Figure 2 |. ENPP1 inhibitors with a zinc-binding phosphonate head group exhibit high potency at physiological pH.
(A) Chemical structure of the R group (core = piperidine, tail = 6,7-dimethoxy quinazoline). (B) Chemical structures of zinc-binding heads with corresponding Ki values (mean of at least 2 independent replicates) at pH 7.4 and pH 9.0. Ki values were determined using 3 nM ENPP1 and 5 μM cGAMP.
