CENTRAL NERVOUS SYSTEM TISSUE-LABELING COMPOSITION, METHOD FOR LABELING CENTRAL NERVOUS SYSTEM TISSUE, AND SCREENING METHOD USING CENTRAL NERVOUS SYSTEM TISSUE-LABELING COMPOSITION
作者:A. A. Karasev、L. L. Lukatskaya、M. I. Rubtsov、Z. A. Sizova、A. O. Doroshenko
DOI:10.1023/a:1021616027620
日期:——
3-(Benzoimidazol-2-yl)-2-phenylimino-2H-chromenes were synthesized. The protolytic equilibrium constants in 50% ethanol were determined. The correlations of the pK(a) values for the compounds in the ground and excited states and the PM3-calculated heats of formation with the sigma(+) constants of substituents were established. The nitrogen atom of the benzoimidazole fragment is the center of protonation in the studied compounds.