We report herein a solvent‐free and microwaved‐assistedsynthesis of several water soluble acyclic pentaheteroaryls containing1,2,4‐oxadiazole moieties (1–7). Their binding interactions with DNA quadruplex structures were thoroughly investigated by FRET melting, fluorescent intercalator displacement assay (G4‐FID) and CD spectroscopy. Among the G‐quadruplexes considered, attention was focused on telomeric