Oxidative Decarboxylation as a Route to Ketene Acetals: Assignment of Relative and Absolute Stereochemistry to the Fungal Metabolite Benesudon by Total Synthesis
作者:Derrick L. J. Clive、Minaruzzaman
DOI:10.1021/ol702509a
日期:2007.12.1
The unusual ketene acetal benesudon, which is a bioactive fungal metabolite, was synthesized from d-glucose by a route involving radical cyclization to form the five-membered ring and oxidative decarboxylation to generate the key central double bond. The originally suggested stereochemistry for the quaternary center C(5) must be revised, as both possibilities were prepared and a comparison with an
The Naturally Occurring Ketene Acetal Benesudon: Total Synthesis and Assignment of Relative and Absolute Stereochemistry
作者:Derrick L. J. Clive、Minaruzzaman、Haikang Yang
DOI:10.1021/jo801028y
日期:2008.9.1
the five-membered ring, and oxidative decarboxylation to generate the key central double bond. The originally suggested stereochemistry for the quaternary center C(5) must be revised, as both C(5) epimers were prepared and a comparison with an authentic sample was made. The absolute configuration of benesudon is 4S,5R,6S.