Atropo-Enantioselective Total Synthesis of Knipholone and Related Antiplasmodial Phenylanthraquinones
作者:Gerhard Bringmann、Dirk Menche、Jürgen Kraus、Jörg Mühlbacher、Karl Peters、Eva-Maria Peters、Reto Brun、Merhatibeb Bezabih、Berhanu M. Abegaz
DOI:10.1021/jo020189s
日期:2002.8.1
The "lactone concept" has been efficiently employed for the first atropo-enantioselective synthesis of knipholone and related natural phenylanthraquinones. Besides the regio- and stereoselective construction of the biaryl axis, another important step was the "synthetically late" introduction of the C-acetyl group, either by a Friedel-Crafts type acetylation or by an ortho-selective Fries rearrangement
“内酯概念”已被有效地用于苯丙醚酮和相关的天然苯基蒽醌的第一次熵-对映选择性合成。除了对联芳基轴的区域和立体选择性构建之外,另一个重要步骤是通过合成的乙酰弗里德-克拉夫茨型乙酰化反应或通过首先在简化模型上测试的邻位选择性弗里斯重排“合成后期”引入C-乙酰基系统并随后应用于天然产品及其简化类似物的高度阻转选择性制备以进行生物测试。这些天然联芳基,其前体和非天然类似物的合成可用性使得人们对这些有趣的联芳基的抗血浆活性进行了更广泛的研究。