| 摘要 |
PROBLEM TO BE SOLVED: To obtain a new compound capable of acting on a central nerve, especially having an antispasmodic action. SOLUTION: The compounds are represented by formula (I) [R is an aryl, an aryl lower alkyl group or the like; R1 is hydrogen, a lower alkyl, a lower alkenyl, a lower alkynyl, an aryl lower alkyl, an aryl or the like; R2 and R3 are hydrogen, a lower alkenyl, a lower alkynyl or the like; n is 1-4; A and Q are independently O or S], their N-oxides or pharmaceutically acceptable salts and anticonvulsants comprising them.
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