Asymmetric syntheses of pheromones for Bactrocera nigrotibialis, Andrena wilkella, and Andrena haemorrhoa F from a chiral nitro alcohol
作者:Takashi Kitayama
DOI:10.1016/0040-4020(96)00244-x
日期:1996.4
1-nitro-2-propanol (1), in natural products syntheses was examined. Optically pure (+)−1 was readily, prepared by the lipase-catalyzed stereoselective transesterification of (±)−1. The following Michael addition of TBDMS ether of (+)-1 to methyl vinyl ether or acrylonitrile afforded important synthetic intermediates, 3a and b. As a result, optically pure sex pheromones for Bactrocera nigrotibialis
考察了最小的手性硝基醇1-硝基-2-丙醇(1)在天然产物合成中的用途。旋光纯的(+) - 1为容易,制备(±)脂肪酶催化的酯交换反应的立体选择性- 1。随后将(+)- 1的TBDMS醚加到甲基乙烯基醚或丙烯腈中,得到重要的合成中间体3a和b。结果,从3a开始在短时间内合成了用于黑果双歧杆菌,Andrena wilkella和Andrena haemorrhoa F的光学纯的性信息素。