3',5'-O-(1,1,3,3-Tetraisopropyl-1,3-disiloxanediyl)uridine

N2-Phenoxyacetyl-3′,5′-O-(tetraisopropyldisiloxane-1,3-diyl)guanosine is a guanosine analog. Some guanosine analogs have immunostimulatory activity. In some animal models, they also induce type I interferons, producing antiviral effects. Studies have shown that the functional activity of guanosine analogs is dependent on the activation of Toll-like receptor 7 (TLR7)[1].

[1] Lee J, et al. Molecular basis for the immunostimulatory activity of guanine nucleoside analogs: activation of Toll-like receptor 7. Proc Natl Acad Sci U S A. 2003 May 27;100(11):6646-51. DOI:10.1073/pnas.0631696100