| abstract |
(57) Abstract: To find a pharmaceutical composition s having excellent antibacterial activity. SOLUTION: General formula (I) Wherein Ar 1 is a phenyl group or the like, Ar 2 is a phenylene group or the like, R 1 is a C 1 -C 3 alkyl group or the like, R 2 and R 3 are C 1 -C 6 alkyl group, X is, -S-, etc., p, q and r Independently represents an integer of 0 to 2. Or a pharmacologically acceptable salt thereof. |