Inhibition of Mycobacterium tuberculosis strains H37Rv and MDR MS-115 by a new set of C5 modified pyrimidine nucleosides
2013
Shmalenyuk, Eduard R. | Chernousova, Larisa N. | Karpenko, Inna L. | Kochetkov, Sergey N. | Smirnova, Tatiana G. | Andreevskaya, Sofia N. | Chizhov, Alexander O. | Efremenkova, Olga V. | Alexandrova, Ludmila A.
Two sets of pyrimidine nucleoside derivatives bearing extended alkyloxymethyl or alkyltriazolidomethyl substituents at position 5 of the nucleobase were synthesized and evaluated as potential antituberculosis agents. The impact of modifications at 3′- and 5′-positions of the carbohydrate moiety on the antimycobacterial activity and cytotoxicity was studied. The highest effect was shown for 5-dodecyloxymethyl-2′-deoxyuridine, 5-decyltriazolidomethyl-2′-deoxyuridine, and 5-dodecyltriazolidomethyl-2′-deoxycytidine. They effectively inhibited the growth of two Mycobacterium tuberculosis strains in vitro, laboratory H37Rv (MIC₉₉=20, 10, and 20μg/mL, respectively) and clinical MDR MS-115 resistant to five top antituberculosis drugs (МIC₉₉=50, 10, and 10μg/mL, respectively).
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