期刊
MARINE DRUGS
卷 16, 期 8, 页码 -出版社
MDPI
DOI: 10.3390/md16080284
关键词
Arctic fungus; Eutypella sp; pimarane diterpene; bioactivity
资金
- National Natural Science Foundation of China [81741152, 41606173, 41306197]
- National High Technology Research and Development Program of China (863 Projects) [SS2012AA09160703]
- Guangdong Innovative Development of Marine Economy Regional Demonstration Project [GD2012-D01-001]
Three new pimarane diterpenes, eutypellenoids A-C (1-3), together with a known compound, eutypenoid C (4), were isolated from the culture extract of Eutypella sp. D-1 derived from the Arctic region. Compounds 1-3 possessed an uncommon tetrahydrofuran-fused pimarane diterpene skeleton. The structures of all compounds were determined by detailed spectroscopic analysis, electronic circular dichroism (ECD) analysis, as well as a comparison with the literature data. Antibacterial, antifungal, and cytotoxic activities of these compounds were evaluated. Compound 2 displayed antibacterial activity against Staphylococcus aureus and Escherichia coli with MIC values of 8 and 8 mu g/mL, respectively. Additionally, compound 2 showed antifungal activity against Candida parapsilosis, Candida albicans, Candida glabrata, and Candida tropicalis with MIC values of 8, 8,16, and 32 mu g/mL, respectively. Furthermore, compound 2 exhibited moderate cytotoxic activity against HCT-116 cell line with IC50 value of 3.7 mu M.
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