
%0 Journal Article
%A Gill, Melvyn 
%A Harte, Michael F. 
%A Ten, Abilio 
%T Pigments of Fungi. LIX. Synthesis of (1<emph type="2">S</emph>,3<emph type="2">S</emph>)- and (1<emph type="2">R</emph>,3<emph type="2">R</emph>)-Austrocortilutein and (1<emph type="2">S</emph>,3<emph type="2">S</emph>)-Austrocortirubin from Citramalic Acid
%J Australian Journal of Chemistry
%D 2000/07/21
%V 53
%N 4
%P 245-256
%K Diels&#8211;Alder cycloaddition; functionalized butadiene; quinone.
%R https://doi.org/10.1071/CH99091
%U https://www.publish.csiro.au/paper/CH99091 
%X The naturally occurring tetrahydroanthraquinone (1S,3S)-austrocortilutein (1) is synthesized for the first time in enantiomerically pure form by Diels&#8211;Alder cycloaddition between the functionalized butadiene derivative (8) and the chiral 1,3-dihydroxy-1,2,3,4-tetrahydro-5,8-naphthoquinone (9), the latter being derived from (R)-citramalic acid (3). The natural products (1S,3S)-austrocortirubin (2) and (1R,3R)-austrocortilutein (5) were also prepared for the first time by using the same strategy. 
