Two new quinazoline alkaloids produced by Aspergillus versicolor and their antimicrobial activities

AbstractAbstractTwo new quinazoline alkaloids versicomides G–H (1 and 2), together with seven known compounds, were isolated from Aspergillus versicolor HYQZ-215 obtained from the sediment of Qarhan Salt Lake. Their structures were elucidated by NMR, HRESIMS, and quantum chemical ECD calculations data. The antimicrobial activities of these compounds were evaluated against seven agricultural pathogenic fungi and eight clinically drug-resistant bacteria.Keywords: Aspergillus versicolorquinazoline alkaloidsantimicrobial activities Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was financially supported by the Fundamental Research Funds for the Central Universities, South-Central Minzu University [CZQ22010 and YZZ20009], the National Natural Science Foundation of China [Nos. 82073714, 22007102 and 32271539].