在青霉素类、头孢菌素类和其它β-内酰胺抗生素类中目前已有50多种被应用于临床或正处于临床试验或开发评价阶段。这些化合物中的许多成员具有很相似的特性并有类似命名,但是在另外一些场合下这些特性确实是不相同的。随着β-内酰胺抗生素类大量出现,每一种β-内酰胺抗生素的特性是什么?以及如何区分它们彼此间的不同点是相当困难的。因此,本文目的就是要以一 More than 50 of the penicillins, cephalosporins and other beta-lactam antibiotics are currently in clinical use or are in clinical trials or developmental evaluations. Many of these compounds have very similar properties and have similar names, but these properties do not quite the same on other occasions. With the advent of a large number of β-lactam antibiotics, what is the nature of each β-lactam antibiotic and how to distinguish them from each other? Therefore, the purpose of this article is to take one