Efficient synthesis of the natural enantiomer of sporogen-AO 1 (13-desoxyphomenone) A sporogenic sesquiterpene from aspergillus oryzae
作者:Takeshi Kitahara、Hitoshi Kurata、Kenji Mori
DOI:10.1016/s0040-4020(01)86136-6
日期:1988.1
An efficient total synthesis of (+)-sporogen-AO 1 (13-desoxyphomenone) 1 was achieved in 20 steps from ethyl (1R,2S)-5,5-ethylenedioxy-2-hydroxycyclohexane-carboxylate 3 in 8.3% overall yield. The optically active 3 with 98.4% e.e. was easily obtained in 74% yield by the reduction of the corresponding keto ester 4 with baker's yeast.
从(1R,2S)-5,5-亚乙基二氧基-2-羟基环己烷-羧酸酯3的20个步骤中可以有效地合成(+)-孢子素-AO 1(13-脱氧膦酮)1(总产率为8.3%)。通过用面包酵母还原相应的酮酯4,可以容易地以74%的产率获得具有98.4%ee的旋光性化合物3。