FIELD: organic chemistry, pharmacy. SUBSTANCE: invention proposes derivatives of ethanolamine of the general formula (I) 
where R1 - phenyl, naphthyl, indalyl, pyridyl, benzofuranyl, benzodioxalyl; R2 - halogen atom, nitro-group and others; R3 - hydrogen atom, benzyl and others; n = 0-3. Method of synthesis of compounds of the formula (I) involves an interaction of compound of the formula (II): 
with compound of the formula (III) 
. Invention proposes also a pharmcomposition containing an effective amount of compounds of the formula (I) in combination with a pharmaceutically acceptable nontoxic carrier or vehicle that can be used for treatment and/or prophylaxis of human or animals with uresis disorder, spasms or increased peristalsis of gastroenteric tract. EFFECT: improved method of synthesis, enhanced effectiveness. 8 cl, 32 ex
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