Coloured Artefacts Formed by Oxidation of Benzene-1,2,4-triol and β-Dopa During the Extraction of Cortinarius violaceus (Agaricales) with Alcohols
作者:Franz von Nussbaum、Matthias Rüth、Peter Spiteller、Tina Hübscher-Weissert、Florian Löbermann、Kurt Polborn、Wolfgang Steglich
DOI:10.1002/ejoc.201101215
日期:2012.1
An array of coloured artefacts was formed upon extraction of the mushroom Cortinarius violaceus with methanol. The structures of these pigments were determined by spectroscopic investigations, including NMR and mass spectrometric analyses. Cortiviolate A and dihydrocortiviol A arise by oxidative dimerization of benzene-1,2,4-triol, and cortiviolate B is formed by an unprecedented oxidative rearrangement
用甲醇提取蘑菇 Cortinarius violaceus 后形成了一系列有色人工制品。这些颜料的结构是通过光谱研究确定的,包括核磁共振和质谱分析。Cortiviolate A 和 dihydrocortiviol A 由苯-1,2,4-triol 的氧化二聚作用产生,cortiviolate B 由 β-多巴前所未有的氧化重排形成。氧化作用是由铁 (III) 离子引起的,从 (R)-β-多巴(蘑菇的天然紫色色素)的铁络合物中释放出来。在这些研究过程中,进行了皮质类固醇、二氢皮质类固醇 A、gomphilactone 和两种相关双内酯的合成。