[Cl:1][C:2]1[CH:3]=[C:4]2[C:8](=[CH:9][CH:10]=1)[N:7]([S:11]([C:14]1[CH:19]=[CH:18][C:17]([N+:20]([O-])=O)=[CH:16][C:15]=1[O:23][CH3:24])(=[O:13])=[O:12])[C:6](=[O:25])[C:5]2([CH2:28][CH:29]1[CH2:34][CH2:33][CH2:32][CH2:31][CH2:30]1)[NH:26][CH3:27].CO>[Ni].C1COCC1>[NH2:20][C:17]1[CH:18]=[CH:19][C:14]([S:11]([N:7]2[C:8]3[C:4](=[CH:3][C:2]([Cl:1])=[CH:10][CH:9]=3)[C:5]([CH2:28][CH:29]3[CH2:34][CH2:33][CH2:32][CH2:31][CH2:30]3)([NH:26][CH3:27])[C:6]2=[O:25])(=[O:12])=[O:13])=[C:15]([O:23][CH3:24])[CH:16]=1A mixture of 1.2 g of the compound obtained in EXAMPLE 102, 3 g of Raney® nickel, 30 ml of MeOH and 40 ml of THF is hydrogenated at atmospheric pressure and at RT. After 40 minutes, the catalyst is filtered off on Celite® and the filtrate is evaporated under vacuum. The residue is chromatographed on silica using DCM and then a DCM/AcOEt mixture (75/25; v/v) as the eluent to give 0.6 g of the expected product, which is used as such in the next step.
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