Cobalt- versus Ruthenium-Catalyzed Alder–Ene Reaction for the Synthesis of Credneramide A and B
作者:Florian Erver、Gerhard Hilt
DOI:10.1021/jo3007896
日期:2012.6.1
was accomplished by utilizing Alder–ene reactions between a terminal alkene and an internal alkyne to generate the rather uncommon 1,4-diene substructure of these compounds. Moreover, two different short linear sequences toward these targets are evaluated using either a cobalt-catalyzed Alder–ene reaction of 1-chloropent-1-yne or a ruthenium-catalyzed Alder–ene reaction of 1-trimethylsilyl-1-pentyne
天然产物credneramide A和B的第一个合成是通过利用末端烯烃与内部炔烃之间的Alder-ene反应生成这些化合物中不常见的1,4-二烯亚结构而完成的。此外,使用1-氯戊-1-炔的钴催化的Alder-ene反应或1-三甲基甲硅烷基-1-戊炔与5-的钌催化的Alder-ene反应,评估了针对这些目标的两个不同的短线性序列。己烯酸衍生物的关键一步转化。此外,源自钴催化的Alder-ene反应的Alder-ene初级产物的皂化反应产生了蜡酸,这是两种天然产物的生物前体。