Chromogenic Meroterpenoids from the MushroomsRussula ochroleuca andR. viscida
作者:Bernd Sontag、Matthias Rüth、Peter Spiteller、Norbert Arnold、Wolfgang Steglich、Matthias Reichert、Gerhard Bringmann
DOI:10.1002/ejoc.200500714
日期:2006.2
The spirodioxolactone ochroleucin A1 (1) is responsible for the red colour produced when the stalk base of Russula ochroleuca and R. viscida is treated with aqueous KOH. The labile chromogen rearranges easily into the isomeric dilactoneochroleucin A2 (2). Ochroleucin A1 is accompanied by the biosynthetically related hemiacetal ochroleucin B (5). The new compounds, whose structures were established
用 KOH 水溶液处理红花红菇和红花红菇的茎基部时,会产生红色,这是由螺二酸内酯 ochroeucin A1 (1) 引起的。不稳定的色原很容易重排成异构的双内酯红素 A2 (2)。Ochroleucin A1 伴随着生物合成相关的半缩醛 ochroeucin B (5)。通过 MS 和 NMR 方法确定结构的新化合物似乎是通过两个单体单元的氧化缩合生物合成衍生的。其中之一,2,5-二羟基-4-(3-甲基丁-3-烯-1-炔基)苯甲醛 (6),通过 GC/MS 与合成样品的比较在粗毒菌提取物中检测到。黄绿素 A1 和 B 的绝对构型已通过其 CD 光谱的量子化学计算确定。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim,