Lithium Hydroxide → HCID 57516123, compound

Participants

Reaction Steps

To a solution of {3-[3-((S)-2-amino-1,4,5,5-tetramethyl-6-oxo-1,4,5,6-tetrahydro-pyrimidin-4-yl)-4-fluoro-phenylamino]-2,2-dimethyl-cyclopentyl}-acetic acid ethyl ester (example 98, 0.05 mmole) in THF (1 ml), MeOH (0.3 ml) and H2O (0.3 ml) was added LiOH (1N, 0.1 mmole) and the reaction mixture was stirred at room temperature for 4 h. The mixture was concentrated in vacuo, the residue was diluted with aqueous HCl (0.5N) until pH=5 and washed with EtOAc. The aqueous phase was basified to pH=8 with a saturated aqueous NaHCO3 solution and extracted with EtOAc. The organic phase was dried over Na2SO4 and evaporated to yield a mixture of isomers of the title compound as a white solid. MS (ESI): m/z=433.5 [M+H]+.

Provenance & Evidence