Lithium Hydroxide → cis(+/-)-2-(4-{[(4-Chloro-5-ethyl-1H-imidazol-2-yl)carbonyl]amino}-3-methoxypiperidin-1-yl)-1,3-benzoxazole-7-carboxylic acid

Participants

Reaction Steps

Methyl cis(±)-2-(4-{[(4-chloro-5-ethyl-1H-imidazol-2-yl)carbonyl]amino}-3-methoxypiperidin-1-yl)-1,3-benzoxazole-7-carboxylate obtained in Example (191a) (75 mg, 0.16 mmol) was dissolved in methanol (1 ml) and THF (1 ml). A 2 N aqueous lithium hydroxide solution (1 ml) was added, and the mixture was stirred at room temperature overnight. The organic solvent was evaporated under reduced pressure, followed by neutralization with 1 N hydrochloric acid. The resulting solid was collected by filtration, washed with distilled water, and dried under reduced pressure at 50° C. to obtain the title compound as a solid.

Provenance & Evidence