Journal
MARINE DRUGS
Volume 10, Issue 6, Pages 1331-1344Publisher
MDPI AG
DOI: 10.3390/md10061331
Keywords
soft coral; Sinularia sp.; sinularones A-I; structural elucidation; antifouling activity
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Funding
- NSFC [30930109]
- National Key Innovation Project [2009ZX09501-014, 2009ZX09103-140, 201005022-4]
- International Cooperation Projects [2010DFA31610]
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Nine new compounds, namely sinularones A-I (1-9), characterized as cyclopentenone and butenolide-type analogues, were isolated from a soft coral Sinularia sp., together with a known butenolide (10). Their structures were elucidated by means of spectroscopic (IR, MS, 1D and 2D NMR, CD) analysis. The absolute configurations were determined on the basis of CD and specific rotation data in association with the computed electronic circular dichroism (ECD) by time dependent density functional theory (TD DFT) at 6-31+G(d,p)//DFT B3LYP/6-31+G(d,p) level. Compounds 1-2 and 7-10 showed potent antifouling activities against the barnacle Balanus amphitrite.
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