Cl.[NH2:2][OH:3].C(=O)([O-])[O-].[Na+].[Na+].[C:10]([NH:13][C@H:14]1[C@H:22]([C@@H:23]([C@@H:25]([CH2:27][OH:28])[OH:26])[OH:24])[O:21][C:17]([C:18]([OH:20])=[O:19])=[CH:16][C@@H:15]1[NH:29][C:30]#[N:31])(=[O:12])[CH3:11]>CO>[C:10]([NH:13][C@H:14]1[C@H:22]([C@@H:23]([C@@H:25]([CH2:27][OH:28])[OH:26])[OH:24])[O:21][C:17]([C:18]([OH:20])=[O:19])=[CH:16][C@@H:15]1[NH:29][C:30]([NH2:31])=[N:2][OH:3])(=[O:12])[CH3:11]Hydroxylamine hydrochloride (1.1 g, 15.85 mmol)(dried under vacuum over P2O5) was dissolved in dried (over 3 A mol. sieves) methanol (20 ml) and sodium carbonate (0.835 g, 7.9 mmol) was added. This was stirred at 21° C. under N2 for 15 min., then solid was filtered off. To the filtrate was then added the product of Example 1, step (i) (500 mg, 1.585 mmol) and stirring under N2 at 21° C. continued for 16 hr. White solid was filtered off, air dried, then dried under high vacuum to give the title compound (Yield, 180 mg).
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