Potassium Carbonate → N-[6-amino-1-cyclobutylmethyl-3-(2-fluoro-benzyl)-2,4-dioxo-1,2,3,4-tetrahydro-pyrimidin-5-yl]-2-[5-(5-chloro-1,3-dimethyl-1H-pyrazole-4-sulfonylamino)-pyridin-2-yl]-acetamide

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Reaction Conditions

Reaction Steps

A solution of N-[6-amino-3-(2-fluoro-benzyl)-2,4-dioxo-1,2,3,4-tetrahydro-pyrimidin-5-yl]-2-[5-(5-chloro-1,3-dimethyl-1H-pyrazole-4-sulfonylamino)-pyridin-2-yl]-acetamide in N,N,-dimethylformamide was treated with potassium carbonate (4.0 eq.) and (bromomethyl)cyclobutane (2.0 eq.). The reaction mixture was heated to 40° C. for 16 h. At this time, the N,N,-dimethylformamide was removed in vacuo. The residue was triturated with chloroform and then methanol to remove impurities. Flash chromatography (Merck Silica gel 60, 230–400 mesh, 10/90 methanol/chloroform) afforded N-[6-amino-1-cyclobutylmethyl-3-(2-fluoro-benzyl)-2,4-dioxo-1,2,3,4-tetrahydro-pyrimidin-5-yl]-2-[5-(5-chloro-1,3-dimethyl-1H-pyrazole-4-sulfonylamino)-pyridin-2-yl]-acetamide (15%) as a light brown solid; LRMS for C29H31ClFN7O5S (M+H)+ at m/z=645.

Provenance & Evidence