[N:1]1([C@@H:7]2[CH2:10][C@H:9]([C:11]3[S:12][C:13]4[CH:19]=[C:18]([NH2:20])[CH:17]=[CH:16][C:14]=4[N:15]=3)[CH2:8]2)[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.C(N(CC)CC)C.[C:28](Cl)(=[O:30])[CH3:29]>ClCCl.O>[N:1]1([C@@H:7]2[CH2:10][C@H:9]([C:11]3[S:12][C:13]4[CH:19]=[C:18]([NH:20][C:28](=[O:30])[CH3:29])[CH:17]=[CH:16][C:14]=4[N:15]=3)[CH2:8]2)[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1The product of Example 101A (20 mg, 0.070 mmole) was dissolved in anhydrous dichloromethane (1.5 mL). To the solution was added triethylamine (35.6 mg, 49 μL, 0.35 mmole) and acetyl chloride (10 μL, 0.14 mmole). The mixture was stirred at room temperature overnight then diluted with water. The aqueous layer was extracted three times with dichloromethane and the combined organic layers were concentrated to give the crude product. The crude product was purified by column chromatography (0.5% ammonium hydroxide and 5% methanol in dichloromethane) to give the title compound. 1H NMR (500 MHz, CDCl3) δ ppm 8.39 (d, J=2.14 Hz, 1H) 7.84 (d, J=8.54 Hz, 1H) 7.37 (s, 1H) 7.22 (dd, J=8.85, 2.14 Hz, 1H) 3.48-3.59 (m, 1H) 2.72-2.83 (m, 1H) 2.60-2.70 (m, 2H) 2.24-2.39 (m, 6H) 2.21 (s, 3H) 1.54-1.64 (m, 4H) 1.40-1.51 (m, 2H). MS: (M+H)+=330.
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