Methyl 4-hydroxy-3,5-dimethylbenzoate → 4-{2-Cyclohexyl-2-[2-(2,6-dimethoxy-pyridin-3-yl)-5,6-difluoro-benzoimidazol-1-yl]-ethoxy}-3,5-dimethyl-benzoic acid methyl ester

Participants

Reaction Steps

The title compound was prepared according to Example 4, intermediate, from 2-cyclohexyl-2-[2-(2,6-dimethoxy-pyridin-3-yl)-5,6-difluoro-benzoimidazol-1-yl]-ethanol (Example 73, intermediate b), 4-hydroxy-3,5-dimethyl-benzoic acid methyl ester (commercially available), tri-N-butylposphine and N′N′N′N-tetramethylazodicarboxamide. The resulting powder was purified by silica gel chromatography using a MPLC system (CombiFlash Companion, Isco Inc.) eluting with a gradient of n-heptane:tert-butyl methyl ether (100:0 to 50:50) to give the desired compound as an off-white solid (27%). MS (Turbo Spray): m/z=580.3 [M+H].

Provenance & Evidence