15 mg (0.03 mmol) of the compound from example 20A are dissolved in 0.7 ml of dry DMF, and 10 mg (0.04 mmol) of 4-(chloromethyl)-2-(4-chlorophenyl)-1,3-thiazole and 11 mg (0.14 mmol) of sodium bicarbonate are added. The reaction mixture is stirred at RT for 8 h. The mixture is then poured into 2 ml of saturated aqueous sodium bicarbonate solution, and the aqueous phase is extracted three times with in each case 5 ml of ethyl acetate. The combined organic phases are dried over magnesium sulphate, and the solvent is removed on a rotary evaporator.
