摘要:
Three novel 4-subsituted-7-(2'-deoxy-2'-fluoro-4'-azido-beta-D-ribofuranosyl)pyrrolo[2,3-d] pyrimidine analogues were designed, synthesized, and tested for their anti-HIV-1 activity. Initial biological studies indicated that among these pyrrolo[2,3-d] pyrimidine ribonucleoside analogues, 4-amino-7-(2'-deoxy-2'- fluoro-4'-azido-beta-D-ribofuranosyl)pyrrolo[2,3-d]pyrimidine 10 exhibited the most potent anti-HIV-1 activity (EC50 = 0.5 +/- 0.3 mu M), while 4-hydroxy-7-(2'-deoxy-2'-fluoro-4'-azido-beta-D-ribofuranosyl)pyrrolo[ 2,3-d]pyrimidine 9 and 4-amino-5-fluoro-7-(2'-deoxy-2'-fluoro-4'-azido-beta-D-ribofuranosyl)pyrrolo[2,3-d]pyrimidine 11 showed moderate activity (EC50 = 13 +/- 8 and 5.4 +/- 0.3 mu M, respectively). The cytotoxicity of these compounds has also been assessed. No significant cytotoxicities were found for any of these compounds with concentrations up to 25 mu M. (C) 2011 Elsevier Ltd. All rights reserved.