abstract |
(57) [Abstract] [PROBLEMS] To provide a transient cerebral ischemic attack inhibitor showing excellent preventive and therapeutic effects. SOLUTION: Formula [R 1 is pyridyl, R 2 is phenyl, thienyl, furyl, naphthyl, benzothienyl or pyridyl optionally substituted with alkoxy, alkyl, halogen, trifluoromethyl, alkenyl or methylenedioxy, Y is sulfur, methylene or [Chemical 2] |