(1-{4-[4-oxo-2-phenyl-7-(2H-pyrazol-3-yl)-4H-chromen-3-yl)-phenyl]-cyclobutyl}-carbamic acid tert-butyl ester → (1-{4-[8-(3-Methyl-1H-pyrazol-4-yl)-4-oxo-2-phenyl-4H-chromen-3-yl]-phenyl}-cyclobutyl)-carbamic acid tert-butyl ester

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Following the procedure of (1-{4-[4-oxo-2-phenyl-7-(2H-pyrazol-3-yl)-4H-chromen-3-yl)-phenyl]-cyclobutyl}-carbamic acid tert-butyl ester, {1-[4-(8-bromo-4-oxo-2-phenyl-4H-chromen-3-yl)-phenyl]-cyclobutyl}-carbamic acid tert-butyl ester was reacted with 3-methyl-1H-pyrazole-4-boronic acid pinacol ester to give the title compound as a gum (35 mg, 70%). LCMS (Method G): RT=3.81 min, [M+H]+=548.

Provenance & Evidence