[C:1]([NH:4][C@H:5]1[C@@H:20]([O:21]C(=O)C)[C@H:19]([O:25]C(=O)C)[C@@H:18]([CH2:29][O:30]C(=O)C)[O:17][C@@H:6]1[S:7][CH2:8][CH:9]=[CH:10][C:11]1[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1)(=[O:3])[CH3:2].C[O-].[Na+]>CO>[C:1]([NH:4][C@H:5]1[C@@H:20]([OH:21])[C@H:19]([OH:25])[C@@H:18]([CH2:29][OH:30])[O:17][C@@H:6]1[S:7][CH2:8][CH:9]=[CH:10][C:11]1[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1)(=[O:3])[CH3:2]Compound 8 (120 mg) is deacetylated with sodium methoxide in methanol to give 9 (80 mg); m.p. 156°-157° C. (MeOH--EtOAc).
読み込み中…