HCID 86667461, compound → HCID 68007076, compound

Participants

Reaction Conditions

Reaction Steps

To a mixture of 2-chloro-9-methyl-7-(pyrrolidin-1-ylcarbonyl)-7,9-dihydro-8H-purine-8-one <the compound of Reference Example 16> (200 mg), bis(tri-tert-butylphosphine)palladium (18 mg) and tetrahydrofuran (1.0 ml) was added dropwise 0.5 mol/L benzyl zinc bromide/tetrahydrofuran solution (2.14 ml) under nitrogen atmosphere and the mixture was stirred at 130° C. under microwave irradiation for 1 hour. The reaction mixture was filtered through Celite and the filtrate was concentrated under reduced pressure. The obtained residue was purified by silica gel column chromatography (eluent: chloroform/methanol=100/0˜90/10). The obtained crude solids were recrystallized from a mixed solution of ethyl acetate and hexane to give the title compound 68 mg.

Provenance & Evidence