C(=O)([O-])[O-].[Cs+].[Cs+].[CH:7]1([NH:10][C:11](=[O:38])[C:12]2[CH:17]=[CH:16][C:15]([CH3:18])=[C:14]([N:19]3[CH:24]=[CH:23][NH:22][CH:21]([N:25]4[CH2:29][CH2:28][CH2:27][CH:26]4[C:30]4[CH:35]=[CH:34][CH:33]=[CH:32][C:31]=4[OH:36])[C:20]3=[O:37])[CH:13]=2)[CH2:9][CH2:8]1.Cl[CH2:40][CH2:41][N:42]([CH3:53])[C:43](=[O:52])[O:44][CH2:45][C:46]1[CH:51]=[CH:50][CH:49]=[CH:48][CH:47]=1.C(Cl)Cl>C(#N)C.O>[CH:7]1([NH:10][C:11]([C:12]2[CH:17]=[CH:16][C:15]([CH3:18])=[C:14]([N:19]3[CH:24]=[CH:23][N:22]=[C:21]([N:25]4[CH2:29][CH2:28][CH2:27][CH:26]4[C:30]4[CH:35]=[CH:34][CH:33]=[CH:32][C:31]=4[O:36][CH2:40][CH2:41][N:42]([CH3:53])[C:43](=[O:52])[O:44][CH2:45][C:46]4[CH:51]=[CH:50][CH:49]=[CH:48][CH:47]=4)[C:20]3=[O:37])[CH:13]=2)=[O:38])[CH2:9][CH2:8]1Cesium carbonate (0.274 g) was added to a solution of N-cyclopropyl-3-{3-[2-(2-hydroxyphenyl)pyrrolidin-1-yl]-2-oxo-3,4-dihydropyrazin-1(2H)-yl}-4-methylbenzamide (Example 324a, 0.18 g) and benzyl 2-chloroethyl(methyl)carbamate (0.096 g) in acetonitrile (4 mL), and the reaction was heated at 90° C. for 72 h. DCM and water were added, and the organic layer was separated, dried (Na2SO4) and the solvent removed in is vacuo. Purification (SiO2 chromatography eluting with 30-50% EtOAc in DCM) gave the subtitle compound as an oil (0.122 g).
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