Structure-Based Optimization of Azole Antifungal Agents by CoMFA, CoMSIA, and Molecular Docking
作者:Chunquan Sheng、Wannian Zhang、Haitao Ji、Min Zhang、Yunlong Song、Hui Xu、Jie Zhu、Zhenyuan Miao、Qingfen Jiang、Jianzhong Yao、Youjun Zhou、Jü Zhu、Jiaguo Lü
DOI:10.1021/jm051211n
日期:2006.4.1
In a continuing effort to develop highly potent azole antifungal agents, the three-dimensional quantitative structure-activity relationship methods. CoMFA and CoMSIA, were applied using a set of novel azole antifungal compounds. The binding mode of the compounds at the active site of lanosterol 14 alpha-demethylase was further explored using the flexible docking method. Various hydrophobic, van der Waals,pi-pi stacking, and hydrogen bonding interactions were observed between the azoles and the enzyme. Based on results from the molecular modeling, a receptor-based pharmacophore model was established to guide the rational optimization of the azole antifungal agents. Thus, a total of 57 novel azoles were designed and synthesized by a three-step optimization process. In vitro antifungal assay revealed that the antifungal activities of these novel azoles were greatly improved, which confirmed the reliability of the model from molecular modeling.