Pipemidic Acid → 2-(4-{[(3-Benzothiadiazolphenyl)amino]carbonothioyl}-1-piperazinyl)-8-ethyl-5-oxo-5,8-dihydropyrido[2,3-d]pyrimidine-6-carboxylic Acid

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반응 단계

Pipemidic acid (25 mg, 0.0824 mmol), 2,1,3-benzothiadiazol-5-yl isothiocyanate (15.8 mg, 0.0824 mmol) and triethylamine (23 μL, 0.165 mmol) were used. Purification on silica yielded compound 7 in Table 1, below (24 mg, 58%). 1H NMR (300 MHz, DMSO) δ 9.26 (s, 1H), 8.98 (s, 1H), 7.98-7.82 (m, 3H), 4.51-4.33 (m, 2H), 4.24-3.99 (m, 8H), 1.42-1.32 (m, 3H) ppm.

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