AZ10397767 is a potent CXCR2 antagonist (IC50 = 1 nM). AZ10397767 significantly reduced the numbers of infiltrating neutrophils into both in vitro and in vivo tumor models.
(R,R)-CXCR2-IN-2, diastereoisomer of CXCR2-IN-2 (compound 68), is a brain penetrant CXCR2 antagonist with a pIC50 of 9 and 6.8 in the Tango assay and d in the HWB Gro-α induced CD11b expression assay, respectively[1].
[1]. Lu H, et al. Discovery of Novel 1-Cyclopentenyl-3-phenylureas as Selective, Brain Penetrant, and Orally Bioavailable CXCR2 Antagonists. J Med Chem. 2018;61(6):2518-2532.
CXCR2 antagonist 3 (compound 11h) is a highly effective antagonist of CXC chemokine receptor 2 (CXCR2). It displays potent activity in inhibiting neutrophil infiltration into the air pouch, with double-digit nanomolar potencies against CXCR2. Moreover, CXCR2 antagonist 3 reduces the infiltration of neutrophils and MDSCs, while enhancing the infiltration of CD3+ T lymphocytes into Pan02 tumor tissues [1].