反应详情

Prepared in an anlogous manner to example 138, step 1 using benzhydryl 1-(((Z)-(1-(2-((tert-butoxycarbonyl)amino)thiazol-4-yl)-2-(((2R,3S)-2-((4-(((methylsulfonyl)oxy)methyl)-2H-1,2,3-triazol-2-yl)methyl)-4-oxoazetidin-3-yl)amino)-2-oxoethylidene)amino)oxy)cyclopropanecarboxylate (54 mg, 0.068 mmol), sodium iodide (17.2 mg, 0.115 mmol), cesium carbonate (24.5 mg, 0.075 mmol), 6-mercapto-6,7-dihydro-5H-pyrazolo[1,2-a][1,2,4]triazol-4-ium chloride (13.4 mg, 0.075 mmol) and DMF (600 μL). The slurry was concentrated in vacuo, and the crude residue was purified via reverse phase prep HPLC (Xselect CSH, 30×100 mm, 5 μm, C18 column; ACN-water with 0.1% formic acid modifier, 60 mL/min), affording the title compound (19.7 mg, 34%) as white solid. LCMS: Rt=0.91 min, m/z=840.4 (M+) Method 2m_acidic.

1. concentrationThe slurry was concentrated in vacuo
2. customthe crude residue was purified via reverse phase prep HPLC (Xselect CSH, 30×100 mm, 5 μm, C18 column; ACN-water with 0.1% formic acid modifier, 60 mL/min)