FIELD: organic chemistry. SUBSTANCE: derivatives of compound "WS7622A" of the general formula RO-RO-C47H61N9O11-OR-OR where R - methyl or acetyl; JC50 = 0.0103 mcg/ml. Reagent 1: "WS7622A". Reagent 2: trimethylsilyldiazomethane. Reaction conditions: in the mixture of chloroform and methanol. Synthesized compound is an inhibitor of human leucocyte elastase. EFFECT: improved method of synthesis. 1 tbl
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