Bridgehead Oxiranyl Sesquiterpenoids. Asymmetric Total Synthesis of (−)-Salsolene Oxide
作者:Leo A. Paquette、Li-Qiang Sun、Timothy J. N. Watson、Dirk Friedrich、Brett T. Freeman
DOI:10.1021/ja964221+
日期:1997.3.1
Utilization of the Phenylthio Substituent as a Multipurpose Synthetic Tool. Direct Application to the Enantioselective Construction of (−)-Salsolene Oxide
作者:Leo A. Paquette、Li-Qiang Sun、Timothy J. N. Watson、Dirk Friedrich、Brett T. Freeman
DOI:10.1021/jo971244d
日期:1997.11.1
Vinyllithium addition to this intermediate proceeds in that stereocontrolled fashion which enables oxy-Coperearrangement to operate readily under conditions of kinetic control. After hydride reduction, the desulfurization of 16 proceeds with inversion of bridgeheadolefin geometry to deliver 17. This access route to the thermodynamically more stable geometric arrangement permits direct entry to 1. Attention