Synthesis, in vitro antibacterial activities of a series of 3- N -substituted canthin-6-ones
作者:Jiang-Kun Dai、Wen-Jia Dan、Na Li、Hong-Tao Du、Ji-Wen Zhang、Jun-Ru Wang
DOI:10.1016/j.bmcl.2015.11.070
日期:2016.1
An improved synthetic route of canthin-6-one was accomplished. To further enhance the antibacterial potency and improve water solubility, a series of 3-N-alkylated and 3-N-benzylated canthin-6-ones were designed and synthesized, and their in vitro antibacterial activities were evaluated. A clear structure-activity relationship with peak minimal inhibitory concentration (MIC) values of 0.98 (mu g.mL(-1)) was investigated. Particularly, compounds 6i-r and 6t were found to be the most potent compounds with minimal inhibitory concentration (MIC) values lower than 1.95 (mu g.mL(-1)) against Staphylococcus aureus. (C) 2015 Elsevier Ltd. All rights reserved.