Category: pyrazoles-derivatives

Jain, Rama published the artcileDiscovery of Potent and Selective RSK Inhibitors as Biological Probes, Related Products of pyrazoles-derivatives, the publication is Journal of Medicinal Chemistry (2015), 58(17), 6766-6783, database is CAplus and MEDLINE.

While the p90 ribosomal S6 kinase (RSK) family has been implicated in multiple tumor cell functions, the full understanding of this kinase family has been restricted by the lack of highly selective inhibitors. A bis-phenol pyrazole was identified from high-throughput screening as an inhibitor of the N-terminal kinase of RSK2. Structure-based drug design using crystallog., conformational anal., and scaffold morphing resulted in highly optimized difluorophenol pyridine inhibitors of the RSK kinase family as demonstrated cellularly by the inhibition of YB1 phosphorylation. These compounds provide for the first time in vitro tools with an improved selectivity and potency profile to examine the importance of RSK signaling in cancer cells and to fully evaluate RSK as a therapeutic target.

Journal of Medicinal Chemistry 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, Related Products of pyrazoles-derivatives.

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

Doba, Takahiro published the artcileHomocoupling-free iron-catalyzed twofold C-H activation/cross-couplings of aromatics via transient connection of reactants, HPLC of Formula: 930-36-9, the publication is Nature Catalysis (2019), 2(5), 400-406, database is CAplus.

Herein, an efficient strategy was developed for the synthesis of biaryls and (aryl)alkenamides Ar(R)C=C(R¹)C(O)NHAr¹ [R = Me; R¹ = Me; RR¹ = (CH₂)₄; Ar = 3,4-Cl₂C₆H₃, 5-Ph-2-thienyl, benzothiophen-2-yl, etc.; Ar¹ = 8-quinolyl] via iron-catalyzed twofold C-H activation/cross-coupling of arenes with alkenyl/aryl carboxamides. A transient connection of two reactants by an anionic group appended to one reactant helped to achieve this goal under mildly oxidative iron-catalyzed conditions, through the formation of a productive heteroleptic R¹-M-R² intermediate. An N-(quinolin-8-yl)amide anion was utilized for the temporary connection and cross-coupled a stoichiometric mixture of aromatics in high yield without any trace of homocoupling products. A short-step synthesis of several donor/acceptor thiophene compounds and carbon/sulfur-bridged flat conjugated systems illustrated the utility of this method to streamline organic synthesis.

Nature Catalysis 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, HPLC of Formula: 930-36-9.

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

Usui, Yoshiro published the artcileFungicides. XIII. Synthesis and antifungal activity of halogen-substituted phenylhydrazine derivatives and related compounds, Product Details of C10H9ClN2O, the publication is Yakugaku Zasshi (1967), 87(1), 43-65, database is CAplus and MEDLINE.

