The preparation of 2(1H)-pyridinones and 2,3-dihydro-5(1H)-indolizinones via transition metal mediated cocyclization of alkynes and isocyanates. A novel construction of the antitumor agent camptothecin
The preparation of 2(1H)-pyridinones and 2,3-dihydro-5(1H)-indolizinones via transition metal mediated cocyclization of alkynes and isocyanates. A novel construction of the antitumor agent camptothecin
Cobalt-catalyzed cocyclizations of isocyanato alkynes: a regiocontrolled entry into 5-indolizinones. Application to the total synthesis of camptothecin
作者:Richard A. Earl、K. Peter C. Vollhardt
DOI:10.1021/ja00361a057
日期:1983.11
The preparation of 2(1H)-pyridinones and 2,3-dihydro-5(1H)-indolizinones via transition metal mediated cocyclization of alkynes and isocyanates. A novel construction of the antitumor agent camptothecin