FIELD: chemistry.
SUBSTANCE: invention relates to a compound of formula (I) or a pharmaceutically acceptable salt thereof. In formula (I), R1 is selected from a group consisting of 
, 
, 
, 
, 
, 
and 
,
R2 is H, R3 is H. Invention also relates to a pharmaceutical composition exhibiting anticancer activity.
EFFECT: technical result is obtaining novel compounds of formula (I), which can be used for treating ovarian cancer, breast cancer, prostate cancer or leukaemia.
6 cl, 7 tbl, 8 ex
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