التفاصيل البيبلوغرافية
| العنوان: |
Microwave-assisted synthesis of nicotinonitrile and/or arene-linked bis(chromene-thiazoles) as new VRE and MRSA inhibitors. |
| المؤلفون: |
Mekky, Ahmed E. M., Sanad, Sherif M. H. |
| المصدر: |
Synthetic Communications; 2022, Vol. 52 Issue 24, p2276-2290, 15p, 9 Diagrams, 5 Charts, 1 Graph |
| مصطلحات موضوعية: |
THIAZOLES, OXAZOLIDINONES, METHICILLIN-resistant staphylococcus aureus, LINEZOLID, MUTAGENICITY testing, AMES test, STAPHYLOCOCCUS aureus, ENTEROCOCCUS faecalis |
| مستخلص: |
Two series of nicotinonitrile and/or arene-linked bis(thiazoles) possessing chromene units are efficiently prepared in this study. A one-pot protocol was designed to prepare the target hybrids involved in the reaction of the respective salicylaldehydes, 2-cyanoethanethioamide, and the appropriate bis(α-haloketone). The reaction was irradiated by microwaves at 100 °C for 40–90 min in dioxane and mediated by piperazine to produce the desired products in 84–95% yields. Nicotinonitrile-linked hybrids 2b, and 2c attached to 6-(4-chlorophenyl) or 6-(4-nitrophenyl) units, respectively, had the best antibacterial activity, particularly against Staphylococcus aureus, and Enterococcus faecalis strains. They showed equipotent efficacy to ciprofloxacin with MIC/MBC values in the ranges from 5.9 to 12.0 µM. Additionally, 2c demonstrated comparable inhibitory activity to linezolid against MRSA and VRE strains with MIC/MBC values ranging from 2.9 to 11.8 µM. The Ames mutagenicity test was used to conclude that 2c was not mutagenic to the Salmonella strains. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
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