pyrazoles-derivatives

Ran, Kai; Zeng, Jun; Wan, Guoquan; He, Xiaojie; Feng, Zhanzhan; Xiang, Wang; Wei, Wei; Hu, Xiang; Wang, Ningyu; Liu, Zhihao; Yu, Luoting published the artcile< Design, synthesis and biological evaluations of a series of Pyrido[1,2-a]pyrimidinone derivatives as novel selective FGFR inhibitors>, Application of C11H19BN2O2, the main research area is pyridopyrimidinone preparation antitumor activity FGFR inhibitor; FGFR; Solubility; Tumor growth inhibition; pyrido[1,2-a]pyrimidinone.

Herein, the design and synthesis of pyrido[1,2-a]pyrimidinone derivatives I (R1 = methoxyethoxy, tert-butoxycarbonyl-1,2,3,6-tetrahydropyridin-4-yl, 1H-pyrazol-4-yl, etc.) and II (R2 = Me, azetidin-3-yl, etc.; R3 = 3-[(propan-2-yl)amino]propyl, prop-2-yn-1-yl, cyclopropylmethyl, etc.) as potent FGFR inhibitors were described. Examination of structure-activity relationships and preliminary assessment identified I (R1 = 1-methyl-1H-pyrazol-4-yl) as a novel FGFR inhibitor that displayed excellent potency in vitro. Candidate I [R1 = 1-methyl-1H-pyrazol-4-yl (III)] suppressed the phosphorylation of FGFR signaling pathways and induced cell cycle arrest and apoptosis at low nanomolar concentration In the kinase inhibition profile, III showed excellent kinase selectivity for the FGFR family. Furthermore, III showed higher aqueous solubility than Erdafitinib. Moreover, III exhibited potent antitumor activity (tumor growth inhibition = 106.4%) in FGFR2-amplified SNU-16 gastric cancer xenograft model using a daily oral dose of 30 mg/kg. These results suggest that III is a promising candidate for further drug development.

European Journal of Medicinal Chemistry published new progress about Amines Role: RCT (Reactant), RACT (Reactant or Reagent). 1046832-21-6 belongs to class pyrazoles-derivatives, and the molecular formula is C11H19BN2O2, Application of C11H19BN2O2.

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

Teuscher, Kevin B.; Meyers, Kenneth M.; Wei, Qiangqiang; Mills, Jonathan J.; Tian, Jianhua; Alvarado, Joseph; Sai, Jiqing; Van Meveren, Mayme; South, Taylor M.; Rietz, Tyson A.; Zhao, Bin; Moore, William J.; Stott, Gordon M.; Tansey, William P.; Lee, Taekyu; Fesik, Stephen W. published the artcile< Discovery of Potent Orally Bioavailable WD Repeat Domain 5 (WDR5) Inhibitors Using a Pharmacophore-Based Optimization>, Name: 1,3-Dimethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole, the main research area is cancers WDR5 WIN site inhibitor selectivity pharmacokinetic antiproliferative bioavailability.

WD repeat domain 5 (WDR5) is a nuclear scaffolding protein that forms many biol. important multiprotein complexes. The WIN site of WDR5 represents a promising pharmacol. target in a variety of human cancers. Here, we describe the optimization of our initial WDR5 WIN-site inhibitor using a structure-guided pharmacophore-based convergent strategy to improve its druglike properties and pharmacokinetic profile. The core of the previous lead remained constant while a focused SAR effort on the three pharmacophore units was combined to generate a new in vivo lead series. Importantly, this new series of compounds has picomolar binding affinity, improved cellular antiproliferative activity and selectivity, and increased kinetic aqueous solubility They also exhibit a desirable oral pharmacokinetic profile with manageable i.v. clearance and high oral bioavailability. Thus, these new leads including compound 41 (I), are useful probes toward studying the effects of WDR5 inhibition.

