A series of cephalosporins containing a novel 7-[2-(Z)-(2-amino-thiazol-4-yl)-3-(dimethoxyphosphoryl)-acryloylamino] group were prepared and their antibacterial activity measured against a range of pathogens. In general the compounds displayed a broad spectrum of activity against both Gram positive and Gram negative organisms, except Pseudomonas aeruginosa. Activity against the latter could be achieved by introducing a catechol moiety at the 3 position of the cephalosporin. The methyl phosphonates in general were stable to a wide range of β-Mactamases, including the TEM enzymes and the Enterobacter cloacae P99 chromosomal enzyme. In addition, they showed the advantage of being highly water soluble.
一系列含有新颖7-[2-(Z)-(
2-氨基噻唑-4-基)-3-(二甲氧基
磷酸酰基)-
丙烯酰
氨基]基团的
头孢菌素被制备,并测量了它们对多种病原体的抗菌活性。一般来说,这些化合物对革兰阳性和革兰阴性
生物表现出广谱活性,除了
铜绿假单胞菌。通过在
头孢菌素的3位引入
儿茶酚基团,可以获得对后者的活性。总体而言,
甲基膦酸酯对广泛的β-内酰胺酶,包括
TEM酶和克雷伯菌P99染色体酶,表现出稳定性。此外,它们具有高度
水溶性的优点。