FIELD: chemistry.
SUBSTANCE: invention relates to an improved method for synthesis of 13-(N-Boc-β-isobutylserinyl)-14β-hydroxybaccatin III-1,14-carbonate (I) 
, in which carbonylation of 1,14-hydroxy groups of the baccatin backbone is carried out using bis(trichloromethyl carbonate) and the 7-hydroxy group is protected by a trichloroacetyl group. The invention also relates to novel intermediate compounds of formula 
VII and 
VIII.
EFFECT: simple process.
3 cl, 6 ex
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