Total Synthesis and Preliminary Biological Evaluation of <i>cis</i>-Solamin Isomers
作者:Alex R. L. Cecil、Yulai Hu、María J. Vicent、Ruth Duncan、Richard C. D. Brown
DOI:10.1021/jo049909g
日期:2004.5.1
An efficient total synthesis of cis-solamin (1) has been achieved in 21% overall yield and with a longest linear sequence of just 11 steps from aldehyde 8. A key feature of the approach was the use of asymmetric permanganate-promoted oxidative cyclization to introduce four of the five required stereocenters in a single step. The use of robust and chemoselective methodology meant that the use of protecting
高效的顺式索拉明(1)的总合成已实现21%的总收率和最长的线性序列,距离醛8仅11个步骤。该方法的主要特点是使用不对称高锰酸盐促进的氧化环化反应,可在一个步骤中引入五个所需的立体中心中的四个。中使用耐用和化学选择性的方法指的是使用保护基团的可能的组装时,能够避免顺-solamin(1)从所述三个片段23,6,和4。该方法还适用于三种其他顺式-solamin异构体的合成2,ent - 1和ent - 2。据报道,顺式索拉明异构体和合成中间体具有细胞毒性和溶血特性。