Sha, Chin-Kang alpha-Carbonyl Radical Cyclization Approach toward Angular Triquinanes: Total Synthesis of Enantiomerically Pure (-)-5-Oxosilphiperfol-6-ene. [electronic resource] - The Journal of organic chemistry Apr 1998 - 2699-2704 p. digital Publication Type: Journal Article ISSN: 1520-6904 Standard No.: 10.1021/jo9723570 doi