30868-30-5

Geldanamycin (G304500) derivative.

ChEBI: A C-glycosyl compound that is 4-hydroxy-1H-pyrazole-5-carboxamide in which the hydrogen at position 3 has been replaced by a beta-D-ribofuranosyl group.

This pyrimidine nucleoside (FW = 261.23 g/mol), also known as pyrazomycin, exhibits antineoplastic activity and inhibits cell proliferation and DNA synthesis in cells by inhibiting orotidylate decarboxylase (uridine 5'-phosphate synthase). Pyrazofurin, also known as 3,b-D-ribofuranosyl-4- hydroxypyrazole-5-carboxamide, is the prodrug of the 5’-phosphate derivative. Target(s): adenosylhomocysteinase; 5-aminoimidazole-4- carboxamide-1-b-D-ribofuranosyl 5'-monophosphate formyltransferase; orotate phosphoribosyltransferase; orotidylate decarboxylase, or UMP synthase.