T. Martin et al., A NEW APPROACH TO FUNCTIONALIZED CYCLOBUTANES - STEREOSELECTIVE SYNTHESIS OF THE ENANTIOMERS OF GRANDISOL AND FRAGANOL, Tetrahedron : asymmetry, 6(5), 1995, pp. 1151-1164
Enantiomerically enriched (+)-grandisol and (+)-fraganol were synthesi
zed using as the key step a new stereoselective synthesis of cyclobuta
nes fused to gamma-lactones by a stereochemically-controlled intramole
cular alkylation of alpha-benzenesulfonyl-gamma-lactones. This method
provides a way to synthesize the enantiomers in a straightforward mann
er.