starting from (−)-sclareol, with high stereoselectivity and an overall yield of 6.1%. The intermediate 16-deacetoxy-12-epi-scalarafuran could be easily transformed into a series of natural scalarane sesterterpenoids in a few steps.
Concise stereoselective synthesis of marine sesterterpene, 16-deacetoxy-12-epi-scalarafuran acetate and its 14-epimer via intramolecular Diels–Alder addition
作者:Zheng-Lin Wang、Zi-Gang Zhang、Hong-Chang Li、Wei-Ping Deng
DOI:10.1016/j.tet.2011.06.072
日期:2011.9
The stereoselective synthesis of C12 oxygenated marine scalaranic sesterterpene 16-deacetoxy-12-epi-scalarafuran acetate and its 14-epimer were described. A highly stereoselective intramolecularDiels–Alderaddition was designed as the key step to construct the ring D, and the absolute configurations of natural 16-deacetoxy-12-epi-scalarafuran acetate was supported by the X-ray diffraction analysis