期刊
MAGNETIC RESONANCE IN CHEMISTRY
卷 52, 期 5, 页码 247-250出版社
WILEY
DOI: 10.1002/mrc.4049
关键词
NMR; H-1 NMR; C-13 NMR; two-dimensional NMR; arisugacin K; Penicillium echinulatum
资金
- National Natural Science Foundations of China [41106136, 41106137]
- 12th Five-Year Science and Technology Plan for Agriculture [2012BAD32B09]
- Chinese Academy of Sciences for Key Topics in Innovation Engineering [KZCX2-YW-QN209]
One new meroterpene, arisugacin K (1), and four known ones, arisugacin J (2), arisugacin G (3), arisugacin C (4), and territrem C (5), were isolated from the culture of Penicillium echinulatum pt-4, an endophytic fungus isolated from the marine red alga Chondrus ocellatus. The structure and the absolute configuration of 1 were unambiguously elucidated by spectroscopic analyses and quantum chemical calculations, which further resulted in the assignments of absolute configurations for the other arisugacins and territrems. Compound 1 showed inhibitory activity against Escherichia coli with an inhibition diameter 8mm at 30 mu g/disk and 4 exhibited lethality against Artemia salina with an LC50 of 48.6 mu g/ml. Copyright (c) 2014 John Wiley & Sons, Ltd.
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