FIELD: organic chemistry and technology. SUBSTANCE: invention relates to new compounds of the general formula (I) 
where values R1-R7, A, Z, Y and X are given in p. 1 of the invention claim. Compounds show the strong antitumor activity. Invention describes the method of their synthesis also. EFFECT: improved method of synthesis, antitumor properties. 3 cl, 4 tbl, 235 ex
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