在过去几年里,新的头孢菌素衍生物相继出现。值得提及的10种头孢菌素中,已供临床使用的有8种,2种在研究中(表1)。除了第一代的头孢菌素Ⅰ和头孢菌素Ⅱ外,目前可供使用的有6种较新的制剂:头孢菌素Ⅲ(头孢甘酸、先锋霉素Ⅲ,Cephalexin),头孢菌素Ⅳ(苯甘头孢菌素,头孢力新、先锋霉素Ⅳ,Cephalexin),环烯头孢菌素(Cephradine),唑啉头孢菌素(Cefazolin), In the past few years, new cephalosporin derivatives have emerged. Of the 10 cephalosporins worth mentioning, eight are available for clinical use and two are in the study (Table 1). In addition to the first generation of cephalosporin I and cephalosporin II, currently available for use are six newer formulations: cephalosporins III (cephalosporin, cephalosporin III, Cephalexin), cephalosporins Ⅳ Cephalosporin, cephalexin, cephalexin, Cephalexin), Cephradine, Cefazolin,