... J. Heterocyclic Chem., 38, 153 (2001). Introduction. ... REFERENCES AND NOTES [1] RJ Lewis, OMP Singh, CV Smith, T. Skarzynski, A. Maxwell, AJ Wonacott and DB Wingley, The Embo Journal, 15, 1412 (1996). ... Soc., 89, 5012 (1967). [33] K. Barlos, D. Gatos, J. Kallitsis, G ...