Synthesis and biological activity of novel N6-substituted and 2,N6-disubstituted adenine ribo- and 3′-C-methyl- ribonucleosides as antitumor agents

Loredana Cappellacci, Riccardo Petrelli, Palmarisa Franchetti, Patrizia Vita, Praveen Kusumanchi, Mohineesh Kumar, Hiremagalur N. Jayaram, Bingsen Zhou, Yun Yen, Mario Grifantini

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


A series of N6-aminopurine-9-β-d-ribonucleosides and ribose-modified 3′-C-methyl analogues substituted at N6- position with a small group like hydroxy, methoxy or amino group or at C2(N 6) position have been synthesized and tested against a panel of human leukemia and carcinoma cell lines. N6-Hydrazino-9-β-d- ribofuranosyl-purine (5) displayed the best antiproliferative activity in the low micromolar or submicromolar range against all tested tumor cell lines. The activity of this nucleoside is related in part to ribonucleotide reductase inhibition. C2-modification or 3′-C-methylation in N6- substituted adenosine analogues leads to a decrease or loss in activity.

Original languageEnglish
Pages (from-to)1499-1504
Number of pages6
JournalEuropean Journal of Medicinal Chemistry
Issue number5
Publication statusPublished - May 2011
Externally publishedYes


  • 3′-C-Methyladenosine
  • Antitumor activity
  • Purine ribonucleosides
  • Ribonucleotide reductase inhibitors

ASJC Scopus subject areas

  • Pharmacology
  • Drug Discovery
  • Organic Chemistry


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