Phthalimide → 2-{2-[(4-{[3-chloro-4-(pyridin-2-ylmethoxy)phenyl]amino}-1H-pyrazolo[3,4-d]pyrimidin-3-yl)oxy]ethyl}-1H-isoindole-1,3(2H)-dione

関与物質

反応手順

2-[(4-{[3-chloro-4-(pyridin-2-ylmethoxy)phenyl]amino}-1H-pyrazolo[3,4-d]pyrimidin-3-yl)oxy]ethanol (prepared as described in Example 4/500 mg, 1.21 mmol), phthalimide (534 mg, 3.63 mmol) and triphenylphosphine were dissolved in a 1:1 mixture of THF and DMF (10 ml). Ditertbutyl azodicarboxylate (698 mg, 3.03 mmol) was added at 0° C. and mixture was stirred at room temperature for 4 hours. After evaporation, the crude mixture was purified by silica gel chromatography (6% methanol/CH2Cl2) to give the title compound (33% yield); NMR Spectrum: 4.09 (t, 2H), 4.50 (t, 2H), 5.31 (s, 2H), 7.31 (d, 1H), 7.38 (t, 1H), 7.60 (d, 1H), 7.77 (dd, 1H), 7.83-7.90 (m, 4H), 7.99 (s, 1H), 8.05 (d, 1H), 8.31 (s, 1H), 8.61 (d, 1H); Mass Spectrum: 542 (MH+).

情報源と証拠