pyrazoles-derivatives

Xun, Zhan; Feng, Xian; Wang, Jianjun; Shi, Daqing; Huang, Zhibin published the artcile< Multicomponent Strategy for the Preparation of Pyrrolo[1,2-a]pyrimidine Derivatives under Catalyst-Free and Microwave Irradiation Conditions>, Name: 3-Cyclopropyl-1-methyl-1H-pyrazol-5-amine, the main research area is pyrrolopyrimidine preparation microwave irradiation regioselective; aminopyrazole acetylenedicarboxylate malononitrile multicomponent reaction.

A simple and efficient one-pot procedure has been developed for the construction of pyrrolo[1,2-a]pyrimidines I (R = Me, Et; R1 = H, CH3, C6H5; R2 = Me, Ph, cyclopropyl) via the three-component domino reaction of 5-aminopyrazoles II, acetylenedicarboxylates RCO2CCCO2R and malononitrile under catalyst-free, microwave irradiation conditions. The key step in this transformation is the N-N bond cleavage reaction of the II substrate, which has been reported in this context for the first time in this study. The advantages of this protocol include readily available starting materials, short reaction times and good regioselectivity.

Chinese Journal of Chemistry published new progress about Microwave irradiation. 118430-74-3 belongs to class pyrazoles-derivatives, and the molecular formula is C7H11N3, Name: 3-Cyclopropyl-1-methyl-1H-pyrazol-5-amine.

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

He, Shuwen; Li, Peng; Dai, Xing; McComas, Casey C.; Du, Chunyan; Wang, Ping; Lai, Zhong; Liu, Hong; Yin, Jingjun; Bulger, Paul G.; Dang, Qun; Xiao, Dong; Zorn, Nicolas; Peng, Xuanjia; Nargund, Ravi P.; Palani, Anandan published the artcile< Facile functionalization at the C2 position of a highly substituted benzofuran>, Recommanded Product: 1,3-Dimethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole, the main research area is iodobenzofuran preparation Suzuki coupling; benzofuran preparation.

To expedite an SAR study on C(2) of a highly substituted benzofuran ring system, a method for the preparation of a key precursor, iodide I, was developed. From I, a diverse set of compounds with different substituents at C(2) were prepared efficiently by Suzuki reaction.

Tetrahedron Letters published new progress about Benzofurans Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 1046832-21-6 belongs to class pyrazoles-derivatives, and the molecular formula is C11H19BN2O2, Recommanded Product: 1,3-Dimethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole.

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

Saito, Tetsuji; Obitsu, Tetsuo; Minamoto, Chiaki; Sugiura, Tsuneyuki; Matsumura, Naoya; Ueno, Sonoko; Kishi, Akihiro; Katsumata, Seishi; Nakai, Hisao; Toda, Masa-Aki published the artcile< Pyrazolo[1,5-a]pyrimidines, triazolo[1,5-a]pyrimidines and their tricyclic derivatives as corticotropin-releasing factor 1 (CRF1) receptor antagonists>, Safety of 4-Chloro-2-(methylthio)pyrazolo[1,5-a][1,3,5]triazine, the main research area is pyrazolopyrimidine triazolopyrimidine preparation corticotropin releasing factor receptor antagonist; structure activity relationship CRF receptor antagonist pyrazolopyrimidine triazolopyrimidine.

To identify structurally novel CRF1 receptor antagonists, a series of bicyclic core antagonists, pyrazolo[1,5-a]pyrimidines, e.g. I (X = CH), triazolo[1,5-a]pyrimidines, e.g. I (X = N), imidazo[1,2-a]pyrimidines, e.g. II, and a pyrazolo[1,5-a][1,3,5]triazine, III, were designed, synthesized and evaluated as CRF1 receptor antagonists. Several compounds showed binding affinity (IC50 = 4.2-418 nM) and antagonist activity (EC50 = 4.0-889 nM). Compound I (X = CH) was found to show oral efficacy in an Elevated Plus Maze test in rats. Further chem. modification of them led us to discovery of the tricyclic core antagonists pyrazolo[1,5-a]pyrrolo[3,2-e]pyrimidines, e.g. IV. The discovery process of these compounds is presented, as is the study of the structure-activity relationship.

