Chemical constituents of <em>Aspergillus udagawae</em> isolated from the soil of the Xingren coal areas and their antibacterial activities

Nat Prod Res. 2022 Oct 25:1-8. doi: 10.1080/14786419.2022.2137798. Online ahead of print.


A new helvolic acid derivative (1), together with nine known compounds (2-10) were isolated from the metabolites of Aspergillus udagawae MST1-10 with the bioassay-guided fractionation method. Their structures were identified on the basis of spectroscopic analysis. The absolute configuration of compound 1 was elucidated through NOESY and ECD spectra. Compound 2 displayed significant antibacterial activities against Stenotrophomonas maltophilia with MIC value of 2 μg/mL (Trimethoprim, MIC = 64 μg/mL), and with biofilm inhibition rates of 96.41%, 87.77%, and 41.70% at 4MIC, 2MIC, and MIC, respectively.

PMID:36282894 | DOI:10.1080/14786419.2022.2137798

Source: Industry