Abstract: The invention relates to serine protease inhibitor compounds of fornula (I) where R1 is hydrogen, halo, cyano, nitro or hydroxyl, amino, alkoxy, alkyl amminoalkyl, hydroxyalkyl, thiol, alkylthio, aminosulphonyl alkoxyalkyl, alkoxycarbonyl, acyloxymethoxycabonyl or alkylamino optionally substituted by hydroxy, alkylamino, alkoxy, oxo, aryl, cycloalkyl, amino, halo, cyano, nitro, thiol, alkylthio, alkylsulphonyl, alkylsulphenyl, alkylsulphonamido, alkylaminosulphonyl, haloalkoxy and haloalkyl; R2 is hydrogen, halo, methyl amino, hydroxy, or oxo; and R is X—X—Y(R7)—L—Lp(D)n; wheren each X independently is a C, N, O or S atom or a CO, CR1, C(R1)2 or NR1 group, at least one X being C, CO, CR1 or a C(R1)2 group; Y (the &agr;-atom) is a nitrogen atom or a CR1 group or Y and L taken together form a cyclic group; R7 is a lipophilic group selected from alkyl, alkenyl, mono- or bi-cycloalkyl, aryl, heteroaryl, mono- or bicycloalkylalkyl, mono- or bicycloalkylakenyl, aralkyl, heter