反应详情

1-Cyclopentyl-3-(2-fluoro-3,5-dimethoxy-phenyl)-7-(2-hydroxy-1-hydroxymethyl-ethylamino)-3,4-dihydro-1H-pyrimido[4,5-d]pyrimidin-2-one was prepared as in Example 2 using 0.4 g (0.92 mmol) 1-cyclopentyl-3-(2-fluoro-3,5-dimethoxy-phenyl)-7-methanesulfinyl-3,4-dihydro-1H-pyrimido[4,5-d]pyrimidin-2-one and 0.25 g (2.76 mmol) serinol. The final product was purified by column chromatography (20:1 dichloromethane/methanol). This gave 0.29 g (68%) of 1-cyclopentyl-3-(2-fluoro-3,5-dimethoxy-phenyl)-7-(2-hydroxy-1-hydroxymethyl-ethylamino)-3,4-dihydro-1H-pyrimido[4,5-d]pyrimidin-2-one as a white solid: mp 194° C.–195° C.; MS (APCI) m/z 462.2, 463.2.

1. customThe final product was purified by column chromatography (20:1 dichloromethane/methanol)