From (R)-(+)-pulegone to (2S,4R,6R,8S)-2,4,8-trimethyl-1,7-dioxaspiro[5.5]undecane - A unique spiroacetal from the insect kingdom

Article abstract of DOI:10.1016/0957-4166(95)00023-I

Enantioselective syntheses of the unique, insect-derived spiroacetal, (2S,4R,6R,8S)-2,4,8-trimethyl-1,7-dioxaspiro[5.5]undecane and some diastereomers, utilising (R)-(+)-pulegone as chiral source-material, and asymmetric dihydroxylation as a key step, are described.