The use of t-butyl acetothioacetate as a route to bis-β-ketomacrolides
作者:Christina M. J. Fox、Steven V. Ley、Alexandra M. Z. Slawin、David J. Williams
DOI:10.1039/c39850001805
日期:——
Dianions from t-butylacetothioacetate may be alkylated at the γ-carbon atom with suitably protected iodoalkanols to afford useful precursors for dimerisation to novel bis-β-ketomacrolides in the presence of copper(I) trifluoroacetate.
Preparation of β-ketomacrolactones and β-ketodiolides using S-t-butyl 3-oxobutanethioate and S-t-butyl 4-diethylphosphono-3-oxobutanethioate
作者:Paul M. Booth、Howard B. Broughton、Mark J. Ford、Christina M.J. Fox、Steven V. Ley、Alexandra M.Z. Slawin、David J. Williams、Peter R. Woodward
DOI:10.1016/s0040-4020(01)89218-8
日期:1989.1
Ring Expansions of β-Keto Lactones with Zinc Carbenoids: Syntheses of (+)-Patulolide A and (±)-Patulolide B
作者:Matthew D. Ronsheim、Charles K. Zercher
DOI:10.1021/jo0264776
日期:2003.3.1
A one-pot ringexpansion/oxidation/elimination method has been developed in which beta-keto lactones are converted efficiently to alpha,beta-unsaturated-gamma-keto lactones. The reaction can be successfully applied to a variety of ring sizes. Alkene stereochemistry is dependent upon ring size and reaction conditions. The method was applied to the synthesis of (+)-patulolide A.