Discovery and Structural Modification of 1-Phenyl-3-(1-phenylethyl)urea Derivatives as Inhibitors of Complement
作者:Mei Zhang、Xiao-Ying Yang、Wei Tang、Tom W. L. Groeneveld、Pei-Lan He、Feng-Hua Zhu、Jia Li、Wei Lu、Anna M. Blom、Jian-Ping Zuo、Fa-Jun Nan
DOI:10.1021/ml300005w
日期:2012.4.12
A series of 1-phenyl-3-(1-phenylethyl)urea derivatives were identified as novel and potent complement inhibitors through structural modification of the original compound from high-throughput screening. Various analogues (7 and 13-15) were synthesized and identified as complement inhibitors, with the introduction of a five- or six-carbon chain (7c, 7d, 7k, 7I, and 7o) greatly improving their activity. Optimized compound 7I has an excellent inhibition activity with IC50 values as low as 13 nM. We demonstrated that the compound 7I inhibited C9 deposition through the classical, the lectin, and the alternative pathways but had no influence on C3 and C4 depositions.