HCID 89813173, compound → HCID 89813116, compound

Participants

Reaction Steps

A mixture of 3-[(1-cyano-7-cyclohexyloxy-4-hydroxy-isoquinoline-3-carbonyl)-amino]-2,2-dimethyl-propionic acid tert-butyl ester (55 mg, 0.118 mmol) in (½) TFA/CH2Cl2 (3 mL) was stirred at room temperature for 3 h and concentrated. Residue was taken up with 30 mL of water and the resultant suspension was basified by 1 N NaOH to pH=9-10. The clear solution was then acidified by 1 N HCl to pH=3-4. Precipitate was collected and dried. Crude product was triturated with MeOH (3 mL). Solid was collected and dried in vacuo to provide the title compound 8.6 mg (0.02 mmol) in 18% yield. LC-MS ESI−: 410.00 (M−1)−.

Provenance & Evidence