Enantioselective Total Synthesis and Determination of the Absolute Configuration of the 4,6,8,10,16,18-Hexamethyldocosane fromAntitrogus parvulus
作者:Christian Herber、Bernhard Breit
DOI:10.1002/ejoc.200700282
日期:2007.7
isolated from the cuticula of Antitrogus parvulus was determined based on the total synthesis of both diastereomers 1a and 1b in enantiomerically pure form. The synthesis demonstrates the utility of the o-DPPB-directed and copper-mediated allylic syn-substitution reaction with Grignard reagents for iterative deoxypropionate construction (o-DPPB = ortho-diphenylphosphanylbenzoyl). Additionally, the synthetic
基于对映体纯形式的非对映异构体 1a 和 1b 的全合成,确定了从小小蚂蚁的角质层中分离出的六甲基二十二烷 (1) 的绝对和相对构型。该合成证明了 o-DPPB 导向和铜介导的烯丙基合成取代反应与格氏试剂的效用,用于迭代脱氧丙酸酯构建(o-DPPB = 邻二苯基膦酰基苯甲酰基)。此外,还显示了铜催化 sp3-sp3 交叉偶联反应的合成能力,通过双重用于构建块构建和作为收敛全合成过程中的最终片段偶联步骤。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)