6-(3-Indolyl)quinolinequinone derivatives gave regioselectiveDiels–Alderreactions with a variety of dienophiles, yielding polycyclic carbazole derivatives. One-pot reactions, proceeding through a cascade of reactions including regioselective Michael and Diels–Alder steps, gave heptacyclic derivatives starting from indoles and 2,5,8(1H)-quinolinetriones. Double Diels–Alderreactions of 6-(3-indolyl)quinolinequinones