C(OC([NH:8][C@H:9]([C:13]([NH:15][C@@H:16]([CH2:38][C:39]1[CH:44]=[CH:43][CH:42]=[CH:41][CH:40]=1)[CH2:17][C@H:18]([OH:37])[C@@H:19]([NH:27][C:28]([O:30][CH2:31][C:32]1[S:36][CH:35]=[N:34][CH:33]=1)=[O:29])[CH2:20][C:21]1[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=1)=[O:14])[CH:10]([CH3:12])[CH3:11])=O)(C)(C)C.Cl>O1CCOCC1>[NH2:8][C@H:9]([C:13]([NH:15][C@@H:16]([CH2:38][C:39]1[CH:40]=[CH:41][CH:42]=[CH:43][CH:44]=1)[CH2:17][C@H:18]([OH:37])[C@@H:19]([NH:27][C:28]([O:30][CH2:31][C:32]1[S:36][CH:35]=[N:34][CH:33]=1)=[O:29])[CH2:20][C:21]1[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=1)=[O:14])[CH:10]([CH3:12])[CH3:11]A solution of 0.1 mmol of the resultant compound of Example 31 E was treated with 10 ml of 4N HCl in dioxane, stirred at 0° C. for 1 h, concentrated in vacuo, partitioned between chloroform and aqueous NaHCO3, dried over Na2SO4, and concentrated to provide the crude desired compound.
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