cf. CA 67: 11452h. Various kinds of halo-substituted phenylhydrazine derivatives and related compounds were synthesized and their bactericidal and fungicidal activities tested. Thus, 3,4-dichlorophenylhydrazine was dissolved in 10 volumes EtOH, equimolar HNO3 added, and the whole solution stirred 1 hr. to give 86% nitrate, m. 182° (decomposition) (EtOH). Similarly the sulfate, brown, m. 198° (decomposition) (H2O), was prepared in 44% yield. Also prepared were the following I (X, R, recrystallization solvent, and m.p. given): 2-Cl, CHO, EtOH, 148-9°; 3,4-di-Cl, CHO, EtOH, 136-7°; 4-Cl, C11H23CO, MeOH, 97-9°; 3,4-di-Cl, EtCO, C6H6, 149-50°; 3,4-di-Cl, PrCO, ligroine, 119-20°; 3,4-di-Cl, BuCO, C6H6, 120-1°; 3,4-di-Cl, AmCO, C6H6, 108-9°; 3,4-di-Cl, C6H13CO, ligroine, 94-5°; 3,4-di-Cl, C7H15CO, MeOH, 92-3°; 3,4-di-Cl, C8H17CO, ligroine, 86-7°; 3,4-di-Cl, C9H19CO, ligroine, 86-7°; 3,4-di-Cl, C11H23CO, ligroine, 84-7°; 3,4-di-Cl, C13H27CO, EtOH, 91-2°; 3,4-di-Cl, C15H31CO, EtOH, 97-8°; 3,4-di-Cl, C17H35CO, EtOH, 90-1°; 3,4-di-Cl, ClCH2CO (yellow), EtOH, 149-50°; 3,4-di-Cl, AcCH2CH2CO, C6H6, 135-6°; 3,4-di-Cl, HO2C(CH2)2CO (gray), H2O, 167-8°; 3,4-di-Cl, HO2C(CH2)4CO, AcOEt-C6H6, 133-5° (decomposition); 3,4-di-Cl, Bz, EtOH, 176-7°; 3,4-di-Cl, 3,4-di-chlorobenzoyl, EtOH, 205-6°; 3,4-di-Cl, 4-nitrobenzoyl (yellow), EtOH, 222-3°; 3,4-di-Cl, 2-hydroxybenzoyl, C6H6, 153-4°; 3,4-di-Cl, 2,4-dichlorophenoxyacetyl, EtOH, 199-200°; 3,4-di-Cl, p-MeC6H4SO2, EtOH, 153° (decomposition); 3,4-di-Cl, PhCH2O2CNHCH(CO2H)CH2CO, EtOH-ligroine, 155-8° (decomposition); 3,4-di-Cl, PhCH2O2CNHCH(CO2H)(CH2)2CO, EtOH-ligroine, 169-70° (decomposition); 3,4-di-Cl, NH2CS (brown) EtOH, 197-8° (decomposition); 2,6-di-Cl, NH2CS, MeOH, 223° (decomposition); 2,3-di-Cl, NH2CS (pale pink) EtOH, 200° (decomposition); 2,4,6-tri-Cl, NH2CS, EtOH, 241 (decomposition); 2,4,5-tri-Cl, NH2CS, EtOH, 226° (decomposition); 3,4-di-Cl, NH2CO (yellow), EtOH, 162-3°; 2,5-di-Cl, NH2CO, EtOH, 224° (decomposition); 4-Cl, MeNHCO, MeOH, 184-5°; 4-Cl, EtNHCO, MeOH, 162-3°; 4-Cl, PhNHCO, MeOH, 192-3°; 4-Cl, p-MeOC6H4NHCO, MeOH, 174-5°; 4-Cl, p-EtOC6H4NHCO, MeOH, 172-3°; 4-Cl, p-AcOC6H4NHCO, MeOH, 175-6°; 4-Cl, PhCH2NHCO, MeOH, 162-3°; 4-Cl, 1-naphthylacrbamoyl, MeOH, 245-6° (decomposition); 4-Cl, 2-ClC6H4NHCO, MeOH, 181-2°; 4-Cl, 3-ClC6H4NHCO, MeOH, 174-5°; 4-Cl, 4-ClC6H4NHCO, MeOH, 213-14°; 3,4-di-Cl, MeNHCO, MeOH, 192-3°; 3,4-di-Cl, EtNHCO, MeOH, 170-1°; 3,4-di-Cl, PhNHCO, MeOH, 202-3°; 3,4-di-Cl, p-OMeC6H4NHCO, MeOH, 192-3°; 3,4-di-Cl, p-EtOC6H4NHCO, MeOH, 207-8°; 3,4-di-Cl, p-AcOC6H4NHCO, MeOH, 221-2°; 3,4-di-Cl, PhCH2NHCO, MeOH, 181.5-2.5°; 3,4-di-Cl, 1-naphthylcarbamoyl, MeOH, 242-3° (decomposition); 3,4-di-Cl, 2-ClC6H4NHCO, C6H6, 195-6°; 3,4-di-Cl, 3-ClC6H4NHCO, C6H6, 203-4°; 3,4-di-Cl, 4-ClC6H4NHCO, C6H6, 205-6°; 2-Cl, EtO2C, ligroine, 78-9°; 4-Cl, EtO2C, ligroine, 88-9°; 2,5-di-Cl, EtO2CO, ligroine, 77-9°; 3,4-di-Cl, EtO2C, ligroine, 108-10°; 2,4-di-Cl, EtO2C (pale yellow), ligroine, 68-9°; 2-Cl, EtS2C (pale green), EtOH, 123-4°; 4-Cl, EtS2C, ligroine, 133-4°; 2,5-di-Cl, EtS2C, ligroine, 145-6°; 3,4-di-Cl, EtS2C (yellow), dilute EtOH, 113-14°; 