FIELD: antibiotics. SUBSTANCE: invention describes the novel compounds that are secomacrolides of erythromycin A class of the general formula (I) where values R1,R2,R3, Z, W, X, Y are given in point 1 of the invention claim. They are potential intermediate compounds used for synthesis of the novel macrolide-antibiotics. Invention describes method of their synthesis also. EFFECT: new compounds indicated above, improved method of synthesis. 21 cl, 13 ex
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