Structure-activity relationship studies of 1-(4-chloro-2,5-dimethoxyphenyl) -3-(3-propoxypropyl)thiourea, a non-nucleoside reverse transcriptase inhibitor of human immunodeficiency virus type-1

Michal Weitman, Keti Lerman, Abraham Nudelman, Dan Thomas Major, Amnon Hizi, Alon Herschhorn

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

The reverse transcriptase (RT) of the human immunodeficiency virus type-1 (HIV-1) is still a prime target for drug development due to the continuing need to block drug-resistant RT mutants by new inhibitors. We have previously identified 1-(4-chloro-2,5-dimethoxyphenyl)-3-(3-propoxypropyl)thiourea, compound 1, as a potent RT inhibitor from an available chemical library. Here, we further modified this compound to study structure-activity relationships when replacing various groups in the molecule. Different functional groups were systematically introduced on the aromatic ring and the aliphatic chain of the compound was modified. The effect of these modifications on viral infectivity was then evaluated. The most potent compound found was propyl 4-(amino-N-(4-chloro-2,5-dimethoxyphenyl)methanethioamino)butanoate, 45c, which inhibited infectivity with a calculated IC 50 of about 1.1 μM. Docking studies identified potential important interactions between the top scoring ligands and HIV-1 RT, and the predicted relative affinity of the ligands was found to be in agreement with the experimental results.

Original languageEnglish (US)
Pages (from-to)447-467
Number of pages21
JournalEuropean Journal of Medicinal Chemistry
Volume46
Issue number2
DOIs
StatePublished - Feb 1 2011
Externally publishedYes

Keywords

  • HIV-1
  • Reverse transcriptase
  • Thioureas

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