Highly Efficient, Enantioselective Synthesis of (+)-Grandisol from a <i>C</i><sub>2</sub>-Symmetric Bis(α,β-butenolide)
作者:Pedro de March、Marta Figueredo、Josep Font、Javier Raya
DOI:10.1021/ol991261k
日期:2000.1.1
[reaction: see text] A new, very efficient, enantioselective synthesis of the sexual attracting insect pheromone (+)-grandisol has been developed, in which the key step is the double [2 + 2] photocycloaddition of ethylene to a bis(alpha,beta-butenolide) readily available from D-mannitol. The C2 symmetry of the substrate and the appropriate protection of the central diol unit are the crucial features