Hit optimization studies of 3-hydroxy-indolin-2-one analogs as potential anti-HIV-1 agents

Add time:09/02/2019    Source:sciencedirect.com

In the current study, twenty-two compounds based upon 3-hydroxy-3-(2-oxo-2-phenylethyl)indolin-2-one nucleus were designed, synthesized and in vitro evaluated for HIV-1 RT inhibition and anti-HIV-1 activity. Compounds 3d, 5c and 5e demonstrated encouraging potency against RT enzyme as well as HIV-1 in low micromolar to nanomolar concentration with good to excellent safety index. Structure activity relationship studies revealed that halogens such as bromo or chloro at 5th the position of oxindole ring remarkably enhanced the potency against RT. Moreover, methoxy or chloro groups at the ortho position of phenyl ring also significantly favored RT inhibition activity. Seven compounds (3b, 3c, 3d, 3e, 5b, 5c and 5e) with better anti-HIV-1 potency were tested against the mutant HIV-1K103N strain. The putative binding mode, as well as interaction patterns of the best active compound 5c with wild HIV-1 RT were studied via docking studies.

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