CXCR4 antagonist 5

CXCR4 antagonist 5 (compound 23), a potent CXCR4 antagonist, exhibits high inhibition efficacy against CXCR4 with an IC50 value of 8.8 nM. It effectively suppresses CXCL12-induced cytosolic calcium increase (IC50 = 0.02 nM) and hinders CXCR4/CXCL12-mediated chemotaxis. Moreover, Compound 23 demonstrates favorable physicochemical properties and in vitro safety profiles, exhibiting only marginal to moderate inhibition of CYP isozymes and hERG [1].