| abstract |
(57) [Summary] (Modifications) [PROBLEMS] To provide novel compounds exhibiting selective bactericidal / fungicidal activity and compositions containing them. SOLUTION: The following formula (I) Wherein R 1 and R 2 each independently represent hydrogen or an optionally substituted alkyl, alkenyl, alkynyl, alkadienyl, aryl, heteroaryl, cycloalkyl, bicycloalkyl or heterocyclyl group, or R 1 and R 2 R 2 together with an adjacent nitrogen atom represents an optionally substituted heterocyclic ring; R 3 is a hydrogen or halogen atom or a group —NR 5 R 6 , wherein R 5 and R 6 each independently represent the same as R 1 and R 2 ); R 4 represents hydrogen or an alkyl or aryl group; A represents N or CR 7 (where R 7 is the same as R 4 ) And a compound represented by the formula: |