a single step from PU-H71. The authors showed show that these reactions, particularly a Suzuki coupling, are highly efficient, do not require protection of the pendant amine and due to a wide variety of com. available substrates, allow for the rapid development of a diverse purine library. The products derived from these reactions will permit the exploration of the chem. space occupied by the key 6′-iodine of PU-H71 through mols. with diverse phys. and chem. properties with the potential to be useful for diseases in which Hsp90 is implicated. The synthesis of the target compounds was achieved using 6-amino-8-[(6-iodo-1,3-benzodioxolyl)thio]-N-(1-methylethyl)-9H-purine-9-propanamine as a key starting material in a reaction with boronic acid derivatives., alkenes, alkynes and organotin compounds (stannane compounds). The title compounds thus formed included 6-amino-N-(1-methylethyl)-8-[[6-(2-oxazolyl)-1,3-benzodioxolyl]thio]-9H-purine-9-propanamine (I) and related substances, such as derivatives of pyrimidine, pyrazine, imidazole, thiazole, alkenes, isoxazole, pyrazole , furan, pyrrole, pyridine, cyclohexane, cyclopentane, alkyne derivatives In the part of experimental materials, we found many familiar compounds, such as 1-Methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole(cas: 847818-74-0Product Details of 847818-74-0)

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. Product Details of 847818-74-0

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

《Chemical Validation of DegS As a Target for the Development of Antibiotics with a Novel Mode of Action》 was published in ChemMedChem in 2019. These research results belong to Bongard, Jens; Schmitz, Anna Laura; Wolf, Alex; Zischinsky, Gunther; Pieren, Michel; Schellhorn, Birgit; Bravo-Rodriguez, Kenny; Schillinger, Jasmin; Koch, Uwe; Nussbaumer, Peter; Klebl, Bert; Steinmann, Joerg; Buer, Jan; Sanchez-Garcia, Elsa; Ehrmann, Michael; Kaiser, Markus. Safety of 4-(4-(tert-Butyl)phenyl)-1H-pyrazol-3-amine The article mentions the following:

Despite the availability of hundreds of antibiotic drugs, infectious diseases continue to remain one of the most notorious health issues. In addition, the disparity between the spread of multidrug-resistant pathogens and the development of novel classes of antibiotics exemplify an important unmet medical need that can only be addressed by identifying novel targets. Herein we demonstrate, by the development of the first in vivo active DegS inhibitors based on a pyrazolo[1,5-a]-1,3,5-triazine scaffold, that the serine protease DegS and the cell envelope stress-response pathway σE represent a target for generating antibiotics with a novel mode of action. Moreover, DegS inhibition is synergistic with well-established membrane-perturbing antibiotics, thereby opening promising avenues for rational antibiotic drug design.4-(4-(tert-Butyl)phenyl)-1H-pyrazol-3-amine(cas: 1015845-73-4Safety of 4-(4-(tert-Butyl)phenyl)-1H-pyrazol-3-amine) was used in this study.

4-(4-(tert-Butyl)phenyl)-1H-pyrazol-3-amine(cas: 1015845-73-4) belongs to anime. Many important products require amines as part of their syntheses. Methylamine is utilized in the production of the analgesic meperidine (trade name Demerol) and the photographic developer Metol (trademark), and dimethylamine is used in the synthesis of the antihistamine diphenhydramine (trade name Benadryl), the solvent dimethylformamide (DMF), and the rocket propellant 1,1-dimethylhydrazine. The synthesis of the insect repellent N,N-diethyl-m-toluamide (DEET) incorporates diethylamine while that of the synthetic fibre Kevlar requires aromatic amines.Safety of 4-(4-(tert-Butyl)phenyl)-1H-pyrazol-3-amine

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

《Direct electrochemical hydrodefluorination of trifluoromethyl ketones enabled by non-protic conditions》 was published in Chemical Science in 2021. These research results belong to Box, John R.; Atkins, Alexander P.; Lennox, Alastair J. J.. Name: 1-Methylpyrazole The article mentions the following:

