Molecules (2018)
Update date:2022-08-11
Topics:
Jó?wiak, Micha?
St?pień, Karolina
Wrzosek, Ma?gorzata
Olejarz, Wioletta
Kubiak-Tomaszewska, Gra?yna
Filipowska, Anna
Filipowski, Wojciech
Struga, Marta
Thirty new derivatives of palmitic acid were efficiently synthesized. All obtained compounds can be divided into three groups of derivatives: Thiosemicarbazides (compounds 1–10), 1,2,4-triazoles (compounds 1a–10a) and 1,3,4-thiadiazoles (compounds 1b–10b) moieties. 1H-NMR, 13C-NMR and MS methods were used to confirm the structure of derivatives. All obtained compounds were tested in vitro against a number of microorganisms, including Gram-positive cocci, Gram-negative rods and Candida albicans. Compounds 4, 5, 6, 8 showed significant inhibition against C. albicans. The range of MIC values was 50–1.56 μg/mL. The halogen atom, especially at the 3rd position of the phenyl group was significantly important for antifungal activity. The biological activity against Candida albicans and selected molecular descriptors were used as a basis for QSAR models, that have been determined by means of multiple linear regression. The models have been validated by means of the Leave-One-Out Cross Validation. The obtained QSAR models were characterized by high determination coefficients and good prediction power.
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