abstract |
Disclosed is a novel artificial fluorescent nucleic acid base having a functional group, which consists of two or more heterocyclic molecules being polycondensed together, at the 6-position (the 6-position of purine ring) of a purine base, a 2-deazapurine base or a 2,7-deazapurine base. Also disclosed are a compound containing said artificial base, a derivative of the same, and a nucleic acid having a nucleotide, which contains said artificial base, integrated therein. Moreover, disclosed is a method for preparing said nucleic acid. The aforesaid artificial base has excellent fluorescent characteristics and shows excellent properties as a universal base. |