Synthesis and Antibacterial Properties of Novel Hydrolyzable Cationic Amphiphiles. Incorporation of Multiple Head Groups Leads to Impressive Antibacterial Activity
作者:Jayanta Haldar、Paturu Kondaiah、Santanu Bhattacharya
DOI:10.1021/jm049106l
日期:2005.6.1
(CPB). The killing effects of the new single-headed amphiphiles (T1 and P1) were lower than those of CTAB and CPB, but with an increase in the number of headgroups in the amphiphiles, the killing effects increased for both sets of compounds. It was found that amphiphiles with triple headgroups (T3 and P3) were most active among all the amphiphiles, whereas amphiphile P1 had a very poor killing effect
合成了两套带有一个,两个和三个三甲基铵头基(T1,T2和T3)和吡啶鎓头基(P1,P2和P3)的新型多头阳离子两亲物,并测试了它们对革兰氏阳性和革兰氏阴性菌的抗菌活性。革兰氏阴性细菌。这些两亲物中的多阳离子头基通过可裂解的酯型键共价连接。将结果与已知的表面活性,不可水解的化合物十六烷基三甲基溴化铵(CTAB)和十六烷基溴化吡啶鎓(CPB)的结果进行了比较。新的单头两亲物(T1和P1)的杀伤作用低于CTAB和CPB,但随着两亲物中头基数目的增加,两组化合物的杀伤作用均增加。发现在所有两亲中,具有三个头基的两亲(T3和P3)最活跃,而两亲P1对这两种细菌的杀灭效果都非常差。与三甲基铵对应物相比,多头吡啶鎓两亲物活性更高。用多头两亲物杀死细菌所需的时间明显少于单头两亲物。由于存在可裂解的酯部分,这些新的两亲物在生理条件下自发水解。这种特性使它们易于代谢,因此有可能成为食品和身体表面的优质