申请人:Wang Yuqiang
公开号:US20120115874A1
公开(公告)日:2012-05-10
The present invention provides pyrazine derivatives of formula I
and pharmaceutically acceptable salts thereof, wherein the designation of R
1
, R
2
, R
3
and R
4
is provided herein. The invention also provides syntheses for preparation of such compounds. The invention further provides methods of use of these compounds and pharmaceutical compositions containing them for treatment and/or prevention of diseases and for manufacture of medicaments. These compounds and pharmaceutical compositions have antioxidative and thrombolytic effects, and thus can be used for the treatment and/or prevention of cerebral stroke caused by ischemia, and used for manufacture of medicaments for the treatment and/or prevention of nervous system diseases caused by excessive amount of radicals and/or thrombosis, infectious diseases, metabolic system diseases, cardiovascular and cerebrovascular diseases, and age-related degenerative diseases.