| abstract |
(57) [Summary] (Modifications) [PROBLEMS] To provide a novel compound having selective bactericidal / fungicidal activity. SOLUTION: The following formula I [Wherein, R 1 is an optionally substituted alkyl, aryl, heteroaryl, etc., R 2 is hydrogen, an optionally substituted alkyl, R 3 is alkyl, R 4 is hydrogen, alkyl or aryl, L Is halogen, alkyl or alkoxy which may be substituted, A is N or CR 5 , and n is 0 or an integer of 1 to 5]. |