compound and process for the preparation of a taxane derivative. the present invention relates to an improved process for the synthesis of 13- (n-boc-beta-isobutylserinyl-14-beta-hydroxybaccatin) 1,14-carbonate iii (i), wherein the carbonation of the groups 1,14 -Hydroxy of the baccatin skeleton is executed with bis carbonate (trichloromethyl) and the 7-hydroxy group is protected with a trichloroacetyl group.
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