Synthesis of yuehchukene and some analogues a general approach

Article abstract of DOI:10.1016/S0040-4020(01)88135-7

Yuehchukene and a number of structural analogues have been synthesized by intramolecular ring closure of α,β-unsaturated 2-acylindoles in the key step. Reduction of the resulting cyclopent[b]indol-3-one derivatives, followed by acid-catalyzed incorporatio