Synthesis and Biological Evaluation of Acyclic 3-[(2-Hydroxyethoxy)methyl] Analogues of Antiviral Furo- and Pyrrolo[2,3-<i>d</i>]pyrimidine Nucleosides
作者:Zlatko Janeba、Jan Balzarini、Graciela Andrei、Robert Snoeck、Erik De Clercq、Morris J. Robins
DOI:10.1021/jm050291s
日期:2005.7.1
The remarkably potent and specific activity against varicella-zoster virus (VZV) shown by 2'deoxymicleosides of furo[2,3-d]pyrimidin-2(3H)-one and related ring systems is dependent on key structural features including the length and nature of the side-chain at C6 and the structure and stereochemistry of the sugar moiety at N3. Removal of the X-hydroxyl group from potent anti-VZV 2'-deoxynucleosides results in loss of the VZV activity, but such 2',3'-dideoxynucleoside analogues have shown anti-HCMV activity. We now report acyclic analogues with comparable side-chains at C6, but with the sugar moiety at N3 replaced with the (2-hydroxyethoxy)methyl group (present in the antiherpes drug acyclovir). Examples of both furo[2,3, d]-and pyrrolo[2,3-d]pyrimidin-2(3H)-one acyclic analogues were prepared and evaluated in a number of virus infected cells and in tumor cell cultures. Certain of the long-chain analogues showed activity against VZV and HCMV. No significant activity against other DNA and RNA virus replication or against tumor cell proliferation was observed.