A novel series of trans-2-aryloxy-1,2,3,4,-tetrahydronaphthyl azoles and related cyclohexyl azoles were synthesized and evaluated in vitro against Leishmania donovani. Compound 9 identified as most active analog with IC(50) value of 0.64 μg/mL and SI value of 34.78 against amastigotes, and is several folds more potent than the reference drugs sodium stilbogluconate and paromomycin. It also exhibited significant in vivo inhibition of 83.33%, and provided a new structural scaffold for antileishmanials.
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