To a solution of (3R)-3-methyl-1-{[4-(trifluoromethyl)phenyl]sulfonyl}piperazine (may be prepared as described in Description 10) (80.0 mg, 0.259 mmol) in DMF (4 ml) was added pyrazolo[1,5-a]pyrimidine-3-carboxylic acid (42.3 mg, 0.259 mmol), HOBT.H2O (39.7 mg, 0.259 mmol), HBTU (98 mg, 0.259 mmol) and DIPEA (0.136 ml, 0.778 mmol) and the reaction mixture was stirred at rt for 1.5 hours. The DMF was evaporated in vacuo then DCM (5 ml) was added and the whole washed with saturated aq. NaHCO3 solution (5 ml), dried on a phase separation cartridge and evaporated in vacuo. The crude material was dissolved in MeCN/DMSO 1:1 and purified by MDAP to give the title compound (100 mg).
