Gallic Acid → N-[(1S)-1-(tert-butoxymethyl)-2-[2-(3,4-dihydroxyphenyl)ethylamino]-2-oxo-ethyl]-3,4,5-trihydroxy-benzamide
Reaktionsgleichung
C1C2C(CO[C:16]([NH:18][C@H:19]([C:26]([NH:28][CH2:29][CH2:30][C:31]3[CH:38]=[CH:37][C:35]([OH:36])=[C:33]([OH:34])[CH:32]=3)=[O:27])[CH2:20][O:21][C:22]([CH3:25])([CH3:24])[CH3:23])=[O:17])C3C(=CC=CC=3)C=2C=CC=1.C(O)(=O)[C:40]1[CH:48]=[C:46]([OH:47])[C:44]([OH:45])=[C:42]([OH:43])[CH:41]=1>>[OH:43][C:42]1[CH:41]=[C:40]([CH:48]=[C:46]([OH:47])[C:44]=1[OH:45])[C:16]([NH:18][C@H:19]([C:26]([NH:28][CH2:29][CH2:30][C:31]1[CH:38]=[CH:37][C:35]([OH:36])=[C:33]([OH:34])[CH:32]=1)=[O:27])[CH2:20][O:21][C:22]([CH3:23])([CH3:24])[CH3:25])=[O:17]Komponenten
3
Versuchsvorschrift
The title compound was prepared from N-[Nα-(9-fluorenylmethoxycarbonyl)-O-tert-butyl-L-seryl]dopamine (1.16 g, 2.24 mmol, example 42, step A) as described for example 42 (step B) using gallic acid (571 mg, 3.36 mmol) instead of caffeic acid. The crude material was purified by flash chromatography using successively 30%, 40% and 70% EtOAc/CH2Cl2/1% AcOH as the eluent. The title compound was obtained as a white powder (300 mg, 30%).