Glycine → [(1-Benzyl-3-chloro-4-hydroxy-1H-pyrrolo[2,3-c]pyridine-5-carbonyl)-amino]-acetic acid

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Reaction Steps

A mixture of 1-benzyl-3-chloro-4-(2,2-dimethyl-propionyloxy)-1H-pyrrolo[2,3-c]pyridine-5-carboxylic acid ethyl ester (65 mg) and NaOMe/HOMe (0.94 mL, 0.5 M) was refluxed for 1 h; then cooled, partitioned between EtOAc and diluted HCl solution, organic phase was washed with sat. NaCl solution, dried over sodium sulfate and then filtered, concentrated to give a residue, which was refluxed with glycine (236 mg) and NaOMe/HOMe (4.71 mL) overnight; the solvent was subsequently removed, the residue was partitioned between MTBE (methyl tert-butyl ether) and water, the aqueous phase was then acidified with 2 M HCl to pH=1-2, the solids were collected with filtration after cooled in an ice/water bath, the solids were then freeze dried to give the title compound (27 mg). ESI (m/z): 360 (M+H)+.

Provenance & Evidence