Sodium hydride → HCID 178498287, compound

Participants

Reaction Conditions

Reaction Steps

3-{[(4-Chloro-1-guanidino-7-isoquinolinyl)sulphonyl]amino}-4-methoxybenzoic acid hydrochloride ##STR12## Guanidine hydrochloride (179.8 mg, 1.88 mmol) was added in one portion to a suspension of NaH (54.9 mg, 80% dispersion by wt in mineral oil, 1.83 mmol) in DMSO (10 mL) and the mixture was heated at 60° C. under N2 for 20 min. Methyl 3-{[(1,4-dichloro-7-isoquinolinyl)sulphonyl]amino}-4-methoxybenzoate (238.6 mg, 0.541 mmol) was added and the mixture heated at 90° C. for 24 h. The solvents were evaporated in vacuo and the residue was purified by column chromatography upon silica gel using CH2Cl2 -MeOH-0.880NH3 (97:3:0.3 to 90:10:1) as eluant to give methyl 3-{[(4-chloro-1-guanidino-7-isoquinolinyl)sulphonyl]amino}-4-methoxybenzoate (203.2 mg, 0.43 mmol) as a pale yellow solid.

Provenance & Evidence