Total Synthesis and Absolute Stereochemistry of Integric Acid
作者:Dennis C. J. Waalboer、Henri A. van Kalkeren、Mark C. Schaapman、Floris L. van Delft、Floris P. J. T. Rutjes
DOI:10.1021/jo901845r
日期:2009.11.20
An efficient total synthesis of integric acid is described starting from the Wieland−Miescher ketone. Key steps involve a one-step orthogonal deprotection/protection strategy of a thioacetal/aldehyde and the selective oxidative cleavage of a prenyl group in the presence of two other unsaturated moieties. The synthesis of both C4′ diastereoisomers of integric acid delivered unambiguous evidence for