An efficient synthesis of the carbocyclic core of zoanthenol
作者:Jennifer L. Stockdill、Douglas C. Behenna、Andrew McClory、Brian M. Stoltz
DOI:10.1016/j.tet.2009.05.023
日期:2009.8
strategy for the synthesis of the carbocyclic portion of zoanthenol is disclosed. The key step involves a 6-endo radical-mediated conjugate addition that constructs the quaternary stereocenter at C(12) and closes the B ring in a stereoselective manner. The synthesis of the C-ring fragment uses an enantioselective desymmetrization to simultaneously establish the absolute stereochemistry of two vicinal