Pyrrolomycins as antimicrobial agents. Microwave-assisted organic synthesis and insights into their antimicrobial mechanism of action
作者:Maria Valeria Raimondi、Roberta Listro、Maria Grazia Cusimano、Mery La Franca、Teresa Faddetta、Giuseppe Gallo、Domenico Schillaci、Simona Collina、Ainars Leonchiks、Giampaolo Barone
DOI:10.1016/j.bmc.2019.01.010
日期:2019.3
counteract staphylococcal biofilm formation are needed. In this study we investigate the mechanism of action of pyrrolomycins, whose potential as antimicrobial agents has been demonstrated. We performed a new efficient and easy method to use microwave organic synthesis suitable for obtaining pyrrolomycins in good yields and in suitable amount for their in vitro in-depth investigation. We evaluate the inhibitory
需要能够抵消葡萄球菌生物膜形成的新化合物。在这项研究中,我们研究了吡咯霉素的作用机理,吡咯霉素具有作为抗菌剂的潜力。我们进行了一种新的有效而简便的方法,以使用微波有机合成方法以高产率和适量获得吡咯霉素,以进行体外深入研究。我们评估对分选酶A(SrtA)的抑制活性,分选酶是负责共价锚定在革兰氏阳性肽聚糖中参与粘附和生物膜形成的许多表面蛋白的转肽酶。所有化合物均对SrtA表现出良好的抑制活性,IC50值在130至300 µM之间,与盐酸小ber碱相当。值得注意的是,化合物1d在对接实验中显示出对SrtA的良好亲和力,并且具有最高的干扰金黄色葡萄球菌生物膜形成的能力,IC50为3.4 nM。该化合物还可以有效地改变金黄色葡萄球菌的murein水解酶的活性,已知该活性与细菌肽聚糖的降解,周转和成熟有关,并且参与了金黄色葡萄球菌生物膜形成的初始阶段。