CF2H groups are unique due to the combination of their lipophilic and hydrogen bonding properties. The strength of H-bonding is determined by the group to which it is appended. Several functional groups have been explored in this context including O, S, SO and SO2 to tune the intermol. interaction. Difluoromethyl ketones are under-studied in this context, without a broadly accessible method for their preparation Herein, authors describe the development of an electrochem. hydrodefluorination of readily accessible trifluoromethyl ketones. The single-step reaction at deeply reductive potentials is uniquely amenable to challenging electron-rich substrates and reductively sensitive functionality. Key to this success is the use of non-protic conditions enabled by an ammonium salt that serves as a reductively stable, masked proton source. Anal. of their H-bonding has revealed difluoromethyl ketones to be potentially highly useful dual H-bond donor/acceptor moieties. The results came from multiple reactions, including the reaction of 1-Methylpyrazole(cas: 930-36-9Name: 1-Methylpyrazole)

1-Methylpyrazole(cas: 930-36-9) 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.Name: 1-Methylpyrazole

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

《Optimization of Triazine Nitriles as Rhodesain Inhibitors: Structure-Activity Relationships, Bioisosteric Imidazopyridine Nitriles, and X-ray Crystal Structure Analysis with Human Cathepsin L》 was written by Ehmke, Veronika; Winkler, Edwin; Banner, David W.; Haap, Wolfgang; Schweizer, W. Bernd; Rottmann, Matthias; Kaiser, Marcel; Freymond, Celine; Schirmeister, Tanja; Diederich, Francois. COA of Formula: C4H3F3N2This research focused onTrypanosoma rhodesain inhibitor triazine nitrile structure activity relationship. The article conveys some information:

The cysteine protease rhodesain of Trypanosoma brucei parasites causing African sleeping sickness has emerged as a target for the development of new drug candidates. Based on a triazine nitrile moiety as electrophilic headgroup, optimization studies on the substituents for the S1, S2, and S3 pockets of the enzyme were performed using structure-based design and resulted in inhibitors with inhibition constants in the single-digit nanomolar range. Comprehensive structure-activity relationships clarified the binding preferences of the individual pockets of the active site. The S1 pocket tolerates various substituents with a preference for flexible and basic side chains. Variation of the S2 substituent led to high-affinity ligands with inhibition constants down to 2 nM for compounds bearing cyclohexyl substituents. Systematic investigations on the S3 pocket revealed its potential to achieve high activities with aromatic vectors that undergo stacking interactions with the planar peptide backbone forming part of the pocket. X-ray crystal structure anal. with the structurally related enzyme human cathepsin L confirmed the binding mode of the triazine ligand series as proposed by mol. modeling. Sub-micromolar inhibition of the proliferation of cultured parasites was achieved for ligands decorated with the best substituents identified through the optimization cycles. In cell-based assays, the introduction of a basic side chain on the inhibitors resulted in a 35-fold increase in antitrypanosomal activity. Finally, bioisosteric imidazopyridine nitriles were studied to prevent off-target effects with unselective nucleophiles by decreasing the inherent electrophilicity of the triazine nitrile headgroup. Using this ligand, the stabilization by intramol. hydrogen bonding of the thioimidate intermediate, formed upon attack of the catalytic cysteine residue, compensates for the lower reactivity of the headgroup. The imidazopyridine nitrile ligand showed excellent stability toward the thiol nucleophile glutathione in a quant. in vitro assay and fourfold lower cytotoxicity than the parent triazine nitrile. After reading the article, we found that the author used 3-(Trifluoromethyl)-1H-pyrazole(cas: 20154-03-4COA of Formula: 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.COA of Formula: C4H3F3N2

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

In 2018,Wuji Huaxue Xuebao included an article by Li, Song; Gan, Xian-xue; Tang, Liang-fu. Quality Control of (3-methyl-1H-pyrazol-5-yl)methanol. The article was titled 《Syntheses and catalytic properties of metal carbonyl derivatives with hydroxymethyl functionalized pyrazoles》. The information in the text is summarized as follows:

