Simple and Efficient Synthesis of (+)-Methyl 7-Benzoylpederate, a Key Intermediate toward the Mycalamides
作者:Nicholas S. Trotter、Shunya Takahashi、Tadashi Nakata
DOI:10.1021/ol990936g
日期:1999.9.1
[GRAPHICS]A simple and efficient method for the synthesis of (+)-methyl 7-benzoylpederate, the left half of pederin, mycalamides, onnamides, and theopederins, was developed, The key reactions include the Evans asymmetric aldol reaction, a thioacetalization-lactonization, a stereoselective Claisen condensation, and a Takai-Nozaki olefination, The synthesis requires only nine steps and proceeds in 26% overall yield.