6-[5-(9,9-Difluoro-7-{2-[2-(2-methoxycarbonylamino-3-methyl-butyryl)-2-aza-bicyclo[2.2.1]hept-3-yl]-3H-benzoimidazol-5-yl}-9H-fluoren-2-yl)-1H-pyrrol-2-yl]-5-aza-spiro[2.4]heptane-5-carboxylic acid benzyl ester → HCID 66621511, compound

Participants

Reaction Steps

A mixture of 6-[5-(9,9-Difluoro-7-{2-[2-(2-methoxycarbonylamino-3-methyl-butyryl)-2-aza-bicyclo[2.2.1]hept-3-yl]-3H-benzoimidazol-5-yl}-9H-fluoren-2-yl)-1H-pyrrol-2-yl]-5-aza-spiro[2.4]heptane-5-carboxylic acid benzyl ester (127 mg) and 10% palladium on carbon, wet (29 mg) in ethanol (4 mL) was stirred under an hydrogen atmosphere for 18 h. Added more and 10% palladium on carbon, wet (50 mg) and continued reaction for 30 h. Reaction mixture was filtered through a pad of CELITE, concentrated and purified by flash column chromatography (silica gel, 5 to 20% methanol/dichloromethane) to give {1-[3-(6-{7-[5-(5-Aza-spiro[2.4]hept-6-yl)-1H-pyrrol-2-yl]-9,9-difluoro-9H-fluoren-2-yl}-1H-benzoimidazol-2-yl)-2-aza-bicyclo[2.2.1]heptane-2-carbonyl]-2-methyl-propyl}-carbamic acid methyl ester as a pale yellow film (21 mg).

Provenance & Evidence