[CH3:1][O:2][C:3]1[CH:4]=[CH:5][C:6]2[O:11][CH2:10][C:9](=[O:12])[N:8]([CH2:13][CH2:14][C@H:15]3[CH2:20][CH2:19][C@H:18]([NH:21]C(=O)OC(C)(C)C)[CH2:17][CH2:16]3)[C:7]=2[CH:29]=1.NC1CCN(CCN2C3C(=CC=C(C#N)C=3)C=CC2=O)CC1>>[NH2:21][C@H:18]1[CH2:19][CH2:20][C@H:15]([CH2:14][CH2:13][N:8]2[C:7]3[CH:29]=[C:3]([O:2][CH3:1])[CH:4]=[CH:5][C:6]=3[O:11][CH2:10][C:9]2=[O:12])[CH2:16][CH2:17]1tert-Butyl {trans-4-[2-(6-methoxy-3-oxo-2,3-dihydro-4H-1,4-benzoxazin-4-yl)ethyl]cyclohexyl}carbamate (Intermediate 75) was reacted as described for Intermediate 14. The crude trifluoro acetate of the title compound was used without further purification for the next step (quantitative yield).
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