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| | N-[3-[4,5-Dihydro-4-methyl-6-[[4-(4-morpholinylcarbonyl)phenyl]amino]-5-oxo-2-pyrazinyl]-2-methylphenyl]-4-(tert-butyl)benzamide Basic information | | Description In vitro In vivo |
| | N-[3-[4,5-Dihydro-4-methyl-6-[[4-(4-morpholinylcarbonyl)phenyl]amino]-5-oxo-2-pyrazinyl]-2-methylphenyl]-4-(tert-butyl)benzamide Chemical Properties |
| density | 1.22 | | storage temp. | Store at -20°C | | solubility | ≥29 mg/mL in DMSO; insoluble in H2O; ≥6.72 mg/mL in EtOH with gentle warming and ultrasonic | | form | solid |
| | N-[3-[4,5-Dihydro-4-methyl-6-[[4-(4-morpholinylcarbonyl)phenyl]amino]-5-oxo-2-pyrazinyl]-2-methylphenyl]-4-(tert-butyl)benzamide Usage And Synthesis |
| Description | CGI1746 is a potent and highly selective small-molecule inhibitor of the Btk with IC50 of 1.9 nM. | | In vitro | CGI1746 is specific for Btk, with ～1,000-fold selectivity over Tec and Src family kinases. In an ATP-free competition binding assay, the dissociation constant for Btk is 1.5 nM. CGI1746 inhibits Btk activity in a new binding mode that stabilizes an inactive nonphosphorylated enzyme conformation. CGI1746 inhibits both auto-and transphosphorylation steps necessary for enzyme activation. CGI1746 completely inhibits anti-IgM–induced murine and human B cell proliferation, with IC50s of 134 nM and 42 nM, respectively, but had no effect on anti-CD3-and anti-CD28–induced T cell proliferation. CGI1746 potently inhibits the proliferation of CD27+IgG+ B cells isolated from the tonsils of four human donors with an average IC50 of 112 nM. In macrophages, CGI1746 abolishes FcγRIII-induced TNFα, IL-1β and IL-6 production. CGI1746 potently inhibits TNFα, IL-1β and, to a lesser extent, IL-6 (three-to eight-fold higher IC50) production in human monocytes stimulated with immobilized or soluble immune complexes. | | In vivo | CGI1746 abrogates B cell–dependent arthritis. CGI1746 treatment (100 mg/kg, s.c, twice-daily dosing) results in significant inhibition (97%) of overall clinical arthritis scores. CGI1746 treatment substantially reduces TNFα, IL-1β and IL-6, as well as MCP1 and MIP-1α on both the mRNA and protein level in the passive anti-collagen II antibody–induced arthritis (CAIA) model. CGI1746 shows comparable efficacy to TNFα blockade and significantly reduces clinical scores, as well as joint inflammation, in mice or rats with established arthritis. | | Description | CGI1746 is a potent, selective inhibitor of Bruton’s tyrosine kinase (BTK; IC50 = 1.9 nM), a non-receptor tyrosine kinase that is important in B lymphocyte development. It blocks both auto-and trans-phosphorylation of BTK by occupying an SH3 binding pocket in the un-phosphorylated enzyme. CGI1746 prevents B-cell antigen receptor-mediated B lymphocyte proliferation and suppresses FCγRIII-induced TNFα, IL-1β, and IL-6 production in macrophages. It reduces cytokine levels within joints and ameliorates symptoms in a mouse model of autoantibody-induced arthritis. | | Uses | CGI 1746 is a Bruton’s tyrosine kinase (Btk) inhibitor to be used in antitumor drugs. | | target | Btk | | storage | Store at -20°C |
| | N-[3-[4,5-Dihydro-4-methyl-6-[[4-(4-morpholinylcarbonyl)phenyl]amino]-5-oxo-2-pyrazinyl]-2-methylphenyl]-4-(tert-butyl)benzamide Preparation Products And Raw materials |
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