FIELD: organic chemistry. SUBSTANCE: product: derivatives of benzo-[c] -phenanthridinium of the formula A where: M and N each means hydroxy-group and lower alkoxy, or M and N mean simultaneously hydrogen atom or form together methylenedioxy-group; X- - acid residue or hydrogen acid residue; R - lower alkyl. Reagent 1: compound of the formula C where Y - halogen atom; W - protective group. Reagent 2: organotin compound. Conditions: initiating agent of radical reaction, organic hydrocarbon solvent. Pharmcomposition contains compounds of the formula A1. Synthesized compounds were used in medicine as drugs. EFFECT: improved method of synthesis. 16 cl, 8 tbl
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