Application of the Brook Rearrangement in Tandem with Single Electron Transfer Oxidative and Radical Processes
作者:Mikhail K. Klychnikov、Radek Pohl、Ivana Císařová、Ullrich Jahn
DOI:10.1002/ejoc.202000126
日期:2020.5.22
Rearrangement and radical puzzle: Chiral epoxides, silylated acetamides, and stable radical TEMPO provide, with the help of ferrocenium hexafluorophosphate, dioxygenated carbonylcompounds, which serve as versatile radical cyclization precursors.
Application of a Stereospecific Intramolecular Allenylsilane Imino Ene Reaction to Enantioselective Total Synthesis of the 5,11-Methanomorphanthridine Class of <i>Amaryllidaceae</i> Alkaloids
作者:Jian Jin、Steven M. Weinreb
DOI:10.1021/ja970839n
日期:1997.6.1
Enantioselective total syntheses of the pentacyclic 5,11-methanomorphanthridine Amaryllidaceae alkaloids (−)-montanine (1), (−)-coccinine (2), and (−)-pancracine (3) were accomplished using an intramolecular concerted pericyclic allenylsilane imino ene cycloaddition as a key step. These complex natural products were constructed starting from readily available enantiomerically pure epoxy alcohol 15
作者:Kevin J. Quinn、Livio Islamaj、Shalise M. Couvertier、Kathleen E. Shanley、Brendan L. Mackinson
DOI:10.1002/ejoc.201000875
日期:2010.11
A convergent total synthesis of the mono(tetrahydrofuran) annonaceous acetogenin murisolin, with a longest linear sequence of nine steps, is reported. Assembly of the complete carbon framework by crossmetathesis and late-stage tetrahydrofuran formation on the intact backbone are key elements of the synthesis.
An enantioselective total synthesis of Sch-725674 using dithiane alkylation, cross metathesis reaction, Yamaguchi macrolactonization and a substrate controlled stereoselective reduction as key steps is described.