DERIVATIVES OF BENZOFURAN, BENZOTHIOPHENE, INDOLE OR INDOLYSINE, METHODS OF THEIR SYNTHESIS, COMPOSITION SHOWING ANTIARRHYTHMIC EFFECT Russian patent published in 1997 - IPC

FIELD: organic chemistry. SUBSTANCE: product: derivatives of benzofuran, benzothiophene, indole or indolysine of the formula: where: R², R³ - H, C₁-C₆-alkyl; n = = 2-5; Het - free or substituted compounds: ; R₄ - H, C₁-C₄-alkyl; X - O, S; A - O, NH-C(O)-; Y - -C(O)-, -CH(OH), -CH₂-. Reagent 1: Het - -C(O)-. Reagent 2: where: R₉ - halide; n = 2-5. The synthesized compounds were used in cardiology. EFFECT: improved method of synthesis. 15 cl, 12 tbl