Appeal No. 2001-0971 Page 7
Application No. 08/256,736
in which Ar and R1 are defined as above and R2 represents a protecting group
for the hydroxyl function, followed by replacement, by hydrogen atoms, of the
protecting groups G1,G2 and R2 of the product obtained, and wherein the
esterification is carried out at a temperature ranging from –10 to less than 60 WC.
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