TLR7 agonist 2

• CAT Number: I012957
• CAS Number: 1642857-69-9
• Molecular Formula: C17H16N6O2
• Molecular Weight: 336.35
• Purity: ≥95%
• Synonyms: 4-[(5-methyl-1,2-oxazol-3-yl)methoxy]-5-(pyridin-2-ylmethyl)pyrrolo[3,2-d]pyrimidin-2-amine
• InChI: InChI=1S/C17H16N6O2/c1-11-8-13(22-25-11)10-24-16-15-14(20-17(18)21-16)5-7-23(15)9-12-4-2-3-6-19-12/h2-8H,9-10H2,1H3,(H2,18,20,21)
• InChIKey: FVKOYFLAKSGBBV-UHFFFAOYSA-N
• SMILES: CC1=CC(=NO1)COC2=NC(=NC3=C2N(C=C3)CC4=CC=CC=N4)N

TLR7 agonist 2 is a potent and selective Toll-like Receptor 7 (TLR7) agonist with a LEC of 0.4 μM.
TLR7 agonist 2 is a potent and selective Toll-like Receptor 7 (TLR7) agonist with a lowest effective concentration (LEC) of 0.4 μM in HEK293 cell. TLR7 agonist 2 is found to be selective for TLR7 over TLR8 with LEC of >100 μM for human TLR8. TLR7 agonist 2 demonstrates low inhibition across five CYP450 isozymes (IC50 >10 μM) and is also not a time dependent inhibitor of CYP450 3A4. TLR7 agonist 2 has limited inhibition of the hERG potassium ion channel 3H-dofetilide binding in vitro (IC50 >50 μM)[1].
TLR7 agonist 2 is found to be rapidly cleared in conjunction with our target profile. Both Cmax and AUC increase less than dose proportionally between 0.3 and 3 mg/kg and more than dose-proportionally between 3 and 10 mg/kg. TLR7 agonist 2 can induce an antiviral interferon stimulated gene (ISG) response without inducing an IFNα response at a low dose. TLR7 agonist 2 also induces a 2.7 log decrease in serum HBV viral load from 0.3 mg/kg, and a maximum 3.1 log decrease is observed for doses between 1 and 5 mg/kg[1].

Reference

[1]. McGowan DC, et al. Identification and Optimization of Pyrrolo[3,2-d]pyrimidine Toll-like Receptor 7 (TLR7) Selective Agonists for the Treatment of Hepatitis B. J Med Chem. 2017 Jul 27;60(14):6137-6151.
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