FIELD: organic chemistry, carbohydrate derivatives. SUBSTANCE: invention relates to 3-deoxy-derivatives of D-mannoseamine of the formula given in description where R means NH2, C2-C5-alkanoyl-NH-group; each of R1 and R2 means independently C1-C4-alkyl; or R1 means hydrogen, halogen, C1-C4-alkyl or C1-C4-alkoxy-group and R2 - hydrogen; or both R1 and R2 are fluorine; if R1 means methoxy-group and R2 means hydrogen then R is distinct from NH2, or their pharmaceutically acceptable salts that can be used in medicine, in part, in oncology. EFFECT: improved method of synthesis. 7 cl, 1 tbl
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