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oai:ojs.www.eurjchem.com:article/1410 2016-06-30T06:25:29Z eurjchem:ART driver

Synthesis, characterization, physical and biological properties of some cholesterol derivatives Abdul‐Reda, Nabeel Abed Abass, Ahmed Kadhim Gebur, Noor Ali Steriods Cholesterol Liquid crystal Thermal analysis Mitsunobu reaction Antimicrobial activity A series of new cholesterol derivatives have been prepared via Mitsunobu reaction. The reaction was monitored by thin-layer chromatography (TLC) technique. All new compounds were characterized by melting points, elemental analysis, FT-IR, 1H, 13C and 2D-NMR spectroscopy. The antibacterial and antifungal activity of these derivatives was also determined. The phase transitions of the prepared derivatives were measured with the aid of differential scanning calorimetry. The textures of the mesophases have been determined with a hot stage equipped polarizing microscope, also the electrical conductivity of the solutions of these liquid crystals measured by electrical conductivity meter. The analysis showed that these prepared derivatives were liquid crystals. Atlanta Publishing House LLC 2016-06-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://www.eurjchem.com/index.php/eurjchem/article/view/1410 10.5155/eurjchem.7.2.206-212.1410 European Journal of Chemistry; Vol. 7 No. 2 (2016): June 2016; 206-212 2153-2257 2153-2249 eng https://www.eurjchem.com/index.php/eurjchem/article/view/1410/pdf_1410