期刊
BIOORGANIC & MEDICINAL CHEMISTRY
卷 13, 期 13, 页码 4168-4175出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.bmc.2005.04.042
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Thymidine conjugates containing metallacarborane, {8-[5-(N-3-thymidine)-3-oxa-pentoxy]-3-cobalt bis(1,2-dicarbollide)}(-) (5) and {8-[5-(O-4-thymidine)-3-oxa-pentoxy]-3-cobalt bis(1,2-dicarbollide)}(-) (6) ions and several simple [3-cobalt bis(1,2-dicarbollide)]- ion (1) derivatives have been studied as potential boron carriers for BNCT. Compound 6 and some nonnucleoside derivatives of 1 were not toxic above 100 mu M. The partition coefficient for both metallacarborane bearing thymidine conjugates 5 and 6 was more than 500 times higher than that of unmodified nucleoside. The cellular uptake studies showed accumulation of compounds 6 in V79 Chinese hamster cells but not of compound 5. The low toxicity of conjugate type of 6 together with its high partition coefficient suggest that judicially designed derivatives of metallacarboranes can be considered as potential boron carriers for BNCT. (c) 2005 Elsevier Ltd. All rights reserved.
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