Novel Approach to the Lundurine Alkaloids: Synthesis of the

ORGANIC LETTERS 2012 Vol. 14, No. 17 4701–4701

Additions and Corrections Volume 13, 2011

Suvi T. M. Orr, Jianhua Tian, Meike Niggemann, and Stephen F. Martin* Novel Approach to the Lundurine Alkaloids: Synthesis of the Tetracyclic Core Page 5104. The authors retract this Organic Letters communication on the basis that the RCM of 24 to give 25 (Scheme 6) is not reproducible; thus, the reduction of 25 to give 26 (Scheme 7) is also not reproducible. 10.1021/ol302236g Published on Web 08/24/2012