Towards the total synthesis of Calyculin C: preparation of the C13–C25 spirocyclic core
作者:Damien Habrant、Alan J.W. Stewart、Ari M.P. Koskinen
DOI:10.1016/j.tet.2009.07.070
日期:2009.9
A stereoselective synthesis of the C13–C25 of Calyculin C is described. Key steps involve the coupling of a terminal acetylene with a thiol ester and subsequent spirocyclisation using a double intramolecular hetero-Michael addition.