申请人:Senju Pharmaceutical Co., Ltd.
公开号:EP0838460A1
公开(公告)日:1998-04-29
The present invention is directed to a compound of the following formula (I) inclusive of its salt
[wherein R1 represents either carboxy which may be esterified or amidated carboxy which may be substituted; R2 represents hydrogen or lower alkyl and may be linked to R3 or R4 to form a ring; R3 and R4 may be the same or different and each represents hydrogen, lower alkyl which may be substituted, or a sulfide group which may be substituted, and R3 and R4 may conjoinedly form a ring; R5 represents a substituted phenyl group of formula (II)
(wherein R6 represents halogen or alkoxy) or a substi tuted sulfonyl group of formula (III)
―SO2-R7 (III)
(wherein R7 represents either aryl which may be substituted by lower alkyl or amino which may be substituted); n is to 0 or 1] and to a method for producing the same compound.
Having cysteine protease-inhibitory activity, the compound of the invention is of value as a prophylactic or therapeutic agent for a variety of cysteine protease-associated diseases, for example ischemic diseases, inflammatory diseases, myodystrophy, immune diseases, essential hypertension, Alzheimer's disease, subarachnoid hemorrhage, and osteoporosis.
本发明涉及下式(I)的化合物及其盐类
[其中 R1 代表可被酯化的羧基或可被取代的酰胺化羧基;R2 代表氢或低级烷基,并可与 R3 或 R4 连接形成环;R3 和 R4 可以相同或不同,且各自代表氢、可被取代的低级烷基或可被取代的硫化物基团,R3 和 R4 可连接形成环;R5 代表式(II)的取代苯基(其中 R6 代表卤素或烷氧基)或式(III)的取代磺酰基。
(其中 R6 代表卤素或烷氧基)或式(III)的取代磺酰基
-SO2-R7 (III)
(其中 R7 代表可被低级烷基取代的芳基或可被取代的氨基);n 为 0 或 1]以及生产相同化合物的方法。
本发明化合物具有半胱氨酸蛋白酶抑制活性,可作为多种半胱氨酸蛋白酶相关疾病的预防或治疗药物,例如缺血性疾病、炎症性疾病、肌营养不良、免疫性疾病、本质性高血压、阿尔茨海默病、蛛网膜下腔出血和骨质疏松症。