Tetrahedron Letters

Editors S. Chandrasekaran Dept. of Organic Chemistry, Indian Institute of Science, Sir C.V. Raman Avenue, 560 012 Bangalore, India, G.-Q. Lin Shanghai Inst. of Organic Chemistry, Chinese Academy of Sciences (CAS), 345 Lingling Road, 200032 Shanghai, China, K. Maruoka Dept. of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa Oiwake-cho, 606-8502 Kyoto, Japan, E.J. Thomas School of Chemistry, University of Manchester, P.O. Box 88, Sackville Street, Manchester, M60 1QD, UK, J.L. Wood Dept. of Chemistry, Colorado State University, Fort Collins, CO 80523, USA, Y. Yamamoto Dept. of Chemistry & Graduate School of Science, Tohoku University, 980-8578 Sendai, Japan, S.Z. Zard Lab. de Synthèse Organique, Ecole Polytechnique, route de Saclay, 91128 Palaiseau, France, Chairman S. Neidle University of London, London, UK, Editor Emeritus H.H. Wasserman Lexington, MA, USA, Executive Board of Editors P.R. Bernstein PharmaB LLC, Philadelphia, PA, USA, D.L. Boger The Scripps Research Institute, La Jolla, CA, USA, S.G. Davies University of Oxford, Oxford, UK, L. Ghosez Institut Européen de Chimie et de Biologie (IECB), Pessac, France, T. Hayashi Institute of Materials Research and Engineering (IMRE), Singapore, K.D. Janda The Scripps Research Institute, La Jolla, CA, USA, G.-Q. Lin Chinese Academy of Sciences (CAS), Shanghai, China, S.F. Martin The University of Texas at Austin, Austin, TX, USA, W.B. Motherwell University College London (UCL), London, UK, S. Neidle University of London, London, UK, M. Shibasaki University of Tokyo, Tokyo, Japan, B. M. Stoltz California Institute of Technology, Pasadena, CA, USA, R.J.K. Taylor University of York, York, UK, E.J. Thomas University of Manchester, Manchester, UK, K. Tomioka Doshisa Women's College of Liberal Arts, Kyoto, Japan, H. Waldmann Max Planck Institut (MPI) für Molekulare Physiologie, Dortmund, Germany, H.H. Wasserman Lexington, MA, USA, R.M. Williams Colorado State University, Fort Collins, CO, USA, C.-H. Wong The Scripps Research Institute, La Jolla, CA, USA, J.L. Wood Colorado State University, Fort Collins, CO, USA, Y. Yamamoto Tohoku University, Sendai, Japan, S.Z. Zard Ecole Polytechnique, Palaiseau, France, Editors of the Tetrahedron Organic Chemistry Series J-E. Bäckvall Stockholms Universitet, Stockholm, Sweden, Sir J.E. Baldwin FRS University of Oxford, Oxford, UK, R.M. Williams Colorado State University, Fort Collins, CO, USA, H. Waldmann Max Planck Institut (MPI) für Molekulare Physiologie, Dortmund, Germany, H.H. Wasserman Lexington, MA, USA, S. Neidle University of London, London, UK, Board of Consulting Editors A. Alexakis Université de Genève, Geneva 4, Switzerland, A.G.M. Barrett Imperial College London, London, UK, J. Bode University of Pennsylvania, Philadelphia, PA, USA, C. Bolm Rheinisch-Westfälische Technische Hochschule Aachen (RWTH), Aachen, Germany, S. Buchwald Massachusetts Institute of Technology (MIT), Cambridge, MA, USA, J-E. Bäckvall Stockholms Universitet, Stockholm, Sweden, E. Carreira , J. Cossy Centre National de la Recherche Scientifique (CNRS), Paris, France, D. Curran University of Pittsburgh, Pittsburgh, PA, USA, P.A. Evans Lancaster University, Liverpool, UK, J-M. Fang National Taiwan University, Taipei, Taiwan, ROC, G.C. Fu Massachusetts Institute of Technology (MIT), Cambridge, MA, USA, Y. Kita Osaka University, Osaka, Japan, P. Knochel Ludwig-Maximilians-Universität München (LMU), München, Germany, M. Krische University of Texas, Austin, TX, USA, E. Lee Seoul National University (SNU), Gwanag-Gu, Seoul, South Korea, S. Ley University of Cambridge, Cambridge, UK, X.-Y. Lu Chinese Academy of Sciences (CAS), Shanghai, China, D. Ma Shanghai Institute of Organic chemistry, Shanghai, China, D.W. MacMillan California Institute of Technology, Pasadena, CA, USA, G. Mehta Indian Institute of Science, Bangalore, India, S. Miller Yale University, New Haven, CT, USA, N. Miyata Nagoya City University Medical School, Nagoya, Japan, T. Mukaiyama Kitasato University, Kita-Ku, Japan, K. Narasaka Nanyang Technological University, Singapore, Singapore, K.C. Nicolaou The Scripps Research Institute, La Jolla, CA, USA, R. Noyori Nagoya University, Nagoya, Japan, L.E. Overman University of California at Irvine, Irvine, CA, USA, A. Padwa Emory University, Atlanta, GA, USA, I. Paterson University of Cambridge, Cam