Category: pyrazoles-derivatives

Feng, Yangbo published the artcileDiscovery of Substituted 4-(Pyrazol-4-yl)-phenylbenzodioxane-2-carboxamides as Potent and Highly Selective Rho Kinase (ROCK-II) Inhibitors, Name: 1H-Pyrazole-4-boronic acid, the publication is Journal of Medicinal Chemistry (2008), 51(21), 6642-6645, database is CAplus and MEDLINE.

The identification of a new class of potent and selective ROCK-II inhibitors is presented. Compound SR-3677 (I) had an IC₅₀ of ∼3 nM in enzyme and cell based assays and had an off-target hit rate of 1.4% against 353 kinases, and inhibited only 3 out of 70 nonkinase enzymes and receptors. Pharmacol. studies showed that I was efficacious in both, increasing ex vivo aqueous humor outflow in porcine eyes and inhibiting myosin light chain phosphorylation.

Journal of Medicinal Chemistry published new progress about 763120-58-7. 763120-58-7 belongs to pyrazoles-derivatives, auxiliary class Pyrazole,Boronic acid and ester,Boronic Acids,Boronic acid and ester, name is 1H-Pyrazole-4-boronic acid, and the molecular formula is C3H5BN2O2, Name: 1H-Pyrazole-4-boronic acid.

Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics

Sessions, E. Hampton published the artcileBenzimidazole- and benzoxazole-based inhibitors of Rho kinase, Safety of 1H-Pyrazole-4-boronic acid, the publication is Bioorganic & Medicinal Chemistry Letters (2008), 18(24), 6390-6393, database is CAplus and MEDLINE.

Inhibitors of Rho kinase have been developed based on two distinct scaffolds, benzimidazoles, and benzoxazoles. SAR studies and efforts to optimize the initial lead compounds are described. Novel selective inhibitors of ROCK-II with excellent potency in both enzyme and cell-based assays were obtained. These inhibitors possess good microsomal stability, low cytochrome P 450 inhibitions and good oral bioavailability.

Bioorganic & Medicinal Chemistry Letters published new progress about 763120-58-7. 763120-58-7 belongs to pyrazoles-derivatives, auxiliary class Pyrazole,Boronic acid and ester,Boronic Acids,Boronic acid and ester, name is 1H-Pyrazole-4-boronic acid, and the molecular formula is C6H3ClFNO2, Safety of 1H-Pyrazole-4-boronic acid.

Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics

Ma, Xue-lin published the artcileCondensation reaction of aromatic aldehydes and 1-phenyi-3-methyl-4-benzoyl-pyrazolone catalysted by phosphotungstic acid loaded on 404 organic support, Name: 4-Benzoyl-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one, the publication is Huaxue Shiji (2014), 36(7), 646-650, database is CAplus.

Many loaded-catalysts are applied to the Mannich reaction, but they have disadvantages such as low yield, unstability of loaded rate and asking for long time. 404 Organic support loaded phosphotungstic acid was synthesized by the reaction of 404 organic support and phosphotungstic acid in CC14. The effects of different reaction conditions on the yields were investigated. The condensation reaction of aromatic aldehydes and 1-phenyl-3-methyl-4-benzoyl-pyrazolone was catalyzed by 404 organic support loaded phosphotungstic acid. Simultaneously the products were determined by IR, ¹HNMR and elemental anal. The catalyst was provided with stable cubic crystal spatial structure and good dispersion. This protocol has advantages of stability of loaded rate, short time, mild condition, high yield, high selectivity, simple work-up, environmental friendly procedure and the catalyst can be reused.

Huaxue Shiji published new progress about 4551-69-3. 4551-69-3 belongs to pyrazoles-derivatives, auxiliary class Benzenes, name is 4-Benzoyl-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one, and the molecular formula is C17H14N2O2, Name: 4-Benzoyl-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one.

Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics

Tong, Jin published the artcileProgrammable self-assembly of homo- or hetero-metallomacrocycles using 4-(1H-pyrazolyl-4-yl)pyridine, Recommanded Product: 4-(1H-Pyrazol-4-yl)pyridine, the publication is Chemical Communications (Cambridge, United Kingdom) (2012), 48(43), 5343-5345, database is CAplus and MEDLINE.

