Synthesis of heterocycle-attached methylidenebenzenesulfonohydrazones as antifungal agents
                                
                                    
                                        作者:Zhinan Gao、Min Lv、Qin Li、Hui Xu                                    
                                    
                                        DOI:10.1016/j.bmcl.2015.10.017
                                    
                                    
                                        日期:2015.11
                                    
                                    A series of heterocycle-attached methylidenebenzenesulfonohydrazone derivatives were synthesized and evaluated for their antifungal activities against seven phytopathogenic fungi such as Fusarium graminearum, Alternaria solani, Valsa mali, Phytophthora capsici, Fusarium solani, Botrytis cinerea, and Glomerella cingulata. Compounds 7b, 8d, 9a, 9b and 9d exhibited a good and broad-spectrum of antifungal activities against at least five phytopathogenic fungi at the concentration of 100 mu g/mL. It demonstrated that addition of one double bond between the phenylsulfonylhydrazone fragment and the furan ring of 6a,b,d could afford more active compounds 9a,b,d; however, introduction of the nitro group on the phenyl ring of 6a-9a gave less potent compounds 6e-9e. (C) 2015 Elsevier Ltd. All rights reserved.