Synthesis of a Small Library of Nature-Inspired Xanthones and Study of Their Antimicrobial Activity
作者:Diana I. S. P. Resende、Patrícia Pereira-Terra、Joana Moreira、Joana Freitas-Silva、Agostinho Lemos、Luís Gales、Eugénia Pinto、Maria Emília de Sousa、Paulo Martins da Costa、Madalena M. M. Pinto
DOI:10.3390/molecules25102405
日期:——
in-house series of aminated xanthones 16–33, was tested for in-vitro antimicrobial activity against seven bacterial (including two multidrug-resistant) strains and five fungal strains. 1-(Dibromomethyl)-3,4-dimethoxy-9H-xanthen-9-one (7) and 1-(dibromomethyl)-3,4,6-trimethoxy-9H-xanthen-9-one (8) exhibited antibacterial activity against all tested strains. In addition, 3,4-dihydroxy-1-methyl-9H-xanthen-9-one
基于替代(附属物)多样性反应制备了一系列 13 个氧杂蒽酮 3-15。根据光谱数据和 HRMS 对该系列进行了结构表征,并通过单晶 X 射线衍射确定了氧杂蒽酮衍生物 1、7 和 8 的结构。该系列连同内部系列的胺化氧杂蒽酮 16-33,测试了对七种细菌(包括两种多重耐药性)菌株和五种真菌菌株的体外抗菌活性。1-(二溴甲基)-3,4-二甲氧基-9H-xanthen-9-one (7) 和 1-(二溴甲基)-3,4,6-三甲氧基-9H-xanthen-9-one (8) 表现出抗菌活性针对所有测试菌株。此外,3,4-dihydroxy-1-methyl-9H-xanthen-9-one (3) 显示出对皮肤癣菌临床菌株(T. rubrum FF5、M. canis FF1 和 E. floccosum FF9),所有测试菌株的 MIC 为 16 µg/mL。化合物 3 和 26 对两种白色念珠