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Research Article

Rho-kinase Inhibitors: Pharmacomodulations on the Lead Compound Y-32885

, , , , , & show all
Pages 381-390 | Published online: 30 Sep 2008
 

Abstract

In order to specify structure-activity relationships we have synthesized new series of analogues of the Rho-kinase inhibitor (R)−(+)− N −(4-pyridyl)-4-(1-aminoethyl)benzamide (Y-32885). The structural modifications concerned the 1-aminoethyl, the pyridyl and the amide groups which are the main features of this lead compound. Our analogue derivatives were evaluated on GTP γS-induced contraction in permeabilized smooth-muscle and on the actin cytoskeleton. All the modifications result in a diminution or a loss of activity showing that interactions of Y-32885 with the catalytic domain of Rho-kinase seem to be particularly definite and sensitive to structural variations. The presence of a pyridine moiety and a basic amine group separated by a spacer bearing an amide function are of utmost importance.

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