2,6-di-Cl, EtS2C, ligroine, 128-9°; 4-Cl, BzCH2S2C, EtOH, 177° (decomposition); 3,4-di-Cl, BzCH2S2C (yellow), dilute EtOH, 158-9° (decomposition); 4-Cl, NH2C(:NH) (sulfate), dilute EtOH, 218-19° (decomposition); 3,4-di-Cl, NH2C(:NH) (sulfate), H2O, 235-7° (decomposition); 4-Cl, II (hydriodide) (pale yellow), AcOEt-EtOH, 192-3°; 4-Cl, (OEt)2P(O) (pale yellow), ligroine, 135-6°; 3,4-di-Cl, (OEt)2P(O), ligroine, 105-7°. Also prepared were the following III (X, R, recrystallization solvent, and m.p. given); 4-Cl, C11H23, MeOH, 86-8°; 3,4-di-Cl, C13H27, EtOH, 78-81°; 3,4-di-Cl, C15H31, EtOH, 78-9°; 4-Cl, PhNH, AcOEt, 194-5°. Also prepared was 3,4-Cl2C6H3N(CO2Et)NHAc, [pink, m.99-100° (dilute EtOH)]. Also prepared were the following IV (X, R, recrystallization solvent, and m.p. given): 3,4-di-Cl, 2-nitro-5-furyl (reddish purple), EtOH, 199-200° (decomposition); 4-Cl, HOCH2(CH2OH)4, dilute EtOH, 151-2°; 3,4-di-Cl, HOCH2(CH2OH)4 (gray), dilute EtOH, 168-9° (decomposition). Also prepared were the following V (X, recrystallization solvent, and m.p. given): 2-Cl, EtOH, 231° (decomposition); 3,4-di-Cl, dilute EtOH, 215° (decomposition); 2,4-di-Cl, EtOH, 240° (decomposition); 2,5-di-Cl, AcOEt, 263-4°. Also prepared were the following VI (X, R, color, and m.p. given; all being recrystallized from EtOH): 3,4-di-Cl, 2-hydroxy-1-naphthyl, red, 155-6°; 3,4-di-Cl, 2-HO-5-ClC6H3, dark yellow, 146-8°; 3,4-di-Cl, 2-OH-5-MeC6H4, yellow, 125-6°; 3,4-di-Cl, 2-HO-3-(3,4-Cl2C6H3N:N)-5-MeC6H2, dark yellow, 211-13°; 3,4-di-Cl, 2-HO-5-PhC6H3, dark yellow, 162-3°; 3,4-di-Cl, PhNH, yellow, 93-5°; 3,4-di-Cl, 3-ClC6H4NH, dark yellow, 134-5° (decomposition); 3,4-di-Cl, 2-ClC6H4NH, yellow, 103-4°; 3,4-di-Cl, 4-ClC6H4NH, yellow, 142° (decomposition); 3,4-di-Cl, 4-BrC6H4NH, pale brown, 141° (decomposition); 3,4-di-Cl, 2,3-Cl2C6H3NH, yellow, 154° (decomposition); 3,4-di-Cl, 2,5-di-Cl2C6H3NH, dark yellow, 146-7°; 3,4-di-Cl, 2,4-Cl2C6H3NH, yellow, 118-20° (decomposition); 3,4-di-Cl, 3,5-Cl2C6H3NH, (brown, 128-30°; 3,4-di-Cl, 3,4-Cl2C6H3NH, yellow, 151°; 3,4-di-Cl, 2,4,5-Cl3C6H2NH, yellow, 164° (decomposition); 2,6-di-Cl, 3,4-Cl2C6H3NH, -, 107-8°; 3,4-di-Cl, 4-(3,4-Cl2C6H3N:N)C6H4NH, yellow, 175-6° (decomposition). Similarly prepared was VII, yellow, m. 229-30° (decomposition) (EtOH). Also prepared were 2-methyl-4-(3,4-dichlorophenyl)-1,3,4-oxadiazol-5-one, m. 136-9° (EtOH), 3,4-Cl2C6H3NHCO(CH2)2Ac, m. 119-20° (EtOH), 4-ClC6H4CH2(NH)2COPh, m. 140-1° (EtOH), (4-ClC6H4CH2)2NNHCOPh, m. 180-2° (EtOH), (2-ClC6H4CH2)2NNHCOPh, m. 154-5° (EtOH), (3,4-Cl2C6H3CH2)2NNHCOPh, m. 145-6° (EtOH), (2-ClC6H4CH2)2NNHCH2C6H4Cl-p, m. 119-20° (EtOH), (2-ClC6H4CH2)2NNHAc, m. 128-9° (C6H6), and 3,4-Cl2C6H3CH2CH2(NH)2Ac, m. 140-1° (C6H6). Results of antibacterial and antifungal tests of all above compounds against Piricularia oryzae, Colletotrichum lagenarium, Xanthomonas oryzae, Fusarium oxysporum, Alternaria kikuchiana, Glomerella cingulata, Gibberella fujikuroi, Phytophthora infestans, Candida albicans, Trichophyton mentagrophytes, Corticium sasakii, Ophiobolus miyabeanus, Bacillus subtilis, Staphylococcus aureus, and Saccharomyces cerevisiae were also described.

