Optimizing Ligand Efficiency of Selective Androgen Receptor Modulators (SARMs)

ACS Med Chem Lett. 2015 Nov 19;7(1):83-8. doi: 10.1021/acsmedchemlett.5b00377. eCollection 2016 Jan 14.


A series of selective androgen receptor modulators (SARMs) containing the 1-(trifluoromethyl)benzyl alcohol core have been optimized for androgen receptor (AR) potency and drug-like properties. We have taken advantage of the lipophilic ligand efficiency (LLE) parameter as a guide to interpret the effect of structural changes on AR activity. Over the course of optimization efforts the LLE increased over 3 log units leading to a SARM 43 with nanomolar potency, good aqueous kinetic solubility (>700 μM), and high oral bioavailability in rats (83%).

Keywords: LLE; SARM; androgen receptor; ligand efficiency; selective androgen receptor modulator.