SAR-20347

• CAT Number: I013080
• CAS Number: 1450881-55-6
• Molecular Formula: C21H18ClFN4O4
• Molecular Weight: 444.84
• Purity: ≥95%
• Synonyms: 2-(2-chloro-6-fluorophenyl)-5-[4-(morpholine-4-carbonyl)anilino]-1,3-oxazole-4-carboxamide
• InChI: InChI=1S/C21H18ClFN4O4/c22-14-2-1-3-15(23)16(14)19-26-17(18(24)28)20(31-19)25-13-6-4-12(5-7-13)21(29)27-8-10-30-11-9-27/h1-7,25H,8-11H2,(H2,24,28)
• InChIKey: HEDPDFHTQKEORT-UHFFFAOYSA-N
• SMILES: C1COCCN1C(=O)C2=CC=C(C=C2)NC3=C(N=C(O3)C4=C(C=CC=C4Cl)F)C(=O)N

SAR-20347 is an inhibitor of TYK2, JAK1, JAK2 and JAK3 with IC50s of 0.6, 23, 26 and 41 nM, respectively.
When NK-92 cells are stimulated with IL-12, SAR-20347 potently inhibits IL-12-mediated STAT4 phosphorylation, a TYK2-dependent event, with an IC50 of 126 nM. SAR-20347 demonstrates a selectivity of TYK2>JAK1>JAK2>JAK3. Cells without IL-12 in the culture media have no measureable IFN-γ, while cells incubated with IL-12 and SAR-20347 demonstrate dose-dependent inhibition of IFN-γ production. SAR-20347 dose-dependently inhibits the production of secreted embryonic alkaline phosphatase (SEAP) with greatest inhibition occurring with 5 μM of SAR-20347 in these experiments[1].
60 mg/kg SAR-20347 inhibits the production of IFN-γ in the serum by 91% compare to vehicle-treated animals, demonstrating that SAR-20347 can inhibit TYK2 signaling in vivo. SAR-20347 treatment significantly reduces IL-17 production as measured by average signal intensity, consistent with the gene expression analysis[1].

Reference

[1]. Works MG, et al. Inhibition of TYK2 and JAK1 ameliorates imiquimod-induced psoriasis-like dermatitis by inhibiting IL-22 and the IL-23/IL-17 axis. J Immunol. 2014 Oct 1;193(7):3278-87.
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