Compounds represented by the following formula (I), that is, cephem derivatives having substituted or unsubstituted 3-(imidazo[5,1-b]thiazolium-6-yl)-1-propenyl as a substituent at the 3-position of the cephem ring:
下式(I)所代表的化合物,即在头孢环的 3 位上具有取代或未取代的 3-(
咪唑并[5,1-b]
噻唑-6-基)-
1-丙烯基的头孢衍
生物: