COMPOUNDS HAVING TAFIa INHIBITORY ACTIVITY

摘要

The present invention provides compounds having superior TAFIa inhibitory activity. They are dihydroimidazoquinoline compounds represented by the following formula (I) or pharmaceutically acceptable salts thereof: (I) wherein R is a hydrogen atom or a C1-10 alkyl group; R1 is a hydrogen atom, a C1-10 alkyl group, a C3-8 cycloalkyl group or a substituent having the structure represented by the following formula Ia or Ib: (Ia) (Ib) where R3 is a C1-6 alkyl group; R4 is a C1-6 alkyl group, a C3-8 cycloalkyl group, or a benzyl group; and R2 is a hydrogen atom or a substituent having the structure represented by the following formula Ic or Id:(Ic) (Id)