反应详情

0.30 mL (2.16 mmol) triethylamine were added to a mixture of 300 mg (0.54 mmol) (R)-2-(4-amino-3-chloro-5-trifluoromethyl-phenyl)-1-carboxy-ethyl 4-(2-oxo-1,2,4,5-tetrahydro-1,3-benzodiazepin-3-yl)-piperidine-1-carboxylate (Example 1f), 220 mg (0.64 mmol) ethyl([1,4′]bipiperidinyl-4-yloxy)-acetate (Example A13c) and 200 mg (0.62 mmol) TBTU in 3 mL DMF and the reaction mixture was stirred for 4 h at RT. Ice and saturated NaHCO3 solution were added and the precipitate was filtered off. This was taken up in DCM and a little EtOH and dried over Na2SO4. After elimination of the desiccant and solvent the residue was purified by HPLC; the fractions containing the product were combined and lyophilised.

1. filtrationthe precipitate was filtered off
2. dry with materiala little EtOH and dried over Na2SO4
3. customAfter elimination of the desiccant and solvent the residue was purified by HPLC
4. additionthe fractions containing the product