| abstract |
(57) [Summary] [Structure] General formula [Chemical formula 1] (I) [wherein R 1 is an amino group or an acylamino group, R 2 Represents a carboxy group or a protected carboxy group and R 3 represents a 3- to 8-membered saturated heteromonocyclic group which may have a suitable substituent]], and a novel cephem compound or a salt thereof. [Effect] The target compound (I) and its pharmaceutically acceptable salts are novel, exert a strong antibacterial action, prevent the growth of a wide variety of pathogenic bacteria including Gram-positive bacteria and Gram-negative bacteria, and are useful as antibacterial drugs. Is. |