1,3-二甲基-3-(((2-硝基苯基)磺酰基)甲基)吲哚啉-2-酮/1,3-Dimethyl-3-(((2-nitrophenyl)sulfonyl)methyl)indolin-2-one/ 19

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^{mp=142-144 ^oC；1}H NMR (400 MHz, CDCl₃) δ 8.36 (d, J = 7.8 Hz, 1H), 8.08 (s, 1H), 7.86 (d, J = 7.7 Hz, 1H), 7.64 – 7.60 (m, 1H), 7.24 – 7.20 (m, 1H), 6.88 (d, J = 7.8 Hz, 1H), 6.79 – 6.71 (dt, J = 14.8, 7.3 Hz, 2H), 4.00 (d, J = 14.8 Hz, 1H), 3.75 (d, J = 14.8 Hz, 1H), 3.24 (s, 3H), 1.39 (s, 3H); ¹³C NMR (100 MHz, CDCl₃) δ: 25.3, 26.6, 45.4, 62.1, 108.8, 122.3, 123.3, 127.8, 128.8, 129.0, 130.3, 133.1, 141.9, 143.5, 177.1; HRMS (EI) m/z calcd for C₁₇H₁₆N₂O₅S [M⁺]: 360.0780; found, 360.0770.