| 摘要 |
<p>The present invention is to provide an antimicrobial agent having high safety as well as potent antimicrobial activity on broad range of microorganisms. A compound represented by the following formula, its salt and their hydrates: <CHEM> wherein R<1> and R<2> each independently represents a hydrogen atom or an alkyl group; n represents an integer of 1 to 3; R<3> represents an alkyl group, an alkenyl group, a halogenoalkyl group, a cycloalkyl group, an aryl group, a heteroaryl group, an alkoxyl group or an alkylamino group; R<4> represents a hydrogen atom or an alkylthio group; R<5> represents a hydrogen atom, an amino group, a hydroxyl group, a thiol group, a halogenomethyl group, an alkyl group, an alkenyl group, an alkynyl group or an alkoxyl group; X<1> represents a halogen atom or a hydrogen atom; and A represents a nitrogen atom or a partial structure represented by formula (II): <CHEM> wherein X<2> represents a hydrogen atom, an amino group, a halogen atom, a cyano group, a halogenomethyl group, a halogenomethoxyl group, an alkyl group, an alkenyl group, an alkynyl group or an alkoxyl group; and Y represents a hydrogen atom, a phenyl group, an acetoxymethyl group, a pivaloyloxymethyl group, an ethoxycarbonyl group, a choline group, a dimethylaminoethyl group, a 5-indanyl group, a phthalidinyl group, a 5-alkyl-2-oxo-1,3-dioxol-4-ylmethyl group, a 3-acetoxy-2-oxobutyl group, an alkyl, an alkoxymethyl group or a phenylalkyl group.</p> |
