antibiotic activity on the size and degree of unsaturation of the precursor. Based on these leads, we also report the precursor-directed biosynthesis of 15-propargyl erythromycin A, a novel antibiotic that not only is as potent as erythromycin A with respect to its ability to inhibit bacterial growth and cell-free ribosomal protein biosynthesis but also harbors an orthogonal functional group that is capable
大环
内酯类抗生素红霉素 A 及其半合成类似物已成为治疗传染病最有用的抗菌剂之一。使用最近开发的用于 6-
脱氧红霉素 D 类似物的前体导向
生物合成和菌落
生物测定的
化学遗传策略,我们确定了一类新的炔基和
烯基取代的大环
内酯类,其活性与
天然产物的活性相当。进一步的分析揭示了
抗生素活性对前体的大小和不饱和度的显着和出乎意料的依赖性。基于这些线索,我们还报告了 15-炔丙基
红霉素 A 的前体导向
生物合成,