2-(4-Methylphenyl)acetyl chloride → 1-[1-(1-Hydroxy-ethyl)-4-phenyl-butyl]-6-(4-methyl-benzyl)-1,5-dihydro-pyrazolo[3,4-d]-pyrimidin-4-one

Participants

Reaction Steps

Starting from 400 g (1.32 mmol) of 5-amino-1-[1-(1-hydroxy-ethyl)-4-phenyl-butyl]-1H-pyrazole-4-carboxamide and 578 mg (3.44 mmol) of 4-methylphenylacetylchloride, the title compound is prepared analogously to the protocol of Example 13. This gives 117 mg (21%) of the diastereomer which elutes more rapidly, M.p.: 133° C., and 75 mg (13.6%) of the diastereomer which elutes more slowly, M.p.: 136° C.

Provenance & Evidence