Reaction of tungsten or molybdenum carbonyl with 3(5)-hydroxymethyl-5(3)-methylpyrazole (L1), 4-hydroxymethylpyrazole (L2) and bis(3-hydroxymethyl-5-methylpyrazol-1-yl)methane (L3) yielded complexes LW(CO)5 (L = L1 or L2) and L3M(CO)4 (M = Mo or W), resp. These complexes have been fully characterized by NMR, IR and x-ray crystal structural analyses, indicating that they form 1D or 2D organometallic supramol. architectures through O-H···O, N-H···O and O-H···OC-M hydrogen bonding interactions, and these structures are significantly affected by the relative position of the hydroxymethyl group on the pyrazole ring. In addition, these complexes show moderate catalytic activity for the cyclotrimerization reaction of phenylacetylene. The experimental part of the paper was very detailed, including the reaction process of (3-methyl-1H-pyrazol-5-yl)methanol(cas: 29004-73-7Quality Control of (3-methyl-1H-pyrazol-5-yl)methanol)

(3-methyl-1H-pyrazol-5-yl)methanol(cas: 29004-73-7) 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. Quality Control of (3-methyl-1H-pyrazol-5-yl)methanol

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

In 2016,Diamanti, Eleonora; Bottegoni, Giovanni; Goldoni, Luca; Realini, Natalia; Pagliuca, Chiara; Bertozzi, Fabio; Piomelli, Daniele; Pizzirani, Daniela published 《Pyrazole-Based Acid Ceramidase Inhibitors: Design, Synthesis, and Structure-Activity Relationships》.Synthesis published the findings.Related Products of 20154-03-4 The information in the text is summarized as follows:

Acid ceramidase (a.c.) is a lysosomal cysteine amidase responsible for the cleavage of ceramide into sphingosine, which is then phosphorylated to sphingosine 1-phosphate. AC regulates the intracellular levels of ceramide and sphingosine, and a.c. inhibition may be useful in the treatment of disorders, such as cancer, in which ceramide-mediated signaling may be dysfunctional. Despite their potential exptl. and therapeutic value, the number of available small-mol. inhibitors of a.c. activity remains limited. In the present study is described the discovery of a class of potent pyrazole carboxamide-based a.c. inhibitors, which were identified using the at. property field (APF) approach and developed through systematic SAR studies and in vitro pharmacol. characterization. The best compound of this series inhibits a.c. with nanomolar potency and causes ceramide accumulation and sphingosine depletion in intact G361 proliferative melanoma cells. By expanding the current armamentarium of a.c. inhibitors, these results should facilitate future efforts to unravel the biol. of a.c. and the therapeutic potential of its inhibition.3-(Trifluoromethyl)-1H-pyrazole(cas: 20154-03-4Related Products of 20154-03-4) was used in this study.

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.Related Products of 20154-03-4

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

In 2017,Diaz, Jose Luis; Corbera, Jordi; Martinez, Daniel; Bordas, Magda; Sicre, Cristina; Pascual, Rosalia; Pretel, Ma Jose; Marin, Ana Paz; Montero, Ana; Dordal, Albert; Alvarez, Ines; Almansa, Carmen published 《Pyrazolo[3,4-d]pyrimidines as sigma-1 receptor ligands for the treatment of pain. Part 2: Introduction of cyclic substituents in position 4》.MedChemComm published the findings.Name: 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:

The replacement of acylamino group by cyclic substituents in the position 4 of the pyrazolo[3,4-d]pyrimidine scaffold I [R = Ph, pyridin-3-yl, 1-methyl-1H-pyrazol-5-yl, etc.], led to highly active sigma-1 receptor (σ1R) ligands. Ph or pyrazolyl groups were the best in terms of affinity for the σ1R and the compound I [R = 1-methyl-1H-pyrazol-5-yl], was the most selective. Compound I [R = 1-methyl-1H-pyrazol-5-yl] was also one of the best σ1R ligands ever described in terms of lipophilic ligand efficiency, which translated into a good physicochem. and ADMET profile. In addition, compound I [R = 1-methyl-1H-pyrazol-5-yl] was identified as an antagonist of the σ1R in view of its potent antinociceptive profile in several pain models in mice.1-Methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole(cas: 847818-74-0Name: 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, monoamine oxidase inhibitory, anti-inflammatory, antipyretic, neuroleptic, anticonvulsant, antiarrhythmic, sedative, muscle relaxant, antidiabetic and antibacterial activities. Name: 1-Methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole

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

《DMSO-catalysed late-stage chlorination of (hetero)arenes》 was published in Nature Catalysis in 2020. These research results belong to Song, Song; Li, Xinyao; Wei, Jialiang; Wang, Weijin; Zhang, Yiqun; Ai, Lingsheng; Zhu, Yuchao; Shi, Xiaomeng; Zhang, Xiaohui; Jiao, Ning. Category: pyrazoles-derivatives The article mentions the following:

