A variety of analogues of 1-[4-methoxy-3, 5-dimethylbenzyll-4-[3-(ethylamino)-2-pyridyl] piperazine hydrochloride (U-80493E) were synthesized and evaluated for their inhibition of human immunodeficiencyvirus type 1 (HIV-1) reverse transcriptase (RT). Replacement of the substituted aryl moiety with various substituted indoles provided bis (heteroary1) piperazines (BHAPs) that were l&lOO-fold more potent than U-80493E. The pyridyl portion ...