(±)-2-[2-(2-Cyclopropyl-2,3-dihydroindol-1-yl)-2-oxoethyl]-6-morpholin-4-yl-3H-pyrimidin-4-one is prepared by following the procedure described in example 1 using 0.90 g of sodium [4-(morpholin-4-yl)-6-oxo-1,6-dihydropyrimidin-2-yl]acetate, 0.60 g of (±)-2-cyclopropylindoline (reference example 12d) and 0.86 g of N-[3-(dimethylamino)propyl]-N′-ethylcarbodiimide hydrochloride in a mixture of 0.56 ml of pyridine and 10 ml of N,N-dimethylformamide. After purification by chromatography on a 100 g column of 20-45 μm silica, elution being carried out with a 90/10 v/v dichloromethane/methanol mixture, 0.88 g of (±)-2-[2-(2-cyclopropyl-2,3-dihydroindol-1-yl)-2-oxoethyl]-6-morpholin-4-yl-3H-pyrimidin-4-one is obtained in the form of a cream foam, the characteristics of which are the following:
