Stereoselective Total Synthesis of Atractylodemayne A, a Conjugated 2(<i>E</i>),8(<i>Z</i>),10(<i>E</i>)-Triene-4,6-diyne
作者:Bernd Schmidt、Stephan Audörsch
DOI:10.1021/acs.orglett.6b00274
日期:2016.3.4
The first total synthesis of the polyacetylene natural product atractylodemayne A is reported. Stereoselective construction of the conjugated 8(Z),10(E)-diene moiety was achieved through a tethered ring-closing metathesis approach, comprising a Ru-catalyzed RCM followed by a base-induced elimination. A Pd-catalyzed Cadiot–Chodkiewicz coupling was used for the synthesis of the diyne. Overall, atractylodemayne
报道了聚乙炔天然产物白术去甲炔A的第一次全合成。共轭的8(Z),10(E)-二烯部分的立体选择性构建是通过束缚的闭环复分解方法实现的,该方法包括Ru催化的RCM,然后进行碱基诱导的消除。Pd催化的Cadiot–Chodkiewicz偶联用于二炔的合成。总体而言,以最长的线性序列以九个步骤合成了白术十二指肠素A。