Diisopropylethylamine → 4-{(3S)-3-[(tert-Butoxycarbonyl)amino]piperidin-1-yl}-3-({[6-(2,6-difluorophenyl)-5-fluoropyridin-2-yl]carbonyl}amino)-6,7-dihydro-5H-cyclopenta[b]pyridin-7-yl acetate

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Reaction Steps

3-Amino-4-{(3S)-3-[(tert-butoxycarbonyl)amino]piperidin-1-yl}-6,7-dihydro-5H-cyclopenta[b]pyridin-7-yl acetate (6.0 mg, 0.015 mmol), 6-(2,6-difluorophenyl)-5-fluoropyridine-2-carboxylic acid (4.7 mg, 0.018 mmol), HATU (15.0 mg, 0.038 mmol), DMF (0.036 mL) and DIPEA (6.0 mg, 0.046 mmol) were mixed together and stirred at room temperature for 1 h. The mixture was filtered, concentrated under reduced pressure, and purified by preparative LC-MS (XBridge™ preparative C18, 30×10 mm 5 μm OBD™ column, flow rate 60 mL/min., eluting with a gradient of MeCN and water with NH4OH) to give the sub-title compound as a colorless gum (4.0 mg, 42%). LCMS calc. for C32H35F3N5O5 (M+H)+: m/z=626.3. Found: 626.1.

Provenance & Evidence