Hydrochloric Acid → 1-(4-chlorobenzyl)-N-[(1S)-1-(4-{[(3-hydroxypropyl)sulfonyl]carbamoyl}phenyl)ethyl]-1H-indole-7-carboxamide

Participants

Reaction Steps

To a mixture of 1-(4-chlorobenzyl)-N-[(1S)-1-(4-{[(3-acetoxypropyl)sulfonyl]carbamoyl}phenyl)ethyl]-1H-indole-7-carboxamide (200 mg), THF (3 mL), and methanol (3 mL) was added a 1 M aqueous sodium hydroxide solution (1.7 mL), followed by stirring at room temperature overnight. The reaction mixture was adjusted to pH 4 by adding 1 M hydrochloric acid (1.7 mL), and further, water (20 mL) was added thereto, followed by stirring at room temperature for 30 minutes. The precipitated solid was collected by filtration, washed with water (4 mL), and then washed with cold ethanol (3 mL) to obtain 1-(4-chlorobenzyl)-N-[(1S)-1-(4-{[(3-hydroxypropyl)sulfonyl]carbamoyl}phenyl)ethyl]-1H-indole-7-carboxamide (80 mg) as a pale yellow solid.

Provenance & Evidence