Enantioselective synthesis of (R)- and (S)-2-methyl-4-octanol, the male-produced aggregation pheromone of Curculionidae species
作者:Patricia T. Baraldi、Paulo H.G. Zarbin、Paulo C. Vieira、Arlene G. Corrêa
DOI:10.1016/s0957-4166(02)00156-8
日期:2002.4
This work describes an enantioselective synthesis of (R)- and (S)-2-methyl-4-octanol, a compound that has been identified as the aggregation pheromone of some sugarcane weevils. (S)-2-Methyl-4-octanol was efficiently prepared in five steps and 20% overall yield, and its (R)-enantiomer, in six steps and 14% overall yield, both from commercial isovaleryl chloride. The key step of our synthetic route
这项工作描述了(R)-和(S)-2-甲基-4-辛醇的对映选择性合成,该化合物已被鉴定为某些甘蔗象鼻虫的聚集信息素。(S)-2-甲基-4-辛醇(5)可有效地从商业异戊酰氯分五个步骤有效地制备,其总产率为20%,其(R)-对映异构体可以六个步骤且总产率为14%。我们合成路线的关键步骤是用酿酒酵母将5-甲基-3-氧代己酸乙酯不对称还原成相应的(S)醇,收率高,对映体过量高。