IR Fourier spectroscopy methods have been adopted to study intramolecular interactions that occur in CCl4 solutions of antiviral derivatives of aminophenol. Analysis of the IR spectra showed that intramolecular bonds O–H···N, O–H···O=C, N–H···O=S=O, and O–H···O=S=O can occur in these compounds depending on the substituent on the amino group. Not only the presence of intramolecular O–H···N, O–H···O=S=O, and N– H···O=S=O hydrogen bonds in 2-amino-4,6-di-tert-butylphenol derivatives containing a sulfonamide fragment but also conformational equilibrium among these types of intramolecular interactions are essential for the manifestation of high efficiency in suppressing HIV-infection in cell culture.
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Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 77, No. 3, pp. 340–346, May–June, 2010.
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Belkov, M.V., Harbachova, A.N., Ksendzova, G.A. et al. Intramolecular hydrogen bonds in sulfur-containing aminophenols. J Appl Spectrosc 77, 315–320 (2010). https://doi.org/10.1007/s10812-010-9333-5
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DOI: https://doi.org/10.1007/s10812-010-9333-5