Bioorganic & Medicinal Chemistry published new progress about Aromatic amines Role: RCT (Reactant), RACT (Reactant or Reagent). 54346-19-9 belongs to class pyrazoles-derivatives, and the molecular formula is C6H5ClN4S, Safety of 4-Chloro-2-(methylthio)pyrazolo[1,5-a][1,3,5]triazine.

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

Pan, Jinpeng; Yin, Yan; Zhao, Lianhua; Feng, Yangbo published the artcile< Discovery of (S)-6-methoxy-chroman-3-carboxylic acid (4-pyridin-4-yl-phenyl)-amide as potent and isoform selective ROCK2 inhibitors>, Synthetic Route of 936250-20-3, the main research area is ROCK2 inhibitor selectivity methoxychromancarboxylatepyridin phenylamide; Chromans; Computational theoretical studies; Isoform selectivity; ROCK; ROCK inhibitors.

ROCK1 and ROCK2 are highly homologous isoforms. Accumulated studies indicate that they have distinct different functions, and the development of isoform selective ROCK inhibitors will pave new roads for the treatment of various diseases. In this work, a series of amide-chroman derivatives were synthesized and biol. evaluated in order to develop potent and isoform selective ROCK2 inhibitors. Remarkably, (S)-6-methoxy-chroman-3-carboxylic acid (4-pyridin-4-yl-phenyl)-amide ((S)-7c) possessed ROCK2 inhibitory activity with an IC50 value of 3 nM and 22.7-fold isoform selectivity (vs. ROCK1). Mol. docking indicated that hydrophobic interactions were the key element for the high potency and isoform selectivity of (S)-7c. The binding free energies predicted by MM/GBSA were in good agreement with the exptl. bioactivities, and the anal. of individual energy terms suggested that residue Lys105 in ROCK1 or Lys121 in ROCK2 was the key residue for the isoform selectivity of (S)-7c.

Bioorganic & Medicinal Chemistry published new progress about Free energy of binding. 936250-20-3 belongs to class pyrazoles-derivatives, and the molecular formula is C10H17BN2O2, Synthetic Route of 936250-20-3.

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

Huang, Qinhua; Johnson, Ted W.; Bailey, Simon; Brooun, Alexei; Bunker, Kevin D.; Burke, Benjamin J.; Collins, Michael R.; Cook, Andrew S.; Cui, J. Jean; Dack, Kevin N.; Deal, Judith G.; Deng, Ya-Li; Dinh, Dac; Engstrom, Lars D.; He, Mingying; Hoffman, Jacqui; Hoffman, Robert L.; Johnson, Patrick S.; Kania, Robert S.; Lam, Hieu; Lam, Justine L.; Le, Phuong T.; Li, Qiuhua; Lingardo, Laura; Liu, Wei; Lu, Melissa West; McTigue, Michele; Palmer, Cynthia L.; Richardson, Paul F.; Sach, Neal W.; Shen, Hong; Smeal, Tod; Smith, Graham L.; Stewart, Albert E.; Timofeevski, Sergei; Tsaparikos, Konstantinos; Wang, Hui; Zhu, Huichun; Zhu, Jinjiang; Zou, Helen Y.; Edwards, Martin P. published the artcile< Design of Potent and Selective Inhibitors to Overcome Clinical Anaplastic Lymphoma Kinase Mutations Resistant to Crizotinib>, COA of Formula: C11H19BN2O2, the main research area is crizotinib resistant lymphoma kinase mutation inhibitor preparation SAR.

Crizotinib, an anaplastic lymphoma kinase (ALK) receptor tyrosine kinase inhibitor approved by the U.S. Food and Drug Administration in 2011, is efficacious in ALK and ROS pos. patients. Under pressure of crizotinib treatment, point mutations arise in the kinase domain of ALK, resulting in resistance and progressive disease. The successful application of both structure-based and lipophilic-efficiency-focused drug design resulted in aminopyridine (I), which was potent across a broad panel of engineered ALK mutant cell lines and showed suitable preclin. pharmacokinetics and robust tumor growth inhibition in a crizotinib-resistant cell line (H3122-L1196M).

Journal of Medicinal Chemistry published new progress about Antitumor agents. 1046832-21-6 belongs to class pyrazoles-derivatives, and the molecular formula is C11H19BN2O2, COA of Formula: C11H19BN2O2.

