O. Cherkaoui et al., TOTAL SYNTHESIS OF MATURINONE THROUGH A REGIOSELECTIVE DIELS-ALDER REACTION OF 5-BROMINATED BENZOFURANDIONE, Chemical and Pharmaceutical Bulletin, 45(3), 1997, pp. 457-458
Maturinone was efficiently prepared by means of a regiocontrolled Diel
s-Alder reaction between o-2-ethoxycarbonyl-3-methylbenzo[b]furan-4,7-
dione 8 and penta-1,3-diene.