RETRACTED: Biomimetic approach to Galbulimina type I alkaloids

This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy).This article has been retracted at the request of the Authors.It was found that: a) spectra of the linear precursor, compound 23, differed when its synthesis was repeated; and b) NMR spectral data reported for several compounds resulting from compound 23 (compounds 3, 4, and 27) were taken from other sources:Compounds 3 and 27: S. Chackalamannil, R. J. Davies, T. Asberom, D. Doller and D. Leone, J. Am. Chem. Soc., 1996, 118, 9812-9813, http://dx.doi.org/10.1021/ja962542f; S. Chackalamannil, R. J. Davies, Y. Wang, T. Asberom, D. Doller, J. Wong, D. Leone and A. T. McPhail, J. Org. Chem., 1999, 64, 1932-1940, http://dx.doi.org/10.1021/jo981983.Compound 4: S. Chackalamannil, R. Davies and A. T. McPhail, Org. Lett., 2001, 3, 1427-1429, http://dx.doi.org/10.1021/ol010038w.The authors would like to apologize for this administrative error on their part.