Efficient Desymmetrization of “<i>Pseudo</i>”-<i>C</i><sub>2</sub>-Symmetric Substrates: Illustration in the Synthesis of a Disubstituted Butenolide from Arabitol
作者:Bruno Linclau、A. James Boydell、Philip J. Clarke、Richard Horan、Claire Jacquet
DOI:10.1021/jo026696r
日期:2003.3.1
A short synthesis of the homochiral disubstituted butenolide 1 is described in four steps from arabitol. The key steps are the selective kinetic protection of arabitol and the cyclization of 11 to form the butenolide ring. This last transformation represents a rare example of a fully stereoselective cyclitive desymmetrization process of a "pseudo"-C-2-symmetric substrate.