CAS: 85267-67-0

5-(4-Hydroxybutyn-1-yl)uridine (5-BPU) is a nucleoside that inhibits viral replication. It is synthesized by the phosphoramidite method and modified to produce a 5-(4-hydroxybutyn-1-yl)uridine diphosphate (5-BPUDP). 5-BPUDP can be phosphorylated to form 5-(4-hydoxybutyn-1-yl)uridine monophosphate (5-BPUMP), which is more active than 5-(4-hydoxybutyn-1 -yl)uridine diphosphate. The antiviral activity of this drug has been demonstrated in vitro using human T lymphocytes, Epstein Barr virus, and herpes simplex virus type 1. It has also shown anticancer activity against leukemia cells in mice and rats.