Thrombin inhibition by novel benzamidine derivatives: a free-energy perturbation study.

Abstract:

:Thrombin is a serine protease responsible for blood coagulation. Since thrombin inhibitors appear to be effective in the treatment and prevention of thrombotic and embolic disorders, considerable attention has been focused on the structure and interactions of this enzyme. In this work, to evaluate the relative free energies of hydration and binding to thrombin for some benzamidine derivatives, we used the finite difference thermodynamic integration (FDTI) algorithm within the Discover program of MSI. By this method, two possible orders of hydration for the candidates were obtained: p-amidinophenylpyruvate > p-(2-oxo-1-propyl)benzamidine > p-methylbenzamidine > p-ethylbenzamidine > p-(1-propyl)benzamidine > benzamidine and p-amidinophenylpyruvate > p-(2-oxo-1-propyl)benzamidine > p-methylbenzamidine > p-ethylbenzamidine > benzamidine > p-(1-propyl)benzamidine. We also obtained the following order for thrombin binding: p-(2-oxo-1-propyl)benzamidine > p-ethylbenzamidine > p-(1-propyl)benzamidine > p-methylbenzamidine > benzamidine > p-amidinophenylpyruvate.

journal_name

J Med Chem

authors

Guimarães CR,Bicca de Alencastro R

doi

10.1021/jm020123p

keywords:

subject

Has Abstract

pub_date

2002-11-07 00:00:00

pages

4995-5004

issue

23

eissn

0022-2623

issn

1520-4804

pii

jm020123p

journal_volume

45

pub_type

杂志文章