Structure-Activity Relationships, Pharmacokinetics, and in Vivo Activity of CYP11B2 and CYP11B1 Inhibitors.

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Papillon JP, Adams CM, Hu QY, Lou C, Singh AK, Zhang C, Carvalho J, Rajan S, Amaral A, Beil ME, Fu F, Gangl E, Hu CW, Jeng AY, LaSala D, Liang G, Logman M, Maniara WM, Rigel DF, Smith SA, Ksander GM

Structure-Activity Relationships, Pharmacokinetics, and in Vivo Activity of CYP11B2 and CYP11B1 Inhibitors.

J Med Chem. 2015 Jun 11;58(11):4749-70. doi: 10.1021/acs.jmedchem.5b00407. Epub 2015 May 21.

PubMed ID
25953419 [ View in PubMed
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Abstract

CYP11B2, the aldosterone synthase, and CYP11B1, the cortisol synthase, are two highly homologous enzymes implicated in a range of cardiovascular and metabolic diseases. We have previously reported the discovery of LCI699, a dual CYP11B2 and CYP11B1 inhibitor that has provided clinical validation for the lowering of plasma aldosterone as a viable approach to modulate blood pressure in humans, as well normalization of urinary cortisol in Cushing's disease patients. We now report novel series of aldosterone synthase inhibitors with single-digit nanomolar cellular potency and excellent physicochemical properties. Structure-activity relationships and optimization of their oral bioavailability are presented. An illustration of the impact of the age of preclinical models on pharmacokinetic properties is also highlighted. Similar biochemical potency was generally observed against CYP11B2 and CYP11B1, although emerging structure-selectivity relationships were noted leading to more CYP11B1-selective analogs.

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