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:
wherein R is a hydrogen atom or a C
1-10
alkyl group; R
1
is a hydrogen atom, a C
1-10
alkyl group, a C
3-8
cycloalkyl group or a substituent having the structure represented by the following formula Ia or Ib:
where R
3
is a C
1-6
alkyl group; R
4
is a C
1-6
alkyl group, a C
3-8
cycloalkyl group, or a benzyl group; and R
2
is a hydrogen atom or a substituent having the structure represented by the following formula Ic or Id:
本发明提供了具有优越的
TAFIa抑制活性的化合物。它们是由以下
化学式(I)表示的二
氢咪唑喹啉化合物或其药学上可接受的盐:其中R是
氢原子或C1-10烷基;R1是
氢原子、C1-10烷基、C3-8
环烷基或具有以下
化学式Ia或Ib表示的取代基:其中R3是C1-6烷基;R4是C1-6烷基、C3-8
环烷基或
苄基;R2是
氢原子或具有以下
化学式Ic或Id表示的取代基: