896467-54-2

Upstream product

• 360056-45-7 methyl 4-amino-1H-pyrazole-3-carboxylate 
• 385-00-2 2,6-difluorobenzoic acid 
• 67-56-1 methanol 
• 825618-95-9 4-(2,6-difluorobenzoylamino)-1H-pyrazole-3-carboxylic acid 
• 18063-02-0 2,6-difluorobenzoylchloride 
• 138786-86-4 methyl 4-nitro-1H-pyrazole-3-carboxylate 

Downstream Products

• 896467-55-3 2,6-difluoro-N-(3-hydrazinocarbonyl-1H-pyrazol-4-yl)-benzamide 
• 825618-95-9 4-(2,6-difluorobenzoylamino)-1H-pyrazole-3-carboxylic acid 

Relevant academic research and scientific papers

Discovery of novel cyclin-dependent kinase (CDK) and histone deacetylase (HDAC) dual inhibitors with potent in vitro and in vivo anticancer activity

In the current study, we reported a series of novel 1-H-pyrazole-3-carboxamide-based inhibitors targeting histone deacetylase (HDAC) and cyclin-dependent kinase (CDK). The representative compounds N-(4-((2-aminophenyl)carbamoyl)benzyl)-4-(2,6-dichlorobenzamido)-1H-pyrazole-3-carboxamide (7c) and N-(4-(2-((2-aminophenyl)amino)-2-oxoethyl)phenyl)-4-(2,6-dichlorobenzamido)-1H-pyrazole-3-carboxamide (14a) with potent antiproliferative activities towards five solid cancer cell lines, showed excellent inhibitory activities against HDAC2 (IC50 = 0.25 and 0.24 nM respectively) and CDK2 (IC50 = 0.30 and 0.56 nM respectively). In addition, compounds 7c and 14a significantly inhibited the migration of A375 and H460 cells. Further studies revealed that compounds 7c and 14a could arrest cell cycle in G2/M phase and promote apoptosis in A375, HCT116, H460 and Hela cells, which was associated with increasing the intracellular reactive oxygen species (ROS) levels. More importantly, compound 7c possessed favorable pharmacokinetic properties with the intraperitoneal bioavailability of 63.6% in ICR mice, and potent in vivo antitumor efficacy in the HCT116 xenograft model. Our study demonstrated that compound 7c provides a promising strategy for the treatment of malignant tumors.

PHARMACEUTICAL COMPOUNDS

The invention provides a cyclin dependent kinase (e.g. cdk-4 kinase) inhibitor of the formula (I) or a salt, tautomer, solvate or N-oxide thereof; wherein R1 is an optionally substituted monocyclic or bicyclic aryl or heteroaryl group containing 0-2 heteroatoms selected from O, N and S wherein the optional substituents are selected from halogen, C1-4 alkyl, C1-4 alkoxy, C3-4 cycloalkyl and cyano, and wherein the C1-4 alkyl and C1-4 alkoxy groups are each optionally further substituted by C1-2 alkoxy or one or more halogen atoms; and E is a group E1, E2, E3 or E4: formulae E1, E2, E3, E4 wherein n, q, A5 B, T, U, V, W, Z, R2, R5, R6 and R7 are as defined in the claims.

PYRAZOLE DERIVATIVES AS THAT MODULATE THE ACTIVITY OF CDK, GSK AND AURORA KINASES

The invention provides a compound of the formula (I): for use in medicine: or salts or tautomers or N-oxides or solvates thereof; wherein R1 is an optionally substituted heterocyclic group having from 3 to 12 ring members provided that the cyclic group joined to the pyrazole contains at least one heteroatom selected from N, O or S; A is a bond or -Y-(B)n-; B is C=O, NRg(C=O) or O(C=O) wherein Rg is hydrogen or C1-4 hydrocarbyl optionally substituted by hydroxy or C1-4 alkoxy; n is 0 or 1; Y is a bond or an alkylene chain of 1,2 or 3 carbon atoms in length; R2 is hydrogen; halogen; C1-4 alkoxy (e.g. methoxy); or a C1-4 hydrocarbyl group optionally substituted by halogen (e.g. fluorine), hydroxyl or C1-4 alkoxy (e.g. methoxy); R3 is selected from optionally substituted carbocyclic and heterocyclic groups having from 3 to 12 ring members or an optionally substituted C1-8 hydrocarbyl group; with the proviso that R1 is not formula (II): where X, R3’ and R4’ are defined in the claims.