申请人:Bristol-Myers Company
公开号:US04198506A1
公开(公告)日:1980-04-15
Certain 7-acylamido-3-(2-carboxyalkyl-2,3-dihydro-s-triazolo[4,3-b]pyridazin-3-on- 6-ylthiomethyl)-3-cephem-4-carboxylic acids and their salts and easily hydrolyzed esters of the 4-carboxyl group were synthesized and found to be potent antibacterial agents which exhibited good aqueous solubility. A preferred embodiment was 7-[o-(methylaminomethyl)phenylacetamido]-3-(2-carboxyalkyl-2,3-dihydro-s-t riazolo[4,3-b]pyridazin-3-on-6-ylthiomethyl)-3-cephem-4-carboxylic acid.
某些7-酰胺基-3-(2-羧基烷基-2,3-二氢-s-三唑并[4,3-b]吡嗪-3-酮-6-基硫甲基)-3-头孢烷-4-羧酸及其盐和4-羧基易水解酯类被合成并发现具有很强的抗菌活性,同时表现出良好的水溶性。其中一种优选的实施方式是7-[o-(甲基氨甲基)苯乙酰胺基]-3-(2-羧基烷基-2,3-二氢-s-三唑并[4,3-b]吡嗪-3-酮-6-基硫甲基)-3-头孢烷-4-羧酸。