Synthesis and absolute configuration of the male aggregation pheromone of the stink bug Erysarcoris lewisi (Distant), (2Z,6R,1′S,5′S)-2-methyl-6-(4′-methylenebicyclo[3.1.0]hexyl)hept-2-en-1-ol
作者:Takuya Tashiro、Kenji Mori
DOI:10.1016/j.tetasy.2008.04.029
日期:2008.5
(6R,1′S,5′R)- and (6R,1′R,5′S)-2, which were prepared by lipase-catalyzed asymmetric acetylation of a mixture of (6R,1′S,4′S,5′R)- and (6R,1′R,4′R,5′S)-7′-norsesquisabinen-4′-ol 3. The absolute configuration of ketone 2 was assigned by its CD comparison with (1R,5S)-sabina ketone 4. An alternative synthesis of (2Z,6R,1′S,5′S)-1 was achieved without recourse to enzyme by employing Hodgson’s diastereoselective
确定包括臭虫Erysarcoris lewisi(Distant)雄性产生的聚集信息素的绝对构型的结构为(2 Z,6 R,1 'S,5 'S)-2-甲基-6-(4 '-亚甲基双环[3.1.0]己基)庚-2-烯-1-醇1的生物测定及天然信息素的1 H NMR谱与(2 Z,6 R,1 'S,5'小号) -和(2 ž,6 - [R,1' - [R,5' - [R )-异构体。这两个非对映异构体是由相应的酮合成的(6R,1 'S,5'R)-和(6 R,1'R,5 'S)-2通过脂肪酶催化(6 R,1 'S,4'的混合物的不对称乙酰化反应)制得小号,5' - [R) -和(6 - [R,1' - [R,4' - [R,5'小号)-7'- norsesquisabinen -4'-醇3。酮2的绝对构型通过与(1 R,5 S)-sabina酮4的CD比较来确定。(2 Z通过使用霍奇森的非对映选择性分子内