Small-molecule inhibitor: melagatran

Summary

Name

Common name
melagatran
Other names
exanta; H376/95; ximelagatran (prodrug of melagatran)

Inhibition

History
Melagatran was described as a new thrombin inhibitor in 1998 (Gustafsson et al., 1998; Nilsson et al., 1998).
Peptidases inhibited
Inhibits thrombin (Ki = 2 nM: Gustafsson et al., 1998).
Mechanism
Inhibition is reversible, and was characterised in detail by Nilsson et al. (1998).
Pharmaceutical relevance
Melagatran is one of the anti-coagulant agents that act as "direct" thrombin inhibitors (others being hirudin and argatroban). Anticoagulants that act less directly include warfarin, which interferes with the biosynthesis of the gamma-carboxyglutamate-containing coagulation factors, and heparin, which potentiates inhibition of thrombin by antithrombin.
DrugBank
DB04898

Chemistry

CID at PubChem
183797
ChEBI
102451
Structure
[melagatran (S01.217 inhibitor) structure ]
Chemical/biochemical name
2-[[(1R)-2-[(2S)-2-[(4-carbamimidoylphenyl)methylcarbamoyl]azetidin-1-yl]-1-cyclohexyl-2-oxo-ethyl]amino]acetic acid
Formula weight
429

General

Comment
After oral administration, ximelagatran is rapidly absorbed and converted to its active form, melagatran (Clement & Lopian, 2003).