Journal of Medicinal Chemistry published new progress about Acute myeloid leukemia. 1046832-21-6 belongs to class pyrazoles-derivatives, and the molecular formula is C11H19BN2O2, Name: 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

Tu, Xing-Jun; Hao, Wen-Juan; Ye, Qin; Wang, Shuang-Shuang; Jiang, Bo; Li, Guigen; Tu, Shu-Jiang published the artcile< Four-Component Bicyclization Approaches to Skeletally Diverse Pyrazolo[3,4-b]pyridine Derivatives>, Synthetic Route of 118430-74-3, the main research area is pyrazolopyridine preparation; arylglyoxal aminopyrazole arylamine hydroxymethylpyranone cyclohexanedione four component cyclization.

A novel four-component bicyclization strategy has been established, allowing a flexible and practical approach to 37 examples of multicyclic pyrazolo[3,4-b]pyridines from low-cost and readily accessible arylglyoxals, pyrazol-5-amines, aromatic amines, 4-hydroxy-6-methyl-2H-pyran-2-one, and cyclohexane-1,3-diones. The polysubstituted cyclopenta[d]pyrazolo[3,4-b]pyridines were stereoselectively synthesized through a microwave-assisted special [3+2+1]/[3+2] bicyclization with good control of the spatial configuration of exocyclic double bonds. The novel [3+2+1]/[2+2+1] bicyclization resulted in 17 examples of unreported pyrazolo[3,4-b]pyrrolo[4,3,2-de]quinolones. Reasonable mechanisms for forming two new types of multicyclic pyrazolo[3,4-b]pyridines are also proposed.

Journal of Organic Chemistry published new progress about Acetals Role: RCT (Reactant), RACT (Reactant or Reagent) (arylglyoxals). 118430-74-3 belongs to class pyrazoles-derivatives, and the molecular formula is C7H11N3, Synthetic Route of 118430-74-3.

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

Jeon, Dong Ju; Lee, Jung No; Kim, Hyoung Rae; Ryu, Eung K. published the artcile< The synthesis of a new pyrazolylimidazolinone via 1,3-dipolar cycloaddition reaction of N-methyl sydnone with methyl propiolate>, Product Details of C6H8N2O2, the main research area is pyrazolylimidazolinone preparation dipolar cycloaddition methylsydnone.

The preparation of 1-methyl-3-[4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-1H-pyrazole-4-carboxylic acid starting from N-methylsydnone and Me propiolate via a 1,3-dipolar cycloaddition reaction was reported.

Bulletin of the Korean Chemical Society published new progress about 1,3-Dipolar cycloaddition reaction. 17827-61-1 belongs to class pyrazoles-derivatives, and the molecular formula is C6H8N2O2, Product Details of C6H8N2O2.

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

Wang, Le; Doherty, George A.; Judd, Andrew S.; Tao, Zhi-Fu; Hansen, T. Matthew; Frey, Robin R.; Song, Xiaohong; Bruncko, Milan; Kunzer, Aaron R.; Wang, Xilu; Wendt, Michael D.; Flygare, John A.; Catron, Nathaniel D.; Judge, Russell A.; Park, Chang H.; Shekhar, Shashank; Phillips, Darren C.; Nimmer, Paul; Smith, Morey L.; Tahir, Stephen K.; Xiao, Yu; Xue, John; Zhang, Haichao; Le, Phuong N.; Mitten, Michael J.; Boghaert, Erwin R.; Gao, Wenqing; Kovar, Peter; Choo, Edna F.; Diaz, Dolores; Fairbrother, Wayne J.; Elmore, Steven W.; Sampath, Deepak; Leverson, Joel D.; Souers, Andrew James published the artcile< Discovery of A-1331852, a First-in-Class, Potent, and Orally-Bioavailable BCL-XL Inhibitor>, HPLC of Formula: 936250-20-3, the main research area is tumor BCLXL BCL2 apoptosis A1155463 structure based drug design.

