期刊
MARINE DRUGS
卷 12, 期 7, 页码 3970-3981出版社
MDPI
DOI: 10.3390/md12073970
关键词
Penaeus vannamei; endophytic fungus Aspergillus flavus; indole-diterpenoids; bioactivity
资金
- NSFC [21172204, 41376148]
- 973 Program of China [2010CB833804]
- 863 Program of China [2013AA092901, 2012AA092104]
- Special Fund for Marine Scientific Research in the Public Interest of China [2010418022-3]
Two new indole-diterpenoids (1 and 2) and a new isocoumarin (3), along with the known beta-aflatrem (4), paspalinine (5), leporin B (6), alpha-cyclopiazonic acid (7), iso-alpha-cyclopiazonic acid (8), ditryptophenaline (9), aflatoxin B-1 (10), 7-O-acetylkojic acid (11) and kojic acid (12), were isolated from the fermentation broth of the marine-derived fungus, Aspergillus flavus OUCMDZ-2205. The structures of Compounds 1-12 were elucidated by spectroscopic analyses, quantum ECD calculations and the chemical method. New Compound 1 exhibited antibacterial activity against Staphylococcus aureus with a MIC value of 20.5 mu M. Both new Compounds 1 and 2 could arrest the A549 cell cycle in the S phase at a concentration of 10 mu M. Compound 1 showed PKC-beta inhibition with an IC50 value of 15.6 mu M. In addition, the absolute configurations of the known compounds, 4-6 and leporin A (6a), were also determined for the first time.
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