Progress towards the total synthesis of 2,3-dihydroxytrinervitanes

Intramolecular Diels–Alder approach to construct the fused AB ring of trinervitane has been demonstrated efficiently. The key intermediate for the Diels–Alder cyclization has been achieved following highly stereoselective Julia–Kocienski olefination, Sharpless epoxidation and Evan’s asymmetric alkylation as the key reactions.