The chemistry of spiroacetals. An enantiospecific synthesis of the spiroacetal moiety of milbemycins α<sub>7</sub>and α<sub>8</sub>
作者:Raymond Baker、Christopher J. Swain、John C. Head
DOI:10.1039/c39860000874
日期:——
An enantiospecific synthesis of the dioxygenated spiroacetalmoiety of milbemycins α7 and α8 has been developed from the appropriate epoxide and regioselective acylation of the C-23 alcohol.
The chemistry of spiroacetals. Enantiospecific synthesis of the spiroacetal units of avermectins B1b and B2b
作者:Raymond Baker、Christopher J. Swain、John C. Head
DOI:10.1039/c39850000309
日期:——
An enantiospecific synthesis of the spiroacetal sub-unit of avermectins B1b and B2b from the optically pure precursors acetylene(3) and lactone (4) is reported.
A formal synthesis of (+)milbemycin β31: A Wittig approach
作者:Raymond Baker、Mary J. O'Mahony、Christopher J. Swain
DOI:10.1016/s0040-4039(00)84716-4
日期:1986.1
generate the C14–C15 trisubstituted double bond of milbemycin β3 by reaction of a Wittig reagent with the appropriate spiroacetal aldehyde. The product of this reaction, after conversion to the iodide and enantiospecific alkylation to generate the C12 methyl group, has been elaborated to an intermediate previously involved in a total synthesis of milbemycin β3.
[EN] SPIROKETAL DERIVATIVE, PREPARATION METHOD THEREFOR AND APPLICATION<br/>[FR] DÉRIVÉ DE SPIROCÉTAL, PROCÉDÉ POUR SA PRÉPARATION ET APPLICATION<br/>[ZH] 螺缩酮衍生物及其制备方法和应用