Cl[C:2]1[N:3]=[C:4]([N:18]2[CH2:23][CH2:22][O:21][CH2:20][C@@H:19]2[CH3:24])[C:5]2[CH2:10][N:9](C(OC(C)(C)C)=O)[CH2:8][C:6]=2[N:7]=1.[CH3:25][NH:26][C:27]([NH:29][C:30]1[CH:35]=[CH:34][C:33](B2OC(C)(C)C(C)(C)O2)=[CH:32][CH:31]=1)=[O:28]>>[CH3:25][NH:26][C:27]([NH:29][C:30]1[CH:35]=[CH:34][C:33]([C:2]2[N:3]=[C:4]([N:18]3[CH2:23][CH2:22][O:21][CH2:20][C@@H:19]3[CH3:24])[C:5]3[CH2:10][NH:9][CH2:8][C:6]=3[N:7]=2)=[CH:32][CH:31]=1)=[O:28]Method as described for example 3 using intermediate 1 and 1-methyl-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)urea as starting materials. The boc protected intermediate was purified by prep HPLC (high pH).
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