European journal of medicinal chemistry · 2020
Monoterpenoid-based inhibitors of filoviruses targeting the glycoprotein-mediated entry process.
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Sokolova Anastasiya S, Yarovaya Olga I, Zybkina Anastasiya V, Mordvinova Ekaterina D, Shcherbakova Nadezhda S, Zaykovskaya Anna V, Baev Dmitriy S, Tolstikova Tatyana G, Shcherbakov Dmitriy N, Pyankov Oleg V, Maksyutov Rinat A, Salakhutdinov Nariman F
Аннотация
In this study, we screened a large library of (+)-camphor and (-)-borneol derivatives to assess their filovirus entry inhibition activities using pseudotype systems. Structure-activity relationship studies revealed several compounds exhibiting submicromolar IC50 values. These compounds were evaluated for their effect against natural Ebola virus (EBOV) and Marburg virus. Compound 3b (As-358) exhibited the good antiviral potency (IC50 = 3.7 μM, SI = 118) against Marburg virus, while the hydrochloride salt of this compound 3b·HCl had a strong inhibitory effect against Ebola virus (IC50 = 9.1 μM, SI = 31) and good in vivo safety (LD50 > 1000 mg/kg). The results of molecular docking and in vitro mutagenesis analyses suggest that the synthesized compounds bind to the active binding site of EBOV glycoprotein similar to the known inhibitor toremifene.