作者:Prasad P. Phadnis、Amit Kunwar、Mukesh Kumar、Ratikanta Mishra、Amey Wadawale、K.I. Priyadarsini、Vimal K. Jain
DOI:10.1016/j.jorganchem.2017.09.029
日期:2017.12
2,2 '- Diselenobis(3-pyridinol), [2-C5H3N(3-OH)Se](2) (DISPOL) (1) and 3-hydroxypyridine-2-(1H) selone (2) were synthesized and characterized by microanalyses, NMR (H-1, C-13H-1}, and Se-77H-1}) spectroscopy. The 1 on recrystallization from various organic and aqueous solutions resulted in different polymorphs which were unambiguously characterized by single crystal X-ray diffraction analyses at room as well as low temperatures. Differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and differential thermal analysis (DTA) of 1 confirmed the existence of two polymorphs. The bulk 1 and its polymorphs exhibited potent cytotoxicity against A549 human lung carcinoma cells (IC50 values approximate to 10 mu M). The compound is thermodynamically stable and is a promising candidate for further pharmacological studies as a cytotoxic agent. (C) 2017 Elsevier B.V. All rights reserved.