The present invention is directed to compounds of formula (I), and the pharmaceutically acceptable acid addition salts thereof, wherein R is selected from the group consisting of F,--CF.sub.3, --OCH.sub.3, --O(C.sub.1)alkyl substituted with 1 to 3 fluoro atoms. --O(C.sub.2) substituted with 1 to 5 fluoro atoms, and --O(C.sub.3)alkyl substituted with 1 to 7 fluoro atoms. The compounds of formula (I) are useful in the treatment of stroke, traumatic brain injury and central nervous system degenerative diseases.
本发明涉及化合物(I)及其药学上可接受的酸盐,其中R选自F、--CF.sub.3、--OCH.sub.3、--O(C.sub.1)烷基(1至3个
氟原子取代) 、--O(C.sub.2) 取代1至5个
氟原子,以及--O(C.sub.3)烷基(1至7个
氟原子取代)的群。化合物(I)对于中风、创伤性脑损伤和中枢神经系统退行性疾病的治疗具有用处。