FIELD: medicine. SUBSTANCE: desired product has formula 1 where if X= CH group then R1=R2=CH3, R3=C6H5 (1a); R1=R2=H, R3=C6H5 (1b); R1=R2=H, R3=C6H5 (1c); R1=H, R2=R3=C6H5 (1e). If X-CONH2 group then R1=R2=CH3, R3=C6H5 (1f); R1=R2=H, R3=C6H5 (1g). EFFECT: improves desired product quality. 1 tbl, 1 dwg
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