Yakugaku Zasshi published new progress about 14580-22-4. 14580-22-4 belongs to pyrazoles-derivatives, auxiliary class Organic Pigment, name is 1-(2-Chlorophenyl)-3-methyl-5-pyrazolone, and the molecular formula is C9H5ClO2, Product Details of C10H9ClN2O.

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

Usui, Yoshiro published the artcileFungicides. XII. Synthesis and antifungal activity of halogen-substituted phenylpyrazolone derivatives, HPLC of Formula: 14580-22-4, the publication is Yakugaku Zasshi (1967), 87(1), 38-42, database is CAplus and MEDLINE.

cf. CA 64: 14181e. A mixture of 1.5 g. I (X = 2,4,5-tri-Cl) and 0.9 g. Et acetoacetate is added to a mixture of 5 ml. AcOH and 5 ml. H2O, the whole heated 2 hrs., and 35 ml. H2O added to give 81% II, yellow needles, m. 58-60° (EtOH). I (0.02 mole) is heated in a mixture of 25 ml. AcOH and 10 ml. H2O with 0.02 mole Et acetoacetate for 2 hrs., the mixture evaporated in vacuo, the residue heated 5 hrs. with 25 ml. AcOH, evaporated in vacuo, and H2O added to the residue to give the following III (X, m.p., and % yield given): 2,3-di-Cl, 174-5°, 18; 2,6-di-Cl (red), 206°, 46; 2,4,5-tri-Cl (yellow), 199°, 81; 2,6-di-Br (yellow), 200-1°, 49. I (0.02 mole) and 0.02 mole Ac2O are added to 30 ml. C6H6, the whole boiled 3 hrs., cooled, and the precipitate recrystallized (C6H6) to give the following IV (X, m.p., and % yield given): 2-Cl, 118°, 62; 3-Cl, 131-2°, 62; 2,3-di-Cl, 136°, 73; 2,5-di-Cl, 159°, 97; 2,6-di-Cl, 153-5°, 93; 3,4-di-Cl, 168-71°, 77; 2,4,6-tri-Cl, 158°, 95.5; 2,6-di-Br, 158-61°, 58; 4-I, 159°, 74. PCl3 (1 mole) is dropped into a mixture of 1 mole each of IV and Et acetoacetate, the whole warmed 1.5 hrs. and poured into iced H2O, and the precipitate recrystallized from EtOH to give the following V (X, m.p., and % yield given): 2-Cl, 183-5°, 53; 3-Cl, 183°, 45; 4-Cl, 219-21°, 89; 2,3-di-Cl, 231-2°, 60; 2,6-di-Cl, 211-13°, 67; 3,4-di-Cl, yellow 208-9°, 76; 2,4,5-tri-Cl, yellow, 178-80°, 49; 2,4,6-tri-Cl, 193-4°, 49; 2,6-di-Br, 223-4°, 6.2; 4-I (brown), 214-16°, 37. Na (2.3 g.) is added to 40 ml. EtOH, boiled 17 hrs. with 6.2 g. Et cyanoacetate (VI) and 7.1 g. 4-chlorophenylhydrazine, and the mixture evaporated in vacuo. To the residue is added 120 ml. H2O, washed with Et2O, the residual aqueous solution neutralized with AcOH, and the solid recrystallized from MeOH to give 2.3 g. 1-(4-chlorophenyl)-3-aminopyrazolin-5-one, dark yellow needles, m. 169°. The use of Et cyclohexanone-2-carboxylate instead of VI in the above reaction gives 70% 2-(4-chlorophenyl)-4,5,6,7-tetrahydro-3-indazolinone, m. 186-7° (EtOH). Similarly prepared is 1-(4-chlorophenyl)-4,5,6,7-tetrahydro-3-indazolinone, m. 217-19° (EtOH). The relation between the structure of these compounds and their antifungal activity was examined using Corticium sasakii. It was found that antifungal activity tended to become weaker in the order phenylhydrazines > β-acetylphenylhydrazines > phenylhydrazones > phenylpyrazolones, and with the increasing number of halogens substituted.