The dimetallic [M₂(bpy)₂(NO₃)₂](NO₃)₂ moieties (M = Pd(II) or Pt(II)) react preferentially at the pyrazolyl end of the pyridyl-pyrazole ligand, giving rise to dimetallic corners. Subsequently, the dimetallic corner building blocks featuring two pyridine donors are coordinated by monometallic [M(bpy)(NO₃)₂] moieties (M = Pd(II) or Pt(II)) to form homo- or hetero-metallomacrocycles.

Chemical Communications (Cambridge, United Kingdom) published new progress about 19959-71-8. 19959-71-8 belongs to pyrazoles-derivatives, auxiliary class Pyrazole,Pyridine, name is 4-(1H-Pyrazol-4-yl)pyridine, and the molecular formula is C3H5BN2O2, Recommanded Product: 4-(1H-Pyrazol-4-yl)pyridine.

Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics

Li, Weipeng published the artcileCooperative Au/Ag Dual-Catalyzed Cross-Dehydrogenative Biaryl Coupling: Reaction Development and Mechanistic Insight, Category: pyrazoles-derivatives, the publication is Journal of the American Chemical Society (2019), 141(7), 3187-3197, database is CAplus and MEDLINE.

In the presence of (Me₂S)AuCl and AgOAc, pyrazoles such as 1-phenylpyrazole underwent chemoselective and regioselective oxidative dehydrogenative coupling reactions with fluorinated arenes and pyridines such as 2,3,5,6-tetrafluoropyridine mediated by PhI(OAc)₂ in 1,4-dioxane to yield (fluoroaryl)pyrazoles such as I. The mechanism of the oxidative coupling reaction was studied by determination of the reaction kinetics, kinetic isotope effects, and deuterium exchange, by generation and preparation of gold and silver complexes as potential intermediates, and by DFT calculations of transition state structures and energies for arene metalation, transmetalation, and reductive elimination reactions. Silver acetate is determined to be is the actual catalyst for C-H activation of electron-poor arenes, rather than gold(I) complexes. A mechanism of gold/silver dual catalysis is proposed, in which silver is responsible for the activation of electron-poor fluoroarenes via a concerted metalation-deprotonation pathway, and gold is responsible for the activation of electron-rich pyrazoles via an electrophilic aromatic substitution process. Kinetic studies reveal that C-H activation of pyrazoles by fluoroarylgold complexes is most likely the rate-limiting step.

Journal of the American Chemical Society published new progress about 1268520-92-8. 1268520-92-8 belongs to pyrazoles-derivatives, auxiliary class Other Aromatic Heterocyclic,Chloride, name is 4-Chloro-1-methyl-1H-pyrazolo[3,4-b]pyridine, and the molecular formula is C7H6ClN3, Category: pyrazoles-derivatives.

Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics

Li, Weipeng published the artcileCooperative Au/Ag Dual-Catalyzed Cross-Dehydrogenative Biaryl Coupling: Reaction Development and Mechanistic Insight, Synthetic Route of 930-36-9, the publication is Journal of the American Chemical Society (2019), 141(7), 3187-3197, database is CAplus and MEDLINE.

In the presence of (Me₂S)AuCl and AgOAc, pyrazoles such as 1-phenylpyrazole underwent chemoselective and regioselective oxidative dehydrogenative coupling reactions with fluorinated arenes and pyridines such as 2,3,5,6-tetrafluoropyridine mediated by PhI(OAc)₂ in 1,4-dioxane to yield (fluoroaryl)pyrazoles such as I. The mechanism of the oxidative coupling reaction was studied by determination of the reaction kinetics, kinetic isotope effects, and deuterium exchange, by generation and preparation of gold and silver complexes as potential intermediates, and by DFT calculations of transition state structures and energies for arene metalation, transmetalation, and reductive elimination reactions. Silver acetate is determined to be is the actual catalyst for C-H activation of electron-poor arenes, rather than gold(I) complexes. A mechanism of gold/silver dual catalysis is proposed, in which silver is responsible for the activation of electron-poor fluoroarenes via a concerted metalation-deprotonation pathway, and gold is responsible for the activation of electron-rich pyrazoles via an electrophilic aromatic substitution process. Kinetic studies reveal that C-H activation of pyrazoles by fluoroarylgold complexes is most likely the rate-limiting step.

