[CH2:1]([O:4][N:5]([C@H:18]1[CH2:23][N:22](C(OC(C)(C)C)=O)[C@H:21]([C:31](=[O:33])[NH2:32])[CH:20]=[C:19]1[CH:34]([CH3:36])[CH3:35])[S:6]([C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][C:10]=1[N+:15]([O-:17])=[O:16])(=[O:8])=[O:7])[CH:2]=[CH2:3].C(ON([C@H]1CN[C@H](C(N)=O)C=C1C)S(C1C=CC=CC=1[N+]([O-])=O)(=O)=O)C=C>>[CH2:1]([O:4][N:5]([C@H:18]1[CH2:23][NH:22][C@H:21]([C:31]([NH2:32])=[O:33])[CH:20]=[C:19]1[CH:34]([CH3:36])[CH3:35])[S:6]([C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][C:10]=1[N+:15]([O-:17])=[O:16])(=[O:8])=[O:7])[CH:2]=[CH2:3]The title compound was prepared from (2S,5R)-tert-butyl 5-(N-(allyloxy)-2-nitrophenylsulfonamido)-2-carbamoyl-4-isopropyl-5,6-dihydropyridine-1(2H)-carboxylate (Intermediate 40, 0.427 g, 0.81 mmol) following the procedure described for Intermediate 21. The desired product was obtained as yellow foam (0.247 g, 71%).
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