The present invention relates in part to a process for the preparation of a proline derivative of formula I
wherein,
R1 is C1-7-alkyl or
wherein R4 is selected from the group consisting of C1-7-alkyl, halogen-C1-7-alkyl and phenyl optionally substituted by halogen;
R2 is halogen or halogen-C1-7-alkyl; and
R3 is selected from the group consisting of hydrogen, halogen, halogen-C1-7-alkyl, C1-7-alkoxy, halogen-C1-7-alkoxy and a 5- or 6-membered heterocyclic ring containing one or two nitrogen atoms, said ring being optionally substituted by C1-7-alkyl or halogen.
The proline derivatives of the formula I are preferential inhibitors of the cysteine protease Cathepsin S and are therefore useful to treat metabolic diseases like diabetes, atherosclerosis, abdominal aortic aneurysm, peripheral arterial disease and diabetic nephropathy.
本发明部分涉及一种制备公式I的脯
氨酸衍
生物的方法,其中,R1是C1-7烷基或其中R4选自由C1-7烷基,卤代C1-7烷基和
苯基(可选用卤素取代);R2是卤素或卤代C1-7烷基;R3选自
氢、卤素、卤代C1-7烷基、C1-7烷
氧基、卤代C1-7烷
氧基和含有一个或两个
氮原子的5-或6-成员杂环,该环可选用C1-7烷基或卤素取代。公式I的脯
氨酸衍
生物是半胱
氨酸
蛋白酶S的优先
抑制剂,因此对于治疗代谢性疾病如糖尿病、动脉粥样硬化、腹主动脉瘤、外周动脉疾病和糖尿病肾病非常有用。