Journal of the American Chemical Society published new progress about 930-36-9. 930-36-9 belongs to pyrazoles-derivatives, auxiliary class Pyrazole, name is 1-Methylpyrazole, and the molecular formula is C4H6N2, Synthetic Route of 930-36-9.

Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics

Xu, Ying-zi published the artcileDesign and synthesis of thiophene dihydroisoquinolines as novel BACE1 inhibitors, Recommanded Product: (1H-Pyrazol-5-yl)boronic acid, the publication is Bioorganic & Medicinal Chemistry Letters (2013), 23(10), 3075-3080, database is CAplus and MEDLINE.

Utilizing a structure based design approach, combined with extensive medicinal chem. execution, highly selective, potent and novel BACE1 inhibitor I (BACE1 Alpha assay IC₅₀ = 8 nM) was made from a weak μM potency hit in an extremely efficient way. The detailed SAR and general design approaches will be discussed.

Bioorganic & Medicinal Chemistry Letters published new progress about 724710-02-5. 724710-02-5 belongs to pyrazoles-derivatives, auxiliary class Pyrazole,Boronic acid and ester,Pyrazole,Boronic Acids,Boronic acid and ester, name is (1H-Pyrazol-5-yl)boronic acid, and the molecular formula is C8H6KNO4S, Recommanded Product: (1H-Pyrazol-5-yl)boronic acid.

Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics

Xu, Ying-zi published the artcileDesign and synthesis of thiophene dihydroisoquinolines as novel BACE1 inhibitors, Computed Properties of 763120-58-7, the publication is Bioorganic & Medicinal Chemistry Letters (2013), 23(10), 3075-3080, database is CAplus and MEDLINE.

Utilizing a structure based design approach, combined with extensive medicinal chem. execution, highly selective, potent and novel BACE1 inhibitor I (BACE1 Alpha assay IC₅₀ = 8 nM) was made from a weak μM potency hit in an extremely efficient way. The detailed SAR and general design approaches will be discussed.

Bioorganic & Medicinal Chemistry Letters published new progress about 763120-58-7. 763120-58-7 belongs to pyrazoles-derivatives, auxiliary class Pyrazole,Boronic acid and ester,Boronic Acids,Boronic acid and ester, name is 1H-Pyrazole-4-boronic acid, and the molecular formula is C8H10S, Computed Properties of 763120-58-7.

Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics

De Schutter, Joris W. published the artcileNovel bisphosphonate inhibitors of the human farnesyl pyrophosphate synthase, SDS of cas: 763120-58-7, the publication is Bioorganic & Medicinal Chemistry Letters (2010), 20(19), 5781-5786, database is CAplus and MEDLINE.

A structure-based approach was pursued in designing novel bisphosphonate inhibitors of the human farnesyl pyrophosphate synthase (hFPPS). Preliminary SAR and structural evidence for the simultaneous binding of these inhibitors into the isopentenyl pyrophosphate (IPP) and the geranyl pyrophosphate (GPP) substrate sub-pockets of the enzyme are presented.

Bioorganic & Medicinal Chemistry Letters published new progress about 763120-58-7. 763120-58-7 belongs to pyrazoles-derivatives, auxiliary class Pyrazole,Boronic acid and ester,Boronic Acids,Boronic acid and ester, name is 1H-Pyrazole-4-boronic acid, and the molecular formula is C3H5BN2O2, SDS of cas: 763120-58-7.

Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics

Taldone, Tony published the artcilePreparation of a diverse purine-scaffold library via one-step palladium catalyzed cross-coupling, Formula: C3H5BN2O2, the publication is Heterocycles (2013), 87(1), 91-113, database is CAplus.

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

Heterocycles published new progress about 724710-02-5. 724710-02-5 belongs to pyrazoles-derivatives, auxiliary class Pyrazole,Boronic acid and ester,Pyrazole,Boronic Acids,Boronic acid and ester, name is (1H-Pyrazol-5-yl)boronic acid, and the molecular formula is C3H5BN2O2, Formula: C3H5BN2O2.

Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics