作者:Thomas Kreuzer、Peter Metz
DOI:10.1002/ejoc.200700904
日期:2008.1
As part of a project directed toward the total synthesis of the tetracyclic diterpene 3α-hydroxy-15-rippertene, a constituent of the defense secretion of higher termites, a fast access to two advanced hydroazulene key intermediates has been achieved by starting from (–)-isopulegol. A regio- and diastereoselective formal hydromethallylation and a regioselective ring expansion served as the key steps
作为全合成四环二萜 3α-羟基-15-rippertene(高等白蚁防御分泌物的一种成分)项目的一部分,通过从 (-) -异胡薄荷醇。区域选择性和非对映选择性的氢甲基化和区域选择性的环扩展是形成七元环的关键步骤。然后通过有机铜酸盐的非对映选择性共轭加成和随后的分子内醛醇缩合,通过环戊烯环化完成双环标题化合物。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)