Semisynthetic .BETA.-lactam antibiotics. IV. Synthesis and antibacterial activity of new ureidocephalosporin and ureidocephamycin derivatives containing a catechol moiety or its acetate.
作者:NOBUHIRO OHI、BUNYA AOKI、TEIZO SHINOZAKI、KANZI MORO、TOSHIO KUROKI、TAKAO NOTO、TOSHIYUKI NEHASHI、MASAHIKO MATSUMOTO、HIROSHI OKAZAKI、ISAO MATSUNAGA
DOI:10.1248/cpb.35.1903
日期:——
New ureidocephalosporin and ureidocephamycin derivatives containing a catechol moiety or its acetate were prepared and their minimum inhibitory concentration values against various microorganisms were determined. Among these compounds, the ureidocephalosporins (2, 3Aa, 3Ba) and ureidocephamycins (4, 5) carrying a methyl group on the nitrogen atom of the ureido bond showed strong activities against Pseudomonas aeruginosa. 7β- [(R) -2-[3- (3, 4-Dihydroxybenzoyl) -3-methylureido] -2-phenylacetamido] -7α-methoxy-3- [(1-methyl-1H-tetrazol-5-yl) -thiomethyl] -3-cephem-4-carboxylic acid (5) had the most potent activity in vitro against gramnegative bacteria, its activity being 8-to 32-fold and 4-fold greater than those of cefoperazone and ceftazidime, respectively, against two strains of P. aeruginosa. The structure-activity relationship is discussed.
制备了含有儿茶酚分子或其乙酸酯的新型脲基头孢菌素和脲基头孢霉素衍生物,并测定了它们对各种微生物的最小抑菌浓度值。在这些化合物中,脲基头孢菌素(2、3Aa、3Ba)和在脲基键的氮原子上带有一个甲基的脲基头孢菌素(4、5)对铜绿假单胞菌具有很强的活性。7β- [(R)-2-[3-(3,4-二羟基苯甲酰基)-3-甲基脲基] -2-苯乙酰胺基] -7α-甲氧基-3-[(1-甲基-1H-四唑-5-基)-硫代甲基] -3-头孢-4-羧酸(5)在体外对革兰氏阴性菌具有最强的活性、对两株绿脓杆菌的活性分别是头孢哌酮和头孢他啶的 8 至 32 倍和 4 倍。铜绿假单胞菌的活性分别是头孢哌酮和头孢他啶的 8 至 32 倍和 4 倍。本文讨论了其结构与活性之间的关系。