D-Alanine → HCID 135870685, compound

Participants

Reaction Steps

A mixture of 3-(4-Chloro-phenyl)-4-hydroxy-isothiazolo[5,4-c]pyridine-5-carboxylic acid ethyl ester (50 mg, 0.149 mmol), D-alanine (400 mg, 4.49 mmol) and NaOMe (7.45 mL, 3.72 mmol, 0.5 M solution in MeOH) was refluxed for 48 h before it was concentrated in vacuo. The residue was dissolved in water (50 mL) and washed with CH2Cl2 (2×20 mL). The aqueous solution was then acidified by addition of 1N HCl solution. The resulting precipitate was sucked off, washed with water, and dried in vacuo to give the title compound as a white solid (39.2 mg): MS (m/z) 376.0 (M−1).

Provenance & Evidence