Thiazolides as Novel Antiviral Agents: I. Inhibition of Hepatitis B Virus Replication
We report the syntheses and activities of a wide range of thiazolides [viz. 2-hydroxyaroyl- N -(thiazol-2-yl)amides] against hepatitis B virus replication, with QSAR analysis of our results. The prototypical thiazolide, nitazoxanide [2-hydroxybenzoyl- N -(5-nitrothiazol-2-yl)amide; NTZ] 1 is a broad...
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Published in | Journal of medicinal chemistry Vol. 54; no. 12; pp. 4119 - 4132 |
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Main Authors | , , , , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
23.05.2011
|
Online Access | Get full text |
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Summary: | We report the syntheses and activities of a wide range of thiazolides [viz. 2-hydroxyaroyl-
N
-(thiazol-2-yl)amides] against hepatitis B virus replication, with QSAR analysis of our results. The prototypical thiazolide, nitazoxanide [2-hydroxybenzoyl-
N
-(5-nitrothiazol-2-yl)amide; NTZ]
1
is a
broad spectrum
antiinfective agent, effective against anaerobic bacteria, viruses and parasites. By contrast, 2-hydroxybenzoyl-
N
-(5-chlorothiazol-2-yl)amide
3
is a novel, potent and selective inhibitor of hepatitis B replication (EC
50
= 0.33 μm) but is inactive against anaerobes. Several 4′- and 5′-substituted thiazolides show good activity against HBV; by contrast, some related salicyloylanilides show a narrower spectrum of activity. The ADME properties of
3
are similar to
1
, viz. the
O
-acetate is an effective prodrug and the
O
-aryl glucuronide is a major metabolite. The QSAR study shows a good correlation of observed EC
90
s for intracellular virions with thiazolide structural parameters. Finally we discuss the mechanism of action of thiazolides in relation to the present results. |
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Bibliography: | Current address: Health Biotechnology Division, National Institute for Biotechnology & Genetic Engineering (NIBGE), Faisalabad, Pakistan. |
ISSN: | 0022-2623 1520-4804 |
DOI: | 10.1021/jm200153p |