作者:Mark F. Jacobs、Bill D. Suthers、Achim Hübener、William Kitching                                    
                                    
                                        DOI:10.1039/p19950000901
                                    
                                    
                                        日期:——
                                    
                                    Synthetic approaches to ring- and side-chain hydroxy derivatives of the 2-ethyl-8-methyl-1,7-dioxaspiro-[5.5]undecane system 8 are described. Alkylation reactions of diethyl 3-oxopentanedioate, pentane-2,4-dione and acetone N,N-dimethylhydrazone have been employed. Appropriate choices of enantiomeric iodides in the alkylation sequences, sometimes followed by asymmetric dihydroxylation of derived hydroxyenones, have permitted access to key enantiomers of these alcohols, which have been fully characterised by H-1 and C-13 NMR spectroscopy, gas chromatographic-mass spectrometric methods, and chiral gas chromatography.