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

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 published the artcile< Chemical Validation of DegS As a Target for the Development of Antibiotics with a Novel Mode of Action>, Computed Properties of 54346-19-9, the main research area is DegS drug target antibiotic preparation; antibiotics; drug discovery; small molecules; synergism; synthesis.

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.

ChemMedChem published new progress about Antibacterial agent resistance. 54346-19-9 belongs to class pyrazoles-derivatives, and the molecular formula is C6H5ClN4S, Computed Properties of 54346-19-9.

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

Marin-Luna, Marta; Claramunt, Rosa M.; Nieto, Carla I.; Alkorta, Ibon; Elguero, Jose; Reviriego, Felipe published the artcile< Theoretical NMR study of polymorphism in crystal structures of azoles and benzazoles>, Recommanded Product: 4-Bromo-3-phenyl-1H-pyrazole, the main research area is solid state NMR polymorphism crystal structure azoles benzazoles; GIPAW; NMR; azoles; benzazoles; polymorphism; solid state; tautomerism.

The NMR chem. shifts of two azoles and one benzazole whose crystal structures present polymorphism have been computed using the GIPAW approach. 15N and 13C nuclei have been studied. Statistical anal. of the computed 13C and 15N chem. shifts indicates that the GIPAW chem. shifts reproduce with a high degree of accuracy those exptl. reported. This methodol. can be used to identify other polymorphic crystal structures.

Magnetic Resonance in Chemistry published new progress about Bond angle, torsional. 13808-65-6 belongs to class pyrazoles-derivatives, and the molecular formula is C9H7BrN2, Recommanded Product: 4-Bromo-3-phenyl-1H-pyrazole.

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

Cabildo, Pilar; Claramunt, Rosa Maria published the artcile< Carbon-13 NMR chemical shifts of N-unsubstituted and N-methylpyrazole derivatives>, Recommanded Product: 4-Bromo-3-phenyl-1H-pyrazole, the main research area is NMR pyrazole derivative; methylpyrazole derivative NMR.

13C shielding data for 100 derivatives of pyrazole are reported. These include Me, Et, Pr, tert-Bu, Ph, hydroxymethyl, carboxyl, ethoxycarbonyl, cyano, amino, hydrazino, nitro, azido, chloro, bromo and iodo groups as substituents on the ring carbon atoms.

Organic Magnetic Resonance published new progress about NMR (nuclear magnetic resonance). 13808-65-6 belongs to class pyrazoles-derivatives, and the molecular formula is C9H7BrN2, Recommanded Product: 4-Bromo-3-phenyl-1H-pyrazole.

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

Khan, M. A.; Mustafa, A. published the artcile< Ipso substitution in heterocyclic compounds. Bromination of pyrazole-4-carboxaldehydes>, Recommanded Product: 4-Bromo-3-phenyl-1H-pyrazole, the main research area is pyrazolecarboxaldehyde bromination.

Bromination of pyrazolecarboxaldehydes I (R1 = H, Me; R2 = H, NO2) with Br in AcOH at room temperature for 30 min gave 46-66% bromopyrazolecarboxaldehydes II.

Pharmazie published new progress about Bromination. 13808-65-6 belongs to class pyrazoles-derivatives, and the molecular formula is C9H7BrN2, Recommanded Product: 4-Bromo-3-phenyl-1H-pyrazole.

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

Dang, Qun; Brown, Brian S.; Erion, Mark D. published the artcile< 5-Aminopyrazoles as Dienophiles in the Inverse Electron Demand Diels-Alder Reactions of 2,4,6-Tris(ethoxycarbonyl)-1,3,5-triazine: Syntheses of Pyrazolopyrimidines>, Computed Properties of 118430-74-3, the main research area is pyrazolopyrimidine preparation; cycloaddition ethoxycarbonyltriazine aminopyrazole; triazine trisethoxycarbonyl cycloaddition aminopyrazole; pyrazole amino cycloaddition trisethoxycarbonyltriazine.

[4 + 2] Cycloaddition reactions of 2,4,6-tris(ethoxycarbonyl)-1,3,5-triazine with 5-aminopyrazoles are reported. This methodol. is suitable for the one-step synthesis of highly substituted pyrazolo[3,4-d]pyrimidines.

Journal of Organic Chemistry published new progress about Diels-Alder reaction, inverse-electron-demand. 118430-74-3 belongs to class pyrazoles-derivatives, and the molecular formula is C7H11N3, Computed Properties of 118430-74-3.

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