HCID 67078874, compound → HCID 18767658, compound

Participants

Reaction Steps

5-(2,6-Dioxo-1,3-dipropyl-2,3,6,7-tetrahydro-1H-purin-8-yl)-9-oxa-bicyclo[3.3.1]nonane-2-carboxylic acid methyl ester (50 mg, from step 2) was taken in MeOH (5 ml) LiOH (15 mg) was added and stirred at rt overnight. Next day MeOH was removed under reduced pressure, diluted with water and extracted with ethyl acetate. Aqueous layer was acidified with 1N HCl, extracted with ethyl acetate (3×25 ml). Combined organic layer was washed with brine, and dried over Na2SO4. Concentration of the solvent gave a white solid, which was purified by crystallizing from ether. Mass (ES+ 405)

Provenance & Evidence