From Wikipedia, the free encyclopedia
Tiplaxtinin structure.png
Clinical data
Other namesTiplaxtinin; PAI-039
ATC code
  • None
  • (1-benzyl-5-(4-(trifluoromethoxy)phenyl)-1H-indol-3-yl)oxoacetic acid
CAS Number
PubChem CID
Chemical and physical data
Molar mass439.390 g·mol−1
3D model (JSmol)
  • c2ccccc2Cn(cc1C(=O)C(O)=O)c4c1cc(cc4)-c(cc3)ccc3OC(F)(F)F

Tiplasinin (INN, USAN) or tiplaxtinin (PAI-039) is a drug which acts as an inhibitor of the serpin protein plasminogen activator inhibitor-1 (PAI-1), thereby increasing activity of the enzymes tissue plasminogen activator and urokinase, which are involved in the blood clotting cascade. Inhibition of PAI-1 can help to prevent damage to blood vessel walls that occurs as a consequence of chronic high blood pressure, as well as preventing the formation of blood clots that can lead to stroke and heart attack, and potentially also providing a novel treatment mechanism to slow the development of diabetes and obesity. Tiplasinin was unsuccessful in human clinical trials due to an unfavourable risk to benefit ratio and the need for tight dose control to avoid provoking bleeding disorders, however it is still widely used in scientific research and newer drugs sharing the same mechanism of action are likely to be developed for medical use in future.[1][2][3]


  1. ^ Elokdah H, Abou-Gharbia M, Hennan JK, McFarlane G, Mugford CP, Krishnamurthy G, Crandall DL (July 2004). "Tiplaxtinin, a novel, orally efficacious inhibitor of plasminogen activator inhibitor-1: design, synthesis, and preclinical characterization". Journal of Medicinal Chemistry. 47 (14): 3491–4. CiteSeerX doi:10.1021/jm049766q. PMID 15214776.
  2. ^ Hennan JK, Elokdah H, Leal M, Ji A, Friedrichs GS, Morgan GA, et al. (August 2005). "Evaluation of PAI-039 [{1-benzyl-5-[4-(trifluoromethoxy)phenyl]-1H-indol-3-yl}(oxo)acetic acid], a novel plasminogen activator inhibitor-1 inhibitor, in a canine model of coronary artery thrombosis". The Journal of Pharmacology and Experimental Therapeutics. 314 (2): 710–6. doi:10.1124/jpet.105.084129. PMID 15860572. S2CID 5568897.
  3. ^ Brown NJ (October 2010). "Therapeutic potential of plasminogen activator inhibitor-1 inhibitors". Therapeutic Advances in Cardiovascular Disease. 4 (5): 315–24. doi:10.1177/1753944710379126. PMID 20660535. S2CID 9220969.