作者:Takeshi Ohta、Tsutomu Fukuda、Fumito Ishibashi、Masatomo Iwao
DOI:10.1021/jo901589e
日期:2009.11.6
synthetic route to rationally designed lamellarin D analogues, 1-dearyllamellarin D (1) and 1-substituted 1-dearyllamellarin D (2), has been developed. The key pentacyclic intermediate 22 was prepared by palladium-catalyzed direct arylation of 12, which in turn was synthesized via C-2-selective lithiation of 15 followed by palladium-catalyzed cross-coupling as the key reactions. Compound 22 was converted
已经开发了一种一般的合成路线,以合理设计lamellarin D类似物,1-dearyllamellarin D(1)和1-取代的1-dearyllamellarin D(2)。关键的五环中间体22是通过钯催化的12的直接芳基化制备的,该芳基化反应又是通过15的C-2-选择性锂化反应,然后通过钯催化的交叉偶联作为关键反应而合成的。通过区域选择性亲电取代和钯催化的交叉偶联反应,将化合物22转化为多种C-1-取代的类似物2。