The transannular Diels–Alder strategy has been applied to three 13-membered macrocyclic trienes whose characteristics are: a cis-trans diene and a cis methoxymethyl enol ether as the diénophile. The successful trials led to three 6.6.5 tricyles having a trans-syn-cis geometry exactly as in the B.C.D. rings of the 14β-hydroxysteroids. Key words: transannular, Diels–Alder, 14β-hydroxysteroids, 13-membered rings.