| 摘要 |
<p>Compounds represented by general formula (1) which have NOS inhibitory activities and are useful as drugs, for example, remedies for cerebrovascular disorders, wherein R1 and R2 represent each hydrogen, etc.; R3 and R4 represent each hydrogen, lower alkyl, etc.; R5 represents hydrogen, etc.; X1, X2, X3 and X4 represent each hydrogen, lower alkoxyl, etc.; A represents an optionally substituted pyridine ring, etc.; and m and n are each 0 or 1.</p> |
