Patent ID: 8263621

Claim:
A compound of formula I or a stereoisomeric form of a compound of formula I, or a mixture of such forms in any ratio, or a physiologically tolerable salt of a compound of formula I where R1 is carbamimidoylphenyl, aminomethylphenyl or Het-Z, where Het is selected from the group consisting of benzimidazolyl and isoquinolinyl, and in which Z is amino or amidino, R2 and R4 are in each case a hydrogen atom, R3 is 1) phenyl, in which phenyl is unsubstituted or mono- or disubstituted by T, 2)-phenyl-Q-phenyl, in which the two phenyl radicals in each case independently of one another are unsubstituted or mono- or disubstituted by T or 3) phenyl-Q-Het-2, in which Het-2 is selected from the group consisting of quinolinyl, quinoxalinyl, furanyl, indolyl, isoquinolinyl, isothiazolyl, isoxazolyl, oxadiazolyl, piperidinyl, pyrazolyl, pyridazinyl, pyrimidinyl, pyridyl, pyrimidinyl, pyrrolyl, thiadiazolyl, thiazolyl, thienyl, thienopyrrolyl or thienothiophenyl, and in which phenyl and Het-2 in each case independently of one another are unsubstituted or mono- or disubstituted by T, Q is a covalent bond, —CH 2 —, —N(CH 3 )— or —O—, T is 1) F, Cl or Br, 2) —(C 1 -C 4 )-alkyl, in which alkyl are unsubstituted or independently mono- or disubstituted by —CF 3 or —N—C(O)—CH 3 , or 3) —NO 2 , and R5 and R6 are in each case a hydrogen atom.