(5-Chloro-1-triisopropylsilanyl-1H-pyrrolo[2,3-b]pyridin-3-yl)-[2-fluoro-5-methoxy-4-(1-methyl-1H-benzoimidazol-2-ylmethoxy)-phenyl]-methanol → 6-Chloro-2-[5-fluoro-2-methoxy-4-(1H-pyrrolo[2,3-b]pyridin-3-ylmethyl)-phenoxymethyl]-1H-benzimidazole

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Reaction Steps

6-Chloro-2-[5-fluoro-2-methoxy-4-(1H-pyrrolo[2,3-b]pyridin-3-ylmethyl)-phenoxymethyl]-1H-benzimidazole (P-2112) was prepared using the same protocol as described in Scheme 47, step 4, substituting (5-chloro-1-triisopropylsilanyl-1H-pyrrolo[2,3-b]pyridin-3-yl)-[2-fluoro-5-methoxy-4-(1-methyl-1H-benzoimidazol-2-ylmethoxy)-phenyl]-methanol 145 with (5-chloro-2-{5-fluoro-4-[hydroxy-(1-triisopropylsilanyl-1H-pyrrolo[2,3-b]pyridin-3-yl)-methyl]-2-methoxy-phenoxymethyl}-benzoimidazole-1-carboxylic acid tert-butyl ester 153. Purification with silica gel flash chromatography eluting with a gradient of methanol (2 to 25%) in dichloromethane gave the desired compound (P-2112, 0.052 g, 59%). MS (ESI) [M+H+]+=437.1, 439.1.

Provenance & Evidence