Synthesis of Mono- and Sesquiterpenoids; XXIV: (-)-Homogynolide A, an Insect Antifeedant Isolated from Homogyne alpina
作者:Kenji Mori、Yoshitaka Matsushima
DOI:10.1055/s-1995-4004
日期:1995.7
(-)-Homogynolide A (1), an insect antifeedant isolated from Homogyne alpina (Compositae), was synthesized from (1R,4S,6S)-6-hydroxy-1-methylbicyclo[2.2.2]octan-2-one (7), which was readily prepared by the yeast reduction of the corresponding prochiral β-diketone. The key step was the oxy-Cope rearrangement of 6 to give 5.
(-)-Homogynolide A (1),一种从合叶子(菊科)中分离得到的拒食剂,以(1R,4S,6S)-6-羟基-1-甲基双环[2.2.2]辛烷-2-酮 (7)作为起始原料进行合成。该起始原料可通过相应的非手性β-二酮在酵母作用下还原得到。关键步骤为6的氧代-科普重排反应,生成5。