First stereoselective synthesis of (4aS,5R)-4,4a,5,6,7,8-hexahydro-4a,5-dimethyl-2(3H)-naphthalenone

Total Synthesis of Epoxyeujindole A

The total synthesis of epoxyeujindole A, a structurally unusual indole diterpenoid isolated from Eupenicillium javanicum, has been accomplished for the first time. The synthesis features a late-stage cationic cyclization strategy, which took advantage of an electron-rich olefinic substrate. The CDE ring system was assembled via an enantioselective conjugate addition/alkylation, a Luche cyclization, and a Nozaki-Hiyama-Kishi reaction. The heavily substituted A ring was constructed through a Suzuki-Miyaura coupling and a cationic cyclization, and the bridged fused B ring was formed through a Prins reaction.