Chemical and Pharmaceutical Bulletin
Online ISSN : 1347-5223
Print ISSN : 0009-2363
ISSN-L : 0009-2363
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Structure–Activity Relationships of New 2-Acylamino-3-thiophenecarboxylic Acid Dimers as Plasminogen Activator Inhibitor-1 Inhibitors
Nagahisa YamaokaYasuhiko KawanoYuko IzuharaToshio MiyataKanji Meguro
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2010 Volume 58 Issue 5 Pages 615-619

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Abstract

Small molecule inhibitors of plasminogen activator inhibitor (PAI)-1 have been reported to date but their clinical effects still remain unknown. The present study was undertaken to investigate the structure–activity relationships (SAR) of newly synthesized 2-acylamino-3-thiophenecarboxylic acid dimers based upon a core structure of TM5001 (1) and TM5007 (2) that we have previously identified as orally effective PAI-1 inhibitors. In general, compounds possessing bulky or/and hydrophobic substituents (e.g. phenyl, isobutyl group) on the both thiophene rings showed potent PAI-1 inhibitory activities irrespective of the positions of the substitution. The mono-carboxyl derivative (10) exhibited PAI-1 inhibition comparable to the corresponding dicarboxyl compound (9f).

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© 2010 The Pharmaceutical Society of Japan
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