Studies on orally active cephalosporins. I. Synthesis and structure-activity relationships of new 3-substituted carbamoyloxymethyl cephalosporins.
作者:SHIGETO NEGI、MOTOSUKE YAMANAKA、ISAO SUGIYAMA、YUKI KOMATSU、MANABU SASHO、AKIHIKO TSURUOKA、ATSUSHI KAMADA、ITARU TSUKADA、RYOICHI HIRUMA、KANEMASA KATSU、YOSHIMASA MACHIDA
DOI:10.7164/antibiotics.47.1507
日期:——
The synthesis and antibacterial activities of 7 beta-[2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetamido]-3-N,N - dimethylcarbamoyloxymethyl-3-cephem-4-carboxylic acid (E1100) and its analogs are described, as well as oral absorbability and in vivo activities of the 1-(isopropoxycarbonyloxy)ethyl ester (E1101) and its analogous esters. The introduction of acyclic and cyclic lower alkyl groups at the N-position
7β-[2-(2-氨基噻唑-4-基)-2-羟基亚氨基乙酰胺基] -3-N,N-二甲基氨基甲酰氧基甲基-3-cephem-4-羧酸(E1100)及其类似物的合成及抗菌活性为描述了1-(异丙氧基羰基氧基)乙基酯(E1101)及其类似酯的口服吸收性和体内活性。在3-氨基甲酰氧基甲基头孢烯的N-位引入无环和环状低级烷基会影响抗菌活性,特别是对流感嗜血杆菌的抗菌活性,以及它们的前药酯的口服吸收性。还讨论了结构-活性关系。