Lithium hydroxide, monohydrate → HCID 68684241, compound

Participants

Reaction Steps

Ethyl2-[(2-cyclopentyl-6-methyl-5-oxo-2,6,9,11-tetrazabicyclo[5.4.0]undeca-7,9,11-trien-10-yl)amino]-1,3-oxazole-4-carboxylate (Intermediate 151; 160 mg, 0.40 mmol) was dissolved in THF (1 mL) and water (0.5 mL). Lithium hydroxide monohydrate (84 mg, 2.0 mmol) was added and a few drops of methanol and the mixture stirred at room temperature overnight. The mixture was neutralised with 2N HCl(aqu) and concentrated. The residue was taken up in MeOH/Water and absorbed onto an SCX column, washed with methanol/water and eluted with ammonia in methanol. Product containing fractions were concentrated, the residue taken-up in DCM, dried (MgSO4) and concentrated to give the title compound as a white solid (90 mg, 60%).

Provenance & Evidence