Hydrochloric Acid → HCID 68617266, compound

Participants

Reaction Steps

A solution of 2-(1-methoxycarbonyl-2-vinyl-cyclopropylcarbamoyl)-4-(6-methoxy-isoquinolin-1-yloxy)-pyrrolidine-1-carboxylic acid tert-butyl ester (prepared as described in Example 27; 0.50 g, 0.98 mmol) in THF (3 mL) was treated with 4M HCl in dioxanes (1.2 mL, 4.9 mmol) at rt. After 4 h, additional 2-(1-methoxycarbonyl-2-vinyl-cyclopropylcarbamoyl)-4-(6-methoxy-isoquinolin-1-yloxy)-pyrrolidine-1-carboxylic acid tert-butyl ester (0.30 g, 0.58 mmol) and 4M HCl/dioxane solution (5 mL) were added. After an additional 4 h, the solvent was removed in vacuo and the resulting foamy white solid was taken up in DMF (3 mL) and treated with tert-Butoxycarbonylamino-cyclohexyl-acetic acid (0.55 g, 2.1 mmol), HATU (1.0 g, 2.7 mmol) and DIPEA (0.78 mL, 4.5 mmol) at rt and allowed to age overnight. The reaction mixture was diluted in EtOAc and washed consecutively with saturated NaHCO3, brine and then dried over anhydrous Na2SO4. After concentration in vacuo, the residue was purified via column chromatography on SiO2 (0-75% EtOAc/hex) to produce 1.0 g (89% over two steps) of 1-{[1-(2-tert-butoxycarbonylamino-2-cyclohexyl-acetyl)-4-(6-methoxy-isoquinolin-1-yloxy)-pyrrolidine-2-carbonyl]-amino}-2-vinyl-cyclopropanecarboxylic acid methyl ester as an off-white solid. LCMS found 651.1 [M+H]+.

Provenance & Evidence