N,N,2'',3''-Tetrabenzoyladenosine, is a Multibenzoylated nucleoside, serving as the key starting materials in the synthesis of small oligonucleotides such as dinucleotides and trinucleotides. It can be used for the preparation of trinucleotides 2-5 A, 2-5 core, and their analogs, which are known for their antiviral and antitumor activity.