p-Toluenesulfonic acid monohydrate → 4-[[2-(2-fluoroethyl)-6-methyl-5-oxo-2,6,9,11-tetrazabicyclo[5.4.0]undeca-7,9,11-trien-10-yl]amino]-3-methoxy-N-(1-methyl-4-piperidyl)benzamide

Participants

Reaction Steps

10-chloro-2-(2-fluoroethyl)-6-methyl-2,6,9,11-tetrazabicyclo[5.4.0]undeca-7,9,11-trien-5-one (Intermediate 157; 86 mg, 0.33 mmol), 4-amino-3-methoxy-N-(1-methyl-4-piperidyl)benzamide (WO06/018220; 104 mg, 0.40 mmol) and p-toluenesulphonic acid monohydrate (126 mg, 0.66 mmol) were heated together in 4-methyl-2-pentanol (4 mL) at 100° C. for 24 hours. The reaction mixture was diluted with water and methanol and the solution loaded onto an SCX-2 (5 g) column pre-wet with methanol. The column was washed with methanol (×2) and the product eluted with 2M NH3/MeOH. Product containing fractions were combined and evaporated. The resultant material was purified by base modified reverse phase preparative HPLC to yield the title compound as a yellow solid (60 mg, 37%).

Provenance & Evidence