syn-dimethanotetrahydroanthracene, -tetracene, and -pentacene derivatives 8a–d, 9a–d, and syn-25 are described. Highly stereoselective, pressure-inducedDiels-Alderreactions of the bis-dienophiles 8a and/or 9a with the bis-diene 7 lead to the stericallyrigidmacrocycles 1a, 2a, and 3a/3b, which have well defined cavities of different sizes.