
TY  - JOUR
A1  - Gill, Melvyn 
A1  - Harte, Michael F. 
A1  - Ten, Abilio 
T1  - 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
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 2000
VL  - 53
IS  - 4
SP  - 245
EP  - 256
KW  - Diels&#8211;Alder cycloaddition; functionalized butadiene; quinone.
UR  - https://doi.org/10.1071/CH99091 
N2  - 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. 
ER  -

