A Hetero-Diels−Alder Approach to Complex Pyrones: An Improved Synthesis of the Spongistatin AB Spiroketal
作者:Michael T. Crimmins、Aaron C. Smith
DOI:10.1021/ol0601601
日期:2006.3.2
a pyrone was used in an improved synthesis of the AB spiroketal subunit of the spongistatins. This transformation occurred via a hetero-Diels-Alder reaction of an acyl ketene with butyl vinyl ether. A double diastereoselective Mukaiyama aldol reaction is used to provide the hetero-Diels-Alder precursor.
取代的二恶英酮向吡喃酮的转化用于海绵体抑制素的AB螺环亚基的改进合成中。该转变通过酰基乙烯酮与丁基乙烯基醚的杂Diels-Alder反应发生。双非对映选择性的Mukaiyama aldol反应用于提供杂Diels-Alder前体。