Yakugaku Zasshi published new progress about 14580-22-4. 14580-22-4 belongs to pyrazoles-derivatives, auxiliary class Organic Pigment, name is 1-(2-Chlorophenyl)-3-methyl-5-pyrazolone, and the molecular formula is C6H13I, HPLC of Formula: 14580-22-4.

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

Turanov, Alexander N. published the artcileTripodal organophosphorus ligands as synergistic agents in the solvent extraction of lanthanides(III). Structure of mixed complexes and effect of diluents, Computed Properties of 4551-69-3, the publication is Polyhedron (2019), 276-288, database is CAplus.

The solvent extraction of lanthanides (III) (except for Pm) from chloride medium (at μ = 0.1) into an organic phase containing 4-benzoyl-3-methyl-1-phenyl-5-pyrazolone (HPy) and neutral tripodal ligands on the triphenylphosphine oxide platform with anchored carbamoyl side arms (2-R₂NC(O)CH₂OC₆H₄)₃PO, where R = Bu (L1) and cyclo-Hex (L2) has been studied. A considerable synergistic effect (up to 10⁷) has been observed in the presence of neutral ligands L1 or L2 in the organic phase containing HPy. The stoichiometry of the Ln(III) extracted species has been determined by slope anal. and the equilibrium constants have been calculated It has been found that the lanthanides(III) ions are extracted with mixtures of HPy and neutral ligands L1 or L2 in toluene as LnPy₃L species. The [LaPy₃(H₂O)₂], and new [LaPy₃(L1)] and [LaPy₃(L2)] complexes have been synthesized and characterized via elemental anal. and IR spectroscopy. Solution structure of the above complexes has been examined by IR and multinuclear (¹H, ¹³C, and ³¹P) NMR spectroscopy in toluene-d₈ and CDCl₃. The effect of diluents on synergistic extraction and the solution structure of mixed complexes are discussed.

Polyhedron 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 C11H14O2, Computed Properties of 4551-69-3.

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

Hanna, Samer J. published the artcileThe Role of Rho-GTPases and actin polymerization during Macrophage Tunneling Nanotube Biogenesis, Recommanded Product: 4-(5-(4-Methoxyphenyl)-3-phenyl-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonamide, the publication is Scientific Reports (2017), 7(1), 1-16, database is CAplus and MEDLINE.

Macrophage interactions with other cells, either locally or at distances, are imperative in both normal and pathol. conditions. While soluble means of communication can transmit signals between different cells, it does not account for all long distance macrophage interactions. Recently described tunneling nanotubes (TNTs) are membranous channels that connect cells together and allow for transfer of signals, vesicles, and organelles. However, very little is known about the mechanism by which these structures are formed. Here we investigated the signaling pathways involved in TNT formation by macrophages using multiple imaging techniques including super-resolution microscopy (3D-SIM) and live-cell imaging including the use of FRET-based Rho GTPase biosensors. We found that formation of TNTs required the activity and differential localization of Cdc42 and Rac1. The downstream Rho GTPase effectors mediating actin polymerization through Arp2/3 nucleation, Wiskott-Aldrich syndrome protein (WASP) and WASP family verprolin-homologous 2 (WAVE2) proteins are also important, and both pathways act together during TNT biogenesis. Finally, TNT function as measured by transfer of cellular material between cells was reduced following depletion of a single factor demonstrating the importance of these factors in TNTs. Given that the characterization of TNT formation is still unclear in the field; this study provides new insights and would enhance the understanding of TNT formation towards investigating new markers.

Scientific Reports published new progress about 71203-35-5. 71203-35-5 belongs to pyrazoles-derivatives, auxiliary class GPCR/G Protein,Ras, name is 4-(5-(4-Methoxyphenyl)-3-phenyl-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonamide, and the molecular formula is C22H21N3O3S, Recommanded Product: 4-(5-(4-Methoxyphenyl)-3-phenyl-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonamide.

