The syntheses of 2-(2-amino-4-thiazolyl) 2-(hydroxy or alkoxy)-imino acetic acid derivatives, with the anti (E) and syn (Z) configurations, are described. By means of these compounds, the acylation of the amino-group of 7β-amino cephalosporanic acid (7-ACA) has been achieved. The two resulting series of cephalosporin derivatives-anti and syn-are markedly different with respect to their antibiotic activity
描述了具有反(E)和顺(Z)构型的2-(2-
氨基-4-
噻唑基)2-(羟基或烷氧基)-亚
氨基
乙酸衍
生物的合成。通过这些化合物,已经实现了7β-
氨基头孢烷酸(
7-ACA)的
氨基的酰化。这两个由此带来的一系列的头孢derivatives-防和顺式相对于它们的抗菌活性-are明显不同。一些合成化合物具有迄今为止所观察到的最高的抗菌活性。