Neuroactive Steroids. 1. Positive Allosteric Modulators of the (γ-Aminobutyric Acid)A Receptor: Structure-Activity
Gabriel Martinez Botella1, Francesco G Salituro1, Boyd L Harrison1
1†SAGE Therapeutics, 215 First Street, Cambridge, Massachusetts 02142, United States.
Abstract:
Neuroactive steroids (NASs) have been shown to impact central nervous system (CNS) function through positive allosteric modulation of the GABA(A) receptor (GABA(A)-R). Herein we report the effects on the activity and pharmacokinetic properties of a series of nor-19 pregnanolone analogues bearing a heterocyclic substituent at C-21. These efforts resulted in the identification of SGE-516, a balanced synaptic/extrasynaptic GABA(A) receptor modulator, and SGE-872, a selective extrasynaptic GABA(A) receptor modulator. Both molecules possess excellent druglike properties, making them advanced leads for oral delivery of GABA(A) receptor modulators.
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