Hydrochloric Acid → 5-Methyl-pyridine-2-sulfonic acid [2-[2-(methanesulfonylamino-methyl)-pyridin-4-yl]-6-methoxy-5-(2-methoxy-phenoxy)-pyrimidin-4-yl]-amide

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Reaction Steps

A solution of 70 mg of 5-methyl-pyridine-2-sulfonic acid [2-(2-aminomethyl-pyridin-4-yl)-6-methoxy-5-(2-methoxy-phenoxy)-pyrimidin-4-yl]-amide hydrochloride, product of example 30 b), in CH2Cl2 (5 ml), was treated at RT with 50 mg of N-ethyldiisopropylamine, 15 mg of methanesulfonyl chloride and then refluxed for 18 h until the reaction was complete according to TLC analysis (CH2Cl2/MeOH: 95/5). The mixture was poured into cold diluted HCl and the product extracted into CH2Cl2. The organic layer was dried over Na2SO4 and the solvent removed in vacuo. The residue was purified on a silica gel chromatography column (eluted with Me2Cl2/MeOH: 95/5). Combination of the purified fractions and evacuation in vacuo afforded 5-methyl-pyridine-2-sulfonic acid [2-[2-(methanesulfonylamino-methyl)-pyridin-4-yl]-6-methoxy-5-(2-methoxy-phenoxy)-pyrimidin-4-yl]-amide as a light yellow solid. ISN mass spectrum, m/e 585 (M−1 calculated for C25H26N6O7S2: 585).

Provenance & Evidence