indolediketopiperazine alkaloids from eurotium cristatum en-220, an endophytic fungus isolated from the marine alga sargassum thunbergii

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ID: 239660
2017
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Abstract
Four new indolediketopiperazine derivatives (1–4), along with nine known congeners (5–13), were isolated and identified from the culture extract of Eurotium cristatum EN-220, an endophytic fungus obtained from the marine alga Sargassum thunbergii. The structures of thesecompounds were elucidated on the basis of extensive spectroscopic analysis and the absolute configurations of compounds 1–4 were established by NOESY experiments and by chiral HPLC analyses of their acid hydrolysates. The absolute configuration of C-8 (a quaternary carbon substituted with a hydroxyl group) in 5 of preechinulin class was firstly determined by electronic circular dichroism (ECD) calculations. All these compounds were evaluatedfor brine shrimp (Artemia salina) lethality and nematicidal activity as well as antioxidativeand antimicrobial potency.
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du2017marineindolediketopiperazine Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Feng-Yu Du;Xin Li;Xiao-Ming Li;Li-Wei Zhu;Bin-Gui Wang
Journal jixie gongcheng xuebao/journal of mechanical engineering
Year 2017
DOI
10.3390/md15020024
URL
http://www.mdpi.com/1660-3397/15/2/24
Keywords
endophytic fungus bioactivitybiology (general) indolediketopiperazine

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