| abstract |
(57) [Summary] (Revised) [Purpose] 1-azabicyclo- [3,3, which has antibacterial activity Providing a 2,0] hept-2-ene-2-carboxylic acid compound. [Structure] A compound represented by the following formula or a pharmaceutically acceptable salt thereof, a method for producing the same, and an antibacterial agent containing the compound or a salt thereof as an active ingredient. [R 1 is a carboxy group or a protected carboxy group, R 2 is a hydroxy (lower) alkyl group or a protected hydroxy (lower) alkyl group, R 3 is hydrogen or a lower alkyl group, R 4 is hydrogen, a 2-hydroxyethyl group, etc., R 5 is hydrogen or a thiadiazolyl group] |