Bridged isocytosine-adenosine compounds: Synthesis and antibacterial evaluation

In an approach to novel antibacterial agents, we synthesized a series of 5-nitrosoisocytosines in which a 6-alkylamino substituent is bridged, through an amide linkage at the terminus of the alkyl chain, to the 5′-position of a 5′-deoxyadenosine moiety. A corresponding series of 5-nitro analogues were also prepared. None of the bridged compounds showed significant antibacterial activity.