1. For pertinent reviews, see: (a) Kant, J.; Walker, D. G. In the Organic Chemistry of β-Lactams; Georg, G. I., Ed.; Wiley-VCH: New York, 1993; p. 121;
2. (b) Durckheimer, W.; Blumbach, J.; Lattrell, R.; Scheunemann, K. H. Angew. Chem., Int. Ed. Engl. 1985, 24, 180.
3. Taxol Science and Applications;Suffness,1995
4. Protective Groups in Organic Synthesis;Greene,1999
5. Protecting Groups;Kocienski,1994