Abstract
A novel G-quadruplex binder, L1H1-7OTD (shown in color by atom type), was developed. This macrocyclic heptaoxazole potently and selectively stabilizes telomeric DNA in an intramolecular antiparallel G-quadruplex conformation. L1H1-7OTD shows selective cytotoxicity toward HeLa cells, a telomerase-positive cell line.
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