[CH:1]1([C:4]2[N:5]=[CH:6][C:7]([C:15]([OH:17])=O)=[N:8][C:9]=2[O:10][CH2:11][CH:12]2[CH2:14][CH2:13]2)[CH2:3][CH2:2]1.[NH2:18][C:19]([CH3:24])([CH2:22][CH3:23])[CH2:20][OH:21]>>[OH:21][CH2:20][C:19]([NH:18][C:15]([C:7]1[CH:6]=[N:5][C:4]([CH:1]2[CH2:2][CH2:3]2)=[C:9]([O:10][CH2:11][CH:12]2[CH2:13][CH2:14]2)[N:8]=1)=[O:17])([CH3:24])[CH2:22][CH3:23]The title compound was synthesized in analogy to Example 8e, using 5-cyclopropyl-6-cyclopropylmethoxy-pyrazine-2-carboxylic acid (Example 10 g, 100 mg, 0.43 mmol) and 2-amino-2-methyl-1-butanol (CAN 10196-30-2, 64.74 mg, 0.64 mmol) as starting materials, and isolated (12 mg, 8.79%) as off white solid, LC-MS (UV peak area, ESI) 100%, 320.4 (M+H).
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