A series of novel 2,3-dihydro-4H-1-benzoselenin-4-one (thio)semicarbazone derivatives were designed and synthesized by using molecular hybridization approach. All the target compounds were characterized by HRMS and NMR and evaluated in vitro antifungal activity angainst five pathogenic strains. In comparison with precursor selenochroman-4-ones, the hybrid molecules in this study showed significant improvement in antifungal activities. Notably, compound B8 showed significant antifungal activity against other strains excluding Aspergillus fumigatus (0.25 μg/mL on Candida albicans, 2 μg/mL on Cryptococcus neoformans, 8 μg/mL on Candida zeylanoides and 2 μg/mL on fluconazole-sensitive strains of Candida albicans). Moreover, compounds B8, B9 and C2 also displayed most potent activities against four fluconazole-resistance strains. Especially the MIC values of the hybrid molecule B8 against fluconazole-resistant strains were in the range of 0.5-2 μg/mL. Therefore, the molecular hybridization approach in this study provided new ideas for the development of antifungal drug.

通过分子杂交的方法，设计合成了一系列新颖的2，3-二氢-4 H -1-苯并硒啉-4-酮（硫代）半碳zone酮衍生物。所有目标化合物均通过HRMS和NMR进行了表征，并针对五种病原菌株评估了其体外抗真菌活性。与前体硒代苯并二氢吡喃-4-酮相比，本研究中的杂化分子显示出显着的抗真菌活性。值得注意的是，化合物B8对除烟曲霉以外的其他菌株均表现出显着的抗真菌活性（白色念珠菌为0.25μg/ mL，新隐球菌为2μg/ mL，玉米芽孢杆菌为8μg / mL）。氟康唑敏感菌株白色念珠菌（Candida albicans）的浓度为2μg/ mL ）。此外，化合物B8，B9和C2还显示出对四种氟康唑耐药菌株的最有效活性。特别地，杂合分子B8对耐氟康唑的菌株的MIC值在0.5-2μg/ mL的范围内。因此，本研究中的分子杂交方法为抗真菌药物的开发提供了新思路。