Figure 1.

Nature of guanine. (A) Watson–Crick base pairing involving cytosine and guanine. (B) Guanine moiety-containing drugs. (C) Design of a guanine isosteric scaffold by N-editing and its multicomponent reaction synthesis.

Nature of guanine. (A) Watson–Crick base pairing involving cytosine and guanine. (B) Guanine moiety-containing drugs. (C) Design of a guanine isosteric scaffold by N-editing and its multicomponent reaction synthesis.