Enantioselective Alkoxycyclization of 1,6‐Enynes with Gold(I)‐Cavitands: Total Synthesis of Mafaicheenamine C
作者:Inmaculada Martín‐Torres、Gala Ogalla、Jin‐Ming Yang、Antonia Rinaldi、Antonio M. Echavarren
DOI:10.1002/anie.202017035
日期:2021.4.19
cyclization has been applied for the first total synthesis of carbazole alkaloid (+)‐mafaicheenamine C and its enantiomer, establishing its configuration as R. The cavity effect was also evaluated in the cycloisomerization of dienynes. A combination of experiments and theoretical studies demonstrates that the cavity of the gold(I) complexes forces the enynes to adopt constrained conformations, which results
手性金 (I)-空穴配合物已被开发用于 1,6-烯炔的对映选择性烷氧基环化。这种对映选择性环化已应用于咔唑生物碱(+)-mafaicheenamine C及其对映体的首次全合成,确定其构型为R。在二炔的环异构化中也评估了空腔效应。实验和理论研究相结合表明,金(I)配合物的空腔迫使烯炔采用受约束的构象,从而导致观察到的高区域选择性和立体选择性。