New Monomeric Stilbenoids from Peanut (Arachis hypogaea) Seeds Challenged by an Aspergillus flavus Strain

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• 作者：Victor S. Sobolev ; Nicole M. Krausert ; James B. Gloer
• 刊名：Journal of Agricultural and Food Chemistry
• 出版年：2016
• 出版时间：January 27, 2016
• 年：2016
• 卷：64
• 期：3
• 页码：579-584
• 全文大小：292K
• ISSN：1520-5118

文摘

Two new stilbene derivatives have been isolated from peanut seeds challenged by an Aspergillus flavus strain, along with chiricanine B, which has not been previously reported from peanuts, as well as a stilbenoid reported previously only as a synthetic product. The structures of these new putative phytoalexins were determined by analysis of ¹H and ¹³C NMR, HRESIMS, MSⁿ, and UV data. The new stilbenoids were named arahypin-13 (21), arahypin-14 (22), and arahypin-15 (23). Together with other known bioactive peanut stilbenoids that were also produced in the challenged seeds, these new compounds may play a defensive role against invasive fungi.