Synthesis of naturally occurring diene and trienes by Te/Li exchange on (1Z,3Z)-butyltelluro-4-methoxy-1,3-butadiene
作者:Miguel J. Dabdoub、Vânia B. Dabdoub、Adriano C.M. Baroni、Gabriela R. Hurtado、Sandro L. Barbosa
DOI:10.1016/j.tetlet.2010.01.066
日期:2010.3
component of the marine brown algae Fucus serratus, Dictyopteris plagiograma, and Dictyopteris australis. Performing the Wittig reaction of methyl triphenylphosphorane with the octa-(2E,4E)-dienal 5c, the nona-(1,3E,5E)-triene 6b was synthesized. The compound obtained is a sex-pheromone component of the marine brown alga Sargassum horneri. The octa-(1,3E,5E)-triene 6c was easily obtained from hepta-(2E,4E)-dienal
通过(Z)-1-甲氧基-丁-1-en-3-ynes 1的加氢精制反应获得(1 Z,3 Z)-丁基碲-4-甲氧基-1,3-丁二烯2。所述butadienyllithium 3在由TE /锂交换反应得到(1个Ž,3 Ž)-1- butyltelluro -4-甲氧基-1,3-丁二烯2与醛反应以形成相应的醇4A - d与总留着配置。形成的醇经过水解,生成(E,E)构型,它们是从天然来源获得的三烯的前体。该反应的产物用于合成(-2 E,4 E)-癸二烯酸甲酯7,这是成熟的巴特利特梨的风味原理的组成部分。进行甲基三苯基膦与十-(2 E,4 E)-二烯基5a的Wittig反应,我们能够合成十一-(1,3 E,5 E)-三烯6a。该化合物是海洋褐藻褐藻Fucus serratus,Dictyopteris plagiograma和Dictyopteris australis的性信息素成分。。进行甲基三苯基膦烷与八-(2