Patent ID: 6995182

Claim:
A compound of the formula wherein R 1 is aryl, which is unsubstituted or substituted by halogen; R 2 is aryl, which is unsubstituted or substituted by halogen or lower alkyl; R 3 is N-hydroxy-amidino, —C(O)NR′R″, —N(R′)—C(O)—R 4 , —N(R′)—C(S)—NR′″R or a 5-membered heteroaryl ring containing from 1 to 4 N or O heteroatoms, said ring being unsubstituted or substituted by lower alkyl or cycloalkyl; R 4 is cycloalkyl, phenyl or lower alkyl, which is unsubstituted or substituted by halogen R is lower alkyl; R′ and R′″ are lower alkyl or cycloalkyl-lower alkyl; R″ is hydrogen, lower alkyl or lower alkyl substituted by a 5- or 6-membered heteroaryl ring containing from 1 to 4 N or O heteroatoms, said ring being unsubstituted or substituted by lower alkyl or cycloalkyl, and n is an integer from 2 to 5; or a pharmaceutically acceptable salt thereof.