Synthesis and antibacterial activity of lactivicin derivatives.
作者:Norikazu TAMURA、Yoshihiro MATSUSHITA、Yasuhiko KAWANO、Kouichi YOSHIOKA
DOI:10.1248/cpb.38.116
日期:——
chemical modification of the 4-acetylamino group on the cycloserine moiety of lactivicin (1a) was carried out. The lactivicin derivatives (1d, k--p and w) having heterocyclic acylamino groups which have been often utilized in beta-lactam antibiotics showed potent antibacterial activities. Ester prodrugs (7a--d) of lactivicin derivatives were also prepared in order to improve the bioavailability on oral administration
对lactivicin(1a)的环丝氨酸部分上的4-乙酰氨基进行了化学修饰。具有杂环酰基氨基的lactivicin衍生物(1d,kp和w)通常在β-内酰胺类抗生素中使用,具有很强的抗菌活性。还制备了lactivicin衍生物的酯前药(7a-d),以提高口服给药的生物利用度。发现新戊酰氧基甲基(POM)酯(7a和7b)和1-乙氧基羰基氧基乙基(EOE)酯(7c)与它们的母体化合物1c和1k相比在体内的保护作用略有改善。