FIELD: chemistry.
SUBSTANCE: invention relates to a method of obtaining (S)-2-methoxy-3-{4[2-(5-methyl-2-phenyloxazol-4-yl)ethoxy]benzo[b]thiophen-7-yl}propionic acid of formula 
(I) or its salts, in which formula 
(II) compound or its salt is hydrated in the presence of an iridium-including catalyst, in which the catalyst includes iridium and formula 
(III) compound, in which R1 stands for hydrogen, isopropyl, phenyl or benzyl and in which R2 stands for phenyl, 3,5-dimethylphenyl or 3,5-di-tert-butylphenyl. The invention also relates to the application of a complex of the catalyst, containing iridium and the formula (III) compound for obtaining the formula (I) compound.
EFFECT: obtaining the formula (I) compound with a high degree of conversion and enantiomeric purity.
6 cl, 4 tbl, 21 ex
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