Sodium hydride → HCID 178472460, compound

Participants

Reaction Conditions

Reaction Steps

trans-4-{[(4-Chloro-1-guanidino-7-isoquinolinyl)sulphonyl]amino}cyclohexanecarboxylic acid hydrochloride ##STR59## Guanidine hydrochloride (273 mg, 2.86 mmol) was added in one portion to a stirred suspension of NaH (55 mg, 80% dispersion by wt in mineral oil, 1.82 mmol) in DME (10 mL) and the mixture was heated at 60° C. under N2 for 30 min. A solution of ethyl trans-4-{[(1,4-dichloro-7-isoquinolinyl)sulphonyl]amino}cyclohexanecarboxylate (370 mg, 0.78 mmol) in DMA (10 mL) was added and the mixture heated at 90° C. for 3 h. The solvents were evaporated in vacuo, the residue was partitioned between Et2O (100 mL), aqueous NH4Cl (10 mL), and water (150 mL). The separated aqueous phase was extracted with Et2O (3×100 mL) and the combined organic extracts were dried (MgSO4) and evaporated in vacuo. The residue was purified by column chromatography upon silica gel using toluene-i-PrOH-0.880NH3 (100:0:0 to 90:10:0.05) as eluant to give ethyl trans-4-{[(4-chloro-1-guanidino-7-isoquinolinyl)sulphonyl]amino}cyclohexanecarboxylate (70 mg, 0.15 mmol).

Provenance & Evidence