Ethyl propiolate → HCID 11962692, compound

Participants

Reaction Steps

0.470 g of diisopropylethylamine and ethyl prop-2-ynoate (1.9 mmol) were dissolved in 20 mL of THF. To the solution was added (4S,2R,3R,5R)-2-[6-(cyclopentylamino)-2-(azido)purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol (1.3 mmol) and 350 mg of CuI. The mixture was stirred at room temperature for 24 hours. The solvent was then removed by evaporation and the residue treated with 5 mL of ethanol and ethyl ether. The yellow solid was collected by filtration, and washed with ethanol and ether to afford ethyl 1-{9-[(4S,3R,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-6-(cyclopentylamino)purin-2-yl}-1,2,3-triazole-4-carboxylate, a compound of Formula I.

Provenance & Evidence