July 3, 2023
Pharmacodynamics
GS-441524 nucleoside is phosphorylated by nucleoside kinases (probably adenosine kinase (ADK), which is the enzyme that phosphorylates the structurally similar ribavirin), and then phosphorylated again by nucleoside-diphosphate kinase (NDK) to the active nucleotide triphosphate form. The triphosphate of GS-441524, GS-443902, is also the bioactive anti-viral agent generated by remdesivir, but is generated by a different biochemical mechanism from the later.