C([O:5][C:6](=[O:37])[CH2:7][O:8][C:9]1[CH:14]=[CH:13][CH:12]=[C:11]([CH:15]([N:23]([C:25](=[O:36])[CH2:26][C:27]2[O:28][C:29]3[CH:35]=[CH:34][CH:33]=[CH:32][C:30]=3[CH:31]=2)[CH3:24])[CH2:16][N:17]2[CH2:21][CH2:20][CH:19]([OH:22])[CH2:18]2)[CH:10]=1)(C)(C)C.Cl>ClCCl>[O:28]1[C:29]2[CH:35]=[CH:34][CH:33]=[CH:32][C:30]=2[CH:31]=[C:27]1[CH2:26][C:25]([N:23]([CH3:24])[CH:15]([C:11]1[CH:10]=[C:9]([CH:14]=[CH:13][CH:12]=1)[O:8][CH2:7][C:6]([OH:37])=[O:5])[CH2:16][N:17]1[CH2:21][CH2:20][CH:19]([OH:22])[CH2:18]1)=[O:36]To a solution of Example 32 (0.824 g, 1.62 mmol) in dichloromethane (15 mL) was added HCl (3 mL of 4 M solution in dioxan). After stirring for 22 hours, all volatiles were removed in vacuo, and the resulting solid was washed with ethyl acetate (twice). The remaining solid was dissolved in acetonitrile and treated with diethyl ether. The precipitate was allowed to settle and the supernatant discarded. The solid was dried to give the product as an off-white solid.
Wird geladen…