Nucleoside activation by nucleoside diphosphate kinase and inhibition of HIV-1 reverse transcriptase were studied comparatively for a new class of nucleoside analogs with a borano (BH3-) or a thio (SH) group on the alpha-phosphate. Both the alpha-Rp-borano derivatives of AZT and d4T improved phosphorylation by NDP kinase, inhibition of reverse transcription as well as stability of alpha-borano nonophosphate derivatives in terminated viral DNA chain.
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Schneider et al. (2001) studied this question.
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