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A new compound from liquid fermentation broth of Armillaria mellea and the determination of its absolute configuration

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Pages 203-208 | Received 15 Jun 2012, Accepted 19 Nov 2012, Published online: 17 Jan 2013
 

Abstract

A new 2,5-diketopiperazine, (R)-2-(2-(furan-2-yl)-oxoethyl)-octahydropyrrolo[1,2-a]pyrazine-1,4-dione, and seven known compounds were isolated from the ethyl acetate extract of liquid fermentation broth of Armillaria mellea. The structures of the isolated compounds were established from NMR and HR-MS data. The absolute configuration of the new compound was established by comparing the experimental electronic circular dichroism (ECD) spectrum with the calculated ECD data.

Acknowledgments

This work was financially supported by National Natural Science Foundation of China (Grant Nos 30873409, 30670220, 31070318), National Key Technologies R&D Program of China (Grant No. 2007BA138B06), the Cultivation Fund of the Scientific and Technical Innovation Project of Northeast Normal University (Grant No. NENU-STB07008), the Research Foundation of Jilin Provincial Science & Technology Development (Grant No. 20102203), and the Fundamental Research Funds for the Central Universities. The theoretical calculation using Gaussian 09 was carried out at School of Chemistry, Northeast Normal University, Changchun, Jilin, China.

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