C([O:4][CH2:5][C:6]([NH:8][C:9]1[N:10]=[C:11]2[CH:16]=[CH:15][C:14]([O:17][C:18]3[CH:23]=[CH:22][CH:21]=[C:20]([NH:24][C:25](=[O:37])[C:26]4[CH:31]=[CH:30][CH:29]=[C:28]([C:32]5([C:35]#[N:36])[CH2:34][CH2:33]5)[CH:27]=4)[CH:19]=3)=[N:13][N:12]2[CH:38]=1)=[O:7])(=O)C.[OH-].[Na+]>CO>[C:35]([C:32]1([C:28]2[CH:27]=[C:26]([CH:31]=[CH:30][CH:29]=2)[C:25]([NH:24][C:20]2[CH:21]=[CH:22][CH:23]=[C:18]([O:17][C:14]3[CH:15]=[CH:16][C:11]4[N:12]([CH:38]=[C:9]([NH:8][C:6](=[O:7])[CH2:5][OH:4])[N:10]=4)[N:13]=3)[CH:19]=2)=[O:37])[CH2:34][CH2:33]1)#[N:36]Using 2-{[6-(3-{[3-(1-cyanocyclopropyl)benzoyl]amino}phenoxy)imidazo[1,2-b]pyridazin-2-yl]amino}-2-oxoethyl acetate (130 mg, 0.254 mmol), 1N aqueous sodium hydroxide solution (1.5 mL) and methanol (3 mL) as starting materials and in the same manner as in Example 396, the title compound (59 mg, 50%) was obtained as a pale-yellow powder.
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