期刊
MOLECULES
卷 24, 期 14, 页码 -出版社
MDPI
DOI: 10.3390/molecules24142642
关键词
Aspergillus sclerotiorum; gamma-hydroxyl butenolides; cyclopentenones; enantiomer; cytotoxicity; antimicrobial activity
资金
- National Natural Science Foundation of China [31270082]
- Natural Science Foundation of Shandong Province, China [Y2008B17]
Three new gamma-hydroxyl butenolides (1-3), a pair of new enantiomeric spiro-butenolides (4a and 4b), a pair of enantiomeric cyclopentenones (5a new and 5b new natural), and six known compounds (6-11), were isolated from Aspergillus sclerotiorum. Their structures were established by spectroscopic data and electronic circular dichroism (ECD) spectra. Two pairs of enantiomers [(+)/(-)-6c and (+)/(-)-6d] obtained from the reaction of 6 with acetyl chloride (AcCl) confirmed that 6 was a mixture of two pairs of enantiomers. In addition, the X-ray data confirmed that 7 was also a racemate. The new metabolites (1-5) were evaluated for their inhibitory activity against cancer and non-cancer cell lines. As a result, compound 1 exhibited moderate cytotoxicity to HL60 and A549 with IC50 values of 6.5 and 8.9 mu M, respectively, and weak potency to HL-7702 with IC50 values of 17.6 mu M. Furthermore, compounds 1-9 were screened for their antimicrobial activity using the micro-broth dilution method. MIC values of 200 mu g/mL were obtained for compounds 2 and 3 towards Staphylococcus aureus and Escherichia coli, while compound 8 exhibited a MIC of 50 mu/mL towards Candida albicans.
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