Herein we describe the discovery of A-1331852(I), a first-in-class orally active BCL-XL inhibitor that selectively and potently induces apoptosis in BCL-XL dependent tumor cells. This mol. was generated by re-engineering our previously reported BCL-XL inhibitor A-1155463 using structure-based drug design. Key design elements included rigidification of the A-1155463 pharmacophore and introduction of sp3-rich moieties capable of generating highly productive interactions within the key P4 pocket of BCL-XL. A-1331852 has since been used as a critical tool mol. for further exploring BCL-2 family protein biol., while also representing an attractive entry into a drug discovery program.

ACS Medicinal Chemistry Letters published new progress about Antitumor agents. 936250-20-3 belongs to class pyrazoles-derivatives, and the molecular formula is C10H17BN2O2, HPLC of Formula: 936250-20-3.

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

Liu, Wei; Deng, Wei; Sun, Saisai; Yu, Chunyan; Su, Xubo; Wu, Aliang; Yuan, Youlang; Ma, Zhonglin; Li, Ke; Yang, Hongfang; Peng, Xuanjia; Dietrich, Justin published the artcile< A Strategy for the Synthesis of Sulfonamides on DNA>, HPLC of Formula: 13788-92-6, the main research area is sulfonamide DNA preparation sulfinic acid sulfinate amine ligation.

An efficient method is reported to synthesize sulfonamides on DNA from sulfinic acids or sodium sulfinates and amines in the presence of iodine under mild conditions. This method demonstrates a major expansion of scope of sulfonamide formation on DNA through the utilization of a novel sodium carbonate-sodium sulfinate bifunctional reagent class.

Organic Letters published new progress about Amines Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation) (DNA-conjugated). 13788-92-6 belongs to class pyrazoles-derivatives, and the molecular formula is C9H7BrN2, HPLC of Formula: 13788-92-6.

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

Sidhom, Ameni; Soule, Jean-Francois; Doucet, Henri; Allouche, Fatma published the artcile< Reactivity of 5-aminopyrazoles bearing a cyclopropyl group at C3-position in palladium-catalyzed direct C4-arylation>, Reference of 118430-74-3, the main research area is cyclopropyl methyl pyrazolamine bromobenzene palladium catalyst chemoselective regioselective arylation; phenyl cyclopropyl methyl pyrazolamine green preparation.

Pyrazole derivatives bearing a cyclopropyl group at C3-position and an amino substituent at C5 were successfully employed in palladium-catalyzed direct arylations. These couplings were performed using air-stable PdCl(C3H5)(dppb) catalyst associated to KOAc as inexpensive base and afforded regioselectively the C4-arylated pyrazoles without decomposition of the cyclopropyl unit and formation of amination products. A wide variety of functional groups on the aryl bromide including electron-withdrawing and electron-donating ones such as nitrile, nitro, propionyl, ester, trifluoromethyl, chloro, fluoro or methoxy was tolerated. Moreover, from 5-aminopyrazoles bearing N-2′-bromoaryl or 2′-bromobenzenesulfonamide substituent on the amino group, intramol. Pd-catalyzed direct arylations allowed the formation of tricyclic compounds by formation of 5- or 6-membered rings.

Catalysis Communications published new progress about Aryl bromides Role: RCT (Reactant), RACT (Reactant or Reagent). 118430-74-3 belongs to class pyrazoles-derivatives, and the molecular formula is C7H11N3, Reference of 118430-74-3.

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

Fayos, Jose; Infantes, Lourdes; Cano, F. H. published the artcile< Neural Network Prediction of Secondary Structure in Crystals: Hydrogen-Bond Systems in Pyrazole Derivatives>, Synthetic Route of 13808-65-6, the main research area is neural network prediction secondary structure crystal hydrogen bond pyrazole.

