FIELD: chemistry.
SUBSTANCE: invention describes a novel compound of general formula 
(1), where radicals R1, R2, X1, Y and A are as described in claim 1 of the invention. The invention also describes a method of obtaining compounds of formula (1), as well as a pharmaceutical composition based on said compounds, for treating fibrosis.
EFFECT: novel compounds with excellent collagen formation suppression, cause fewer side-effects and which are safer are obtained.
62 cl, 2717 ex, 432 tbl
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