A highly efficient aromatic chlorination of arenes such as 1-methyl-indazole, imidazo[1,2-a]pyrazine, phenylthiophene, anthracene, etc. that is catalyzed by DMSO with N-chlorosuccinimide as the chloro source is reported. The mild conditions, easy-availability and stability of the catalyst and reagents, as well as good functional-group tolerance, showed the approach to be a versatile protocol for the late-stage aromatic chlorination of complex natural products, e.g., papaverine, drugs, e.g., diclofenac and peptides, e.g., I. The multi-gram experiment and low-cost of N-chlorosuccinimide and DMSO show great potential for drug discovery and development in industrial applications. The experimental part of the paper was very detailed, including the reaction process of 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

Electric Literature of C4H6N2OOn October 1, 2003 ,《New 1-substituted 4-cinnamoyl-5-hydroxypyrazoles and precursors thereof: Synthesis, ring closure reactions and NMR-spectroscopic investigations》 was published in Heterocycles. The article was written by Holzer, Wolfgang; Krca, Ingrid. The article contains the following contents:

Reaction of 1-substituted 5-hydroxy-1H-pyrazoles (pyrazolones) with trans-cinnamoyl chloride/calcium hydroxide in dioxane affords the corresponding 4-cinnamoyl-5-hydroxy-1H-pyrazoles. Cyclization of the latter into 5,6-dihydropyrano[2,3-c]pyrazol-4-ones proceeds in very low yields upon treatment with concentrated sulfuric acid. 1,6-Diphenyl-1H-pyrano[2,3-c]pyrazol-4-one was synthesized by reaction of 4-acetyl-5-hydroxy-1-phenyl-1H-pyrazole with benzoyl chloride and lithium bis(trimethylsilyl)amide and subsequent cyclization of the thus obtained 1,3-diketone. NMR-spectroscopic investigations with the obtained 4-substituted 5-hydroxypyrazoles and their precursors regarding their tautomeric behavior in various solvents are presented. The cyclocondensation of (2E)-1-[5-hydroxy-3-methyl-1-(phenylmethyl)-1H-pyrazol-4-yl]-3-phenyl-2-propen-1-one gave 3-methyl-6-phenyl-1-(phenylmethyl)-1H-pyrano[2,3-c]pyrazol-4-one, however in only 2% yield. In the experiment, the researchers used 2-Methyl-1H-pyrazol-3(2H)-one(cas: 3310-35-8Electric Literature of C4H6N2O)

2-Methyl-1H-pyrazol-3(2H)-one(cas: 3310-35-8) 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. Electric Literature of C4H6N2O

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

Recommanded Product: 474432-62-7On October 8, 2020 ,《Redox-Neutral Photocatalytic C-H Carboxylation of Arenes and Styrenes with CO2》 was published in Chem. The article was written by Schmalzbauer, Matthias; Svejstrup, Thomas D.; Fricke, Florian; Brandt, Peter; Johansson, Magnus J.; Bergonzini, Giulia; Koenig, Burkhard. The article contains the following contents:

A redox-neutral CH carboxylation of arenes and styrenes using a photocatalytic approach was described for the synthesis of aryl/unsaturated-carboxylic acids RCOOH [R = 1-naphthyl, CH=CHPh, 5-cyano-2-thienyl, etc.]. Upon blue-light excitation, the anthrolate anion photocatalyst was able to reduce many aromatic compounds to their corresponding radical anions, which react with CO2 to afford carboxylic acids. High-throughput screening and computational anal. suggest that a correct balance between electron affinity and nucleophilicity of substrates was essential. This novel methodol. enabled the carboxylation of numerous aromatic compounds, including many that were not tolerated in classical carboxylation chem. Over 50 examples of CH functionalizations using CO2 or ketones illustrated a broad applicability. The experimental process involved the reaction of Pyrazolo[1,5-a]pyridine-7-carboxylic acid(cas: 474432-62-7Recommanded Product: 474432-62-7)

Pyrazolo[1,5-a]pyridine-7-carboxylic acid(cas: 474432-62-7) 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. Recommanded Product: 474432-62-7

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