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

Matthews, Thomas P. published the artcileDesign and evaluation of 3,6-di(hetero)aryl imidazo[1,2-a]pyrazines as inhibitors of checkpoint and other kinases, Quality Control of 724710-02-5, the publication is Bioorganic & Medicinal Chemistry Letters (2010), 20(14), 4045-4049, database is CAplus and MEDLINE.

A range of 3,6-di(hetero)aryl imidazo[1,2-a]pyrazine ATP-competitive inhibitors, e.g. I and II, of CHK1 were developed by scaffold hopping from a weakly active screening hit. Efficient synthetic routes for parallel synthesis were developed to prepare analogs with improved potency and ligand efficiency against CHK1. Kinase profiling showed that the imidazo[1,2-a]pyrazines could inhibit other kinases, including CHK2 and ABL, with equivalent or better potency depending on the pendant substitution. These 3,6-di(hetero)aryl imidazo[1,2-a]pyrazines appear to represent a general kinase inhibitor scaffold.

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 C3H5BN2O2, Quality Control of 724710-02-5.

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

Matthews, Thomas P. published the artcileDesign and evaluation of 3,6-di(hetero)aryl imidazo[1,2-a]pyrazines as inhibitors of checkpoint and other kinases, SDS of cas: 763120-58-7, the publication is Bioorganic & Medicinal Chemistry Letters (2010), 20(14), 4045-4049, database is CAplus and MEDLINE.

A range of 3,6-di(hetero)aryl imidazo[1,2-a]pyrazine ATP-competitive inhibitors, e.g. I and II, of CHK1 were developed by scaffold hopping from a weakly active screening hit. Efficient synthetic routes for parallel synthesis were developed to prepare analogs with improved potency and ligand efficiency against CHK1. Kinase profiling showed that the imidazo[1,2-a]pyrazines could inhibit other kinases, including CHK2 and ABL, with equivalent or better potency depending on the pendant substitution. These 3,6-di(hetero)aryl imidazo[1,2-a]pyrazines appear to represent a general kinase inhibitor scaffold.

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

Sandhu, Bhupinder published the artcileAssessment of computational tools for predicting supramolecular synthons, Quality Control of 3553-12-6, the publication is Chemistry (Basel, Switzerland) (2021), 3(2), 612-629, database is CAplus.

The ability to predict the most likely supramol. synthons in a crystalline solid is a valuable starting point for subsequently predicting the full crystal structure of a mol. with multiple competing mol. recognition sites. Energy and informatics-based prediction models based on mol. electrostatic potentials (MEPs), hydrogen-bond energies (HBE), hydrogen-bond propensity (HBP), and hydrogen-bond coordination (HBC) were applied to the crystal structures of twelve pyrazole-based mols. HBE, the most successful method, correctly predicted 100% of the exptl. observed primary intermol.-interactions, followed by HBP (87.5%), and HBC = MEPs (62.5%). A further HBC anal. suggested a risk of synthon crossover and synthon polymorphism in mols. with multiple binding sites. These easy-to-use models (based on just 2-D chem. structure) can offer a valuable risk assessment of potential formulation challenges.

Chemistry (Basel, Switzerland) published new progress about 3553-12-6. 3553-12-6 belongs to pyrazoles-derivatives, auxiliary class Pyrazole,Amine,Amide, name is 3-Acetamidopyrazole, and the molecular formula is C5H7N3O, Quality Control of 3553-12-6.

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

Zhou, Zhen published the artcile4-Benzoyl-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one/PdCl₂-catalyzed Suzuki coupling reactions under mild aerobic conditions, Quality Control of 4551-69-3, the publication is Huaxue Tongbao (2016), 79(3), 243-247, database is CAplus.

A simple com. ligand 4-benzoyl-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one had been applied to the palladium-catalyzed Suzuki-Miyaura cross-coupling in this paper. The effect of reaction condition, such as temperature, time, solvents and bases on the yield of product had been evaluated. Under the optimized conditions, a variety of aryl bromides and phenylboronic acid were successfully cross-coupled in high yield at a low catalytic loading of 0.1 (mol)%. Furthermore, the less reactive reactants such as aryl chlorides was explored to enlarge the scope of this cross-coupling, and it was found that the catalytic system employing the ligand in DMF/H₂O provided a general and convenient method to prepare biaryls from activated aryl chlorides. Besides, the optimal experiments revealed that the improvement of reaction time/temperature as well as the polarity of the proton solvent turned out to be the effective method for the coupling reaction.

Huaxue Tongbao 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 C18H28BNO2, Quality Control of 4551-69-3.

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