μg mL−1. Compounds 12h, 12j and 12k showed promising antifungal activity against all the tested fungal pathogens except C. neoformans ATCC 34554 compared to fluconazole. Compound 12j in which the β-lactam ring was formed using para-anisidine and benzaldehyde was found to be more potent than fluconazole against all the fungal strains with an IC50 value of <0.015 μg mL−1 for Candida albicans (ATCC 24433)
设计并合成了新型的
1,2,3-三唑连接的β-内酰胺-
氟康唑共轭物12(a–l)。该化合物对两种致病性念珠菌菌株均显示出有效的抗真菌活性。白色念珠菌A
TCC 24433和白色念珠菌A
TCC 10231的MIC值为0.0625–2μgmL -1。化合物12H,12J和12K显示出有希望的抗真菌活性与除所有测试的真菌病原体隐球菌A
TCC 34554相比,
氟康唑。使用对位形成β-内酰胺环的化合物12j对所有真菌菌株,β-茴香胺和
苯甲醛均比
氟康唑更有效,对于白色念珠菌(A
TCC 24433)的IC 50值<0.015μgmL -1。活性化合物的机理研究表明,抗真菌作用是由于麦角甾醇的抑制作用。浓度为0.125μgmL -1的化合物12h和12j分别导致麦角固醇消耗量为91.5和96.8%,而氟康唑的相同浓度下,麦角固醇消耗量为49%。分子对接研究表明,所有
氟康唑β-内酰胺共轭物12(a–l)可以以不