5-Hydroxypyridine-2-carboxylic acid → 3-Butyl-8-chloro-1-{4-[5-(5-hydroxy-2-pyridinyl)-1,2,4-oxadiazol-3-yl]butyl}-3,7-dihydro-1H-purine-2,6-dione

Participants

Reaction Conditions

Reaction Steps

5-Hydroxy-2-pyridinecarboxylic acid (24 mg, 0.17 mmol) and CDl (31 mg, 0.19 mmol) were stirred in anhydrous DMSO (0.9 ml) at rt for 1 h. (1Z)-5-(3-Butyl-8-chloro-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-1-yl)-N-hydroxypentanimidamide (68 mg, 0.19 mmol) was added and the mixture was stirred at 90° C. for 16 h. The mixture was purified by MDAP and the product fractions concentrated to give the title compound as a white solid (19 mg, 24%).

Provenance & Evidence