Novel 1-[2-(diarylmethoxy)ethyl]-2-methyl-5-nitroimidazoles as HIV-1 non-nucleoside reverse transcriptase inhibitors. A structure-activity relationship investigation.

Abstract:

:1-[2-(Diarylmethoxy)ethyl]-2-methyl-5-nitroimidazoles (DAMNIs) is a novel family of HIV-1 non-nucleoside reverse transcriptase inhibitors (NNRTIs) active at submicromolar concentration. Replacement of one phenyl ring of 1-[2-(diphenylmethoxy)ethyl]-2-methyl-5-nitroimidazole (4) with heterocyclic rings, such as 2-thienyl or 3-pyridinyl, led to novel DAMNIs with increased activity. In HIV-1 WT cell-based assay the racemic 1-{2-[alpha-(thiophen-2-yl)phenylmethoxy]ethyl}-2-methyl-5-nitroimidazole (7) (EC(50) = 0.03 microM) proved 5 times more active than compound 4. Docking experiments showed that the introduction of a chiral center would not affect the binding of both (R)-7 and (S)-7. The internal scoring function of the Autodock program calculated the same inhibition constant (K(i) = 7.9 nM) for the two enantiomers. Compounds 7 (ID(50) = 8.25 microM) were found more active than efavirenz (ID(50) = 25 microM) against the viral RT carrying the K103N mutation, suggesting for these compounds a potential use in efavirenz based anti-AIDS regimens.

journal_name

J Med Chem

authors

De Martino G,La Regina G,Di Pasquali A,Ragno R,Bergamini A,Ciaprini C,Sinistro A,Maga G,Crespan E,Artico M,Silvestri R

doi

10.1021/jm050273a

keywords:

subject

Has Abstract

pub_date

2005-06-30 00:00:00

pages

4378-88

issue

13

eissn

0022-2623

issn

1520-4804

journal_volume

48

pub_type

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