Nucleosides

特許 権利維持 Nucleosides are glycosylamines that can be thought of as nucleotides without a phosphate group. A nucleotide is composed of a nucleobase (also termed a nitrogenous base), a five-carbon sugar (either ribose or deoxyribose), and one or more phosphate groups while a nucleoside consists simply of a nucleobase and a 5-carbon sugar. In a nucleoside, the base is bound to either ribose or deoxyribose via a beta-glycosidic linkage. Examples of nucleosides include cytidine, uridine, adenosine, guanosine, thymidine and inosine.