The Effects of Nitroazolopyrimidines on the A1 Adenosine Receptor and Intraocular Pressure in Rats

Author:

Savateev K. V.,Rusinov V. L.,Kotovskaya S. K.,Spasov A. A.,Naumenko L. V.,Taran A. S.,Brigadirova A. A.,Yakovlev D. S.,Sultanova K. T.,Shcherbakova N. M.

Abstract

Abstract Six compounds of the 5(7)-alkylamino-6-nitroazolopyrimidine and 8-alkylazolo[5,1-b]purine series were selected based on the structural analysis of A1 adenosine receptor inhibitors and the role of this biological target in the modulation of intraocular pressure, an important factor in the pathogenesis of glaucoma. These heterocycles were shown to exhibit a weak affinity towards the A1 adenosine receptor on an in vitro model of the adenosine-dependent change of the chronotropic effect on isolated atria of white mice. On the other hand, thiadiazolo[3,2-a]pyrimidines and triazolo[5,1-b]purine displayed an in vivo hypotensive effect in rats. The leading compound, 5-methyl-8-(hydroxyethyl)triazolo[5,1-b]purine) (0.2% solution), caused a 34% reduction of ophthalmotonus in 3 h without an adverse resorptive effect. In addition, using the MTT-test it was shown on the human HepG2 cell line that the heterocycles affecting the intraocular pressure were by one to two orders of magnitude less cytotoxic than the reference doxorubicin.

Publisher

Pleiades Publishing Ltd

Subject

Organic Chemistry,Biochemistry

Reference18 articles.

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