FIELD: organic chemistry. SUBSTANCE: invention relates to the group of novel compounds of camptothecin glycoconjugates of the general formula (I) 
where R1 means a completely stereometric nonpolar by-side chain of amino acid presented by alkyl radical having up to 4 carbon atoms; R2 is the main by-side chain of amino acid that is a radical of the formula -(CH2)n-R3 being R3 means 
or 
; n = 1-4, and also their salts, stereoisomers and mixture of stereoisomers. Invention relates to also two methods of synthesis of these compounds and a medicinal agent showing ability to inhibit the growth of tumors volume or suppress their growth. EFFECT: improved methods of synthesis, valuable antitumor properties. 7 cl, 3 tbl, 1 dwg, 10 ex
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