Be. Maryanoff et al., POTENTIAL ANXIOLYTIC AGENTS .2. IMPROVEMENT OF ORAL EFFICACY FOR THE PYRIDO[1,2-A]BENZIMIDAZOLE (PBI) CLASS OF GABA-A RECEPTOR MODULATORS, Bioorganic & medicinal chemistry letters, 6(3), 1996, pp. 333-338
We have further explored the structure-activity relationships of pyrid
o[1,2-a]benzimidazole (PBI) derivatives (viz. prototype 1), a novel se
ries of central GABA-A receptor modulators, with the intent of enhanci
ng oral efficacy. A study involving the introduction of acidic or basi
c groups led to the identification of RWJ-38293 (3a) as a potential an
xiolytic agent.