Appeal No. 2001-0971 Page 6
Application No. 08/256,736
Appendix
1. Method for preparing a taxane derivative of the formula:
in which Ar represents an aryl radical, R represents a hydrogen atom or the
acetyl radical and R1 represents a benzoyl or tert-butoxycarbonyl radical,
comprising esterification of a derivative of baccatine III or of 10-deacetyl
baccatine III of the formula:
in which G1 represents a protecting group for the hydroxyl function and G2
represents the acetyl radical or a protecting group for the hydroxyl function, using
an acid of the formula:
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