Add time:08/25/2019         Source:sciencedirect.com

The derivatives of hydrogenated pyrido[4,3-b]indoles as potential neuroprotectors have been synthesized. The different substituents were introduced into position 8 of the carboline fragment of the molecule: methyl-, methoxy-, fluorine- and chlorine-. Biological tests have shown that all the studied compounds can modulate glutamate-dependent uptake of calcium ions in rats’ cerebral cortex synaptosomes. The shake-flask method was used to measure the solubility of the compounds in the buffer solution (pH 7.4), hexane and 1-octanol within the temperature interval of 293.15–313.15 К. All the derivatives have been found to have low solubility (not exceeding 8 ∙ 10−4 mole fractions) in the mentioned solvents. The effect of thermophysical and protolytic properties of the compounds on the solubility have been studied and the thermodynamic functions of compounds dissolution in the solvents used have been calculated.

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