The enantiomers of 21-methyl-7-hentriacontanone (1), which might show weak bioactivity as the female sex pheromone of the screwworm fly (Cochliomyia hominivorax), were synthesized by starting from the enantiomers of citronellal. (±)-Citronellol was converted to a racemic and diastereomeric mixture of 5-acetoxy-19-methylnonacosane (2), which was considered to be a candidate for the female sex pheromone of C. hominivorax. Synthetic 2 exhibited no pheromone activity against male C. hominivorax.
以
香茅醛的对映体为起点,合成了 21-甲基-7-hentriacontanone(1)的对映体,该对映体作为螺蝇(Cochliomyia hominivorax)的雌性信息素可能显示出微弱的
生物活性。(±)-
香茅醛被转化为 5-乙酰氧基-19-甲基
壬烷(2)的外消旋非对映异构体混合物,被认为是 C. hominivorax 雌性信息素的候选物质。合成物 2 对雄性 C. hominivorax 没有信息素活性。