The present invention provides a compound of formula (I) or a pharmacologically acceptable prodrug or salt thereof which exhibits excellent antifungal activity:
[wherein Ar1 represents a phenyl group or the like; Ar2 represents a phenylene group or the like; X represents a sulfur atom or a methylene group; R1 represents a hydrogen atom or a C1-3 alkyl group; R2 represents a hydrogen atom or a C1-3 alkyl group; and R3 represents an optionally substituted C6-10 aryl group or the like].
A compound of formula (I) or a pharmacologically acceptable prodrug or salt thereof which exhibits excellent antifungal activity:
1
wherein Ar
1
represents a phenyl group or the like; Ar
2
represents a phenylene group or the like. X represents a sulfur atom or a methylene group. R
1
represents a hydrogen atom or a C
1-3
alkyl group; R
2
represents a hydrogen atom or a C
1-3
alkyl group; and R
3
represents an optionally substituted C
6-10
aryl group or the like. Fungal infections may be prevented and/or treated by administering said compound (I) or said prodrug or salt thereof.