FIELD: chemistry.
SUBSTANCE: disclosed is a method of producing a compound of formula 
(I), where N equals 0, and values of substitutes R, R1 are given in claim 1, which involves: (i) esterification of a compound of formula 
(V) with an alcohol of formula 
, where m and m' are independently equal to 0 or 1; under the condition that both are not equal to 0 at the same time and values of A are given in claim 1, to obtain a compound of formula 
(III); (ii) reaction of the compound of formula (III) and a compound of formula 
(IV) to obtain a compound of formula 
(II); and (iii) reaction of the compound of formula (II) with L-CH2-C≡CH, wherein L is a leaving group, to form a compound of formula (I); intermediate compounds of formula (II), formula (III) and formula 
(XII) are also disclosed.
EFFECT: improved method.
15 cl, 19 ex, 1 dwg
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