Synthesis and Biological Activity of Some Mono- and Bis-ω-Ammonioalkyluracil Bromides

Compounds possessing anticholinesterase activity have been found in a series of mono- and bis-tetraalkylammonium derivatives containing uracil cycles at various distances from onium groups. These compounds are subdivided into high/moderate toxicity (in mice) and low/zero toxicity (in daphnia). Under the functional loading conditions (treadmill test in mice upon i.p. drug injection), compounds with an alkylammonium chain length of n = 5 are more effective and less toxic than the reference drugs (proserine [neostigmine] and BW284c51) and induce the development of a clearly pronounced myorelaxant effect with a duration of not less than 5 days with ED50 = 0.06 – 0.13 µM/kg and LD50/ED50 = 20.0 – 188.0.