Total Synthesis of Echinopines A and B: Exploiting a Bioinspired Late

ORGANIC LETTERS 2012 Vol. 14, No. 19 5165–5165

Additions and Corrections Volume 13, 2011

Philippe A. Peixoto, Jean-Alexandre Richard, Rene Severin, and David Y.-K. Chen* Total Synthesis of Echinopines A and B: Exploiting a Bioinspired Late-Stage Intramolecular Cyclopropanation Page 5724. The following citations should be added to ref 1, concerning the pioneering studies of enyne cycloisomerization and the subsequent Diels Alder reaction. For pioneering studies in palladium-mediated enyne cycloisomerization followed by a Diels Alder reaction, see: (b) Trost, B. M.; Chung, J. Y. L. J. Am. Chem. Soc. 1985, 107, 4586 4588. (c) Trost, B. M.; Tanoury, G. J.; Lautens, M.; Chan, C.; MacPherson, D. T. J. Am. Chem. Soc. 1989, 116, 4255 4267. (d) Trost, B. M.; Hipskind, P. A.; Chung, J. Y. L.; Chan, C. Angew. Chem., Int. Ed. 1989, 28, 1502 1504. 10.1021/ol302436m Published on Web 09/13/2012