PYRIDINE DERIVATIVES Russian patent published in 1995 - IPC

FIELD: organic chemistry. SUBSTANCE: product: derivatives of pyridine of the formula (I) R¹ where R² and -NR³ - hydrogen, lower alkoxy, halogenated lower alkoxycarbonyl, carboxy or halogen; X - group -O-, -S- or R³ where -O-(CH₂)_p-OR⁴, - hydrogen or alkaline metal, lower alkyl or lower alkoxycarbonyl; Z - group R⁴ where -O(CH₂)_q-R⁵, - hydrogen, lower alkyl or benzyl; p - whole number from 1 to 3; group R⁵ where q - whole number from 1 to 3; -O-(CH₂)_r-O-(CH₂)_s-OR⁶, - halogen, lower alkoxycarbonyl, phenyl or pyridyl; group of the formula R⁶ where r and s - whole number from 1 to 5; R⁷ - hydrogen or lower alkyl; group of the formulas (II) OR⁹, (III) R⁹, (IV) and (V) where t - whole number from 0 to 2; A - group of the formula (VI) where B - a group of the formula -NH or S; A - lower alkyl, pyridyl or furyl or a group of the formula (VII) where - hydrogen; w - whole number 0 or 1; or Z - group where - hydrogen, lower alkyl or phenyl; n - whole number from 0 to 2; m - whole number from 2 to 10; I and K - hydrogen or lower alkyl. Synthesized compounds were used in medicine. EFFECT: improved method of synthesis. 4 tbl