Nucleotides are
Purines & Pyrimidines Are Heterocyclic Compounds.Nucleosides Are N-Glycosides.Nucleotides Are Phosphorylated Nucleosides .Ref: Harper&;s Biochemistry; 30th edition; Chapter 32; Nucleotides
Heterocyclic Compounds
N-Glycosides
Phosphorylated Nucleosides
O-Glycosides
Metabolism of nucleic acids