Menthol mediated optical resolution of 10-oxatricyclodecadienones. Application in the enantioselective synthesis of cyclopentenoids

Article abstract of DOI:10.1016/S0040-4020(01)86766-1

The efficient conversion of 5-ethoxy-4-p-tolylsulphonylmhetyl-exo-10-oxatricyclo[5.2.1.0 ^2,6]deca-4,8-dien-3-one 6 into a diastereomeric mixture of the (-)menthyl ethers, 9a and 9b, is described. Separation of these ethers, followed by reductio