(1) a compound represented by the following formula(I):
wherein R represents a hydrocarbon group or heterocyclic group which may be substituted for; the ring A represents a pyridine ring having a substituent or a thiazole ring which may be substituted for; or a pharmaceutically acceptable salt thereof, and a method of its production, and
(2) an endothelin receptor antagonist, an cathepsin B inhibitor or a bone resorption suppressor comprising as an active ingredient a compound represented by the following formula (I'):
wherein R has the same definition as in term (1); the ring A' represents a pyridine ring or thiazole ring which may be substituted for; or a pharmaceutically acceptable salt thereof.
(1) 下式(I)所代表的化合物:
其中 R 代表可被取代的烃基或杂环基;环 A 代表具有取代基的
吡啶环或可被取代的
噻唑环;或其药学上可接受的盐及其生产方法,以及
(2) 一种内皮素受体拮抗剂、一种凝血酶 B
抑制剂或一种骨吸收
抑制剂,其有效成 分包括下式(I')所代表的化合物:
其中 R 的定义与术语(1)相同;环 A'代表
吡啶环或
噻唑环,可被取代;或其药学上可接受的盐。