“…Phenanthridinium-nucleobase conjugates [1], metallocene-nucleobase conjugates [2], symmetrical and unsymmetrical ˛,ω-nucleobase mono-& bis-amide conjugates [3], cyclodextrin-DNA conjugate [4], ferrocene-bis(nucleobase) conjugates [5], neamine-nucleoside conjugates [6], DNA-peptide conjugates [7], peptide-nucleobase conjugates, nucleobase PNA conjugates [8] are few examples that can inhibit the expression a specific DNA or mRNA molecule, inducing a blockade in the transfer of genetic information from DNA to protein either by antigene or antisense strategy. Single stranded domains of DNA and RNA play an essential role in a number of processes in living cells including those involving viruses.…”