With the purpose of predicting by neural networks some structural properties of crystals, in particular, the types of secondary structure built by H bonds, 46 mols., containing the pyrazole ring, were codified in vectors of equal dimension. Looking for an unbiased codification, the authors selected the components of these vectors from the 1-dimensional Fourier transform of the corresponding three-dimensional mol. charge distribution. Matrixes of similarity and similarity maps of Kohonen’s trained networks have allowed classification of the mols., as a previous step before prediction of their H-bond system. Thus, the authors have worked under the hypothesis that this mol. codification contains information relevant to the structural level in crystals. The classes obtained show correlation with the previously known secondary structure of the corresponding crystals. Then, the authors have achieved, by training a neural network with some mol. vectors supervised by their coded secondary structure, a significant prediction of the type of secondary structure for the rest of the mols. This mol. codification seems also to account for other noncovalent mol. interactions involved in the packing.

Crystal Growth & Design published new progress about Hydrogen bond. 13808-65-6 belongs to class pyrazoles-derivatives, and the molecular formula is C9H7BrN2, Synthetic Route of 13808-65-6.

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

Norman, Natalie J.; Bao, Si Tong; Curts, Lynne; Hui, Tiffani; Zheng, Shao-Liang; Shou, Tiffany; Zeghibe, Ana; Burdick, Izzy; Fuehrer, Hannah; Huang, Adrian published the artcile< Highly Selective N-Alkylation of Pyrazoles: Crystal Structure Evidence for Attractive Interactions>, Application of C9H7BrN2, the main research area is alkyl pyrazole preparation regioselective crystal structure; pyrazole electrophile Michael reaction.

Inspired by crystal structures, authors designed and achieved a catalyst-free Michael reaction for the preparation of an N1-alkyl pyrazoles I (R1 = 3-CF3, 3-COOEt, 3-NO2-4-Br, etc.; R2 = CN, COOEt) in a high yield (>90%) with excellent regioselectivity (N1/N2 > 99.9:1). The scope of this protocol has been extended to accomplish the first general regioselective N1-alkylation of 1H-pyrazoles to give di-, tri-, and tetra-substituted pyrazoles in a single step. The resulting pyrazoles bear versatile functional groups such as bromo, ester, nitro, and nitrile, offering opportunities for late-stage functionalization. This efficient methodol. will have an impact on drug discovery, as several Food and Drug Administration-approved drugs are pyrazole derivatives A working hypothesis for the regioselectivity is proposed. X-ray crystal structures of the products that highlight the attractive interactions are discussed. This report provides a rare source for the further elucidation of the attractive interactions because the isomeric ratios and the crystal structures are directly related.

Journal of Organic Chemistry published new progress about Bond angle. 13808-65-6 belongs to class pyrazoles-derivatives, and the molecular formula is C9H7BrN2, Application of C9H7BrN2.

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

Mills, L. Reginald; Graham, Joshua M.; Patel, Purvish; Rousseaux, Sophie A. L. published the artcile< Ni-Catalyzed Reductive Cyanation of Aryl Halides and Phenol Derivatives via Transnitrilation>, Related Products of 13788-92-6, the main research area is benzonitrile preparation; aryl halide phenol methyl phenyl malononitrile reductive cyanation; nickel catalyst.

Herein, Ni-catalyzed reductive coupling for the synthesis of benzonitriles from aryl(pseudo)halides and an electrophilic cyanating reagent, 2-methyl-2-Ph malononitrile (MPMN) is reported. MPMN is a bench-stable, carbon-bound electrophilic CN reagent that does not release cyanide under the reaction conditions. A variety of medicinally relevant benzonitriles can be made in good yields. Addition of NaBr to the reaction mixture allows for the use of more challenging aryl electrophiles such as aryl chlorides, tosylates, and triflates. Mechanistic investigations suggest that NaBr plays a role in facilitating oxidative addition with these substrates.

Journal of the American Chemical Society published new progress about Aromatic nitriles Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 13788-92-6 belongs to class pyrazoles-derivatives, and the molecular formula is C9H7BrN2, Related Products of 13788-92-6.

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