Total synthesis of (−)-funebrine via Au-catalyzed regio- and stereoselective γ-butyrolactonization of allenylsilane
作者:Takuya Okada、Kazuhiko Sakaguchi、Tetsuro Shinada、Yasufumi Ohfune
DOI:10.1016/j.tetlet.2011.08.050
日期:2011.11
The stereoselective total synthesis of (−)-funebrine from 2-butyn-1-ol was described. The crucial steps in the synthesis involved the stereoselective enolate Claisen rearrangement of the (S)-α-acyloxy-α-alkynylsilane 8, the Au-catalyzed regio- and stereoselective lactonization of the allenylsilane 7, and the Paal–Knorr pyrrole condensation using an unsymmetrical 1,4-diketone 4b.
描述了由2-丁炔-1-醇立体选择性全合成(-)-氟苯胺。合成中的关键步骤涉及(S)-α-酰氧基-α-炔基硅烷8的立体选择性烯酸酯克莱森重排,烯丙基硅烷7的Au催化区域和立体选择性内酯化,以及使用Paal-Knorr吡咯缩合的方法不对称的1,4-二酮4b。