Total Synthesis of Lemaireocereine.
作者:Hisashi ISHII、Tsutomu ISHIKAWA、Shuji OHTA、Masahiro SUZUKI、Takashi HARAYAMA
DOI:10.1248/cpb.40.1993
日期:——
By utilizing newly developed synthetic methods i.e. 2-methylbenzofuran formation by CsF-mediated Claisen rearrangement of an aryl propargyl ether and its transformation to a salicylaldehyde by oxidative cleavage of the furan ring, total synthesis of a coctus alkaloid, lemaireocereine (2), was accomplished via ten steps from the aldehyde (4) in 22% yield.
利用新开发的合成方法,即通过 CsF 介导的芳基丙炔醚克莱森重排形成 2-甲基苯并呋喃,并通过呋喃环的氧化裂解将其转化为水杨醛,通过十个步骤从醛 (4) 完全合成了一种牛肝菌生物碱--来甲瑞林 (2),收率为 22%。