Trifluoroacetic acid → HCID 86685764, Verbindung
Reaktionsgleichung
[CH3:1][N:2]1[CH2:33][CH2:32][CH2:31][C@:3]1([CH3:34])[C:4]([NH:6][C@H:7]([C:11]([N:13]([C@@H:15]([C@@H:27]([CH3:30])[CH2:28][CH3:29])[C@H:16]([O:25][CH3:26])[CH2:17][C:18]([O:20]C(C)(C)C)=[O:19])[CH3:14])=[O:12])[CH:8]([CH3:10])[CH3:9])=[O:5].FC(F)(F)C(O)=O>ClCCl>[CH3:1][N:2]1[CH2:33][CH2:32][CH2:31][C@:3]1([CH3:34])[C:4]([NH:6][C@H:7]([C:11]([N:13]([C@@H:15]([C@@H:27]([CH3:30])[CH2:28][CH3:29])[C@H:16]([O:25][CH3:26])[CH2:17][C:18]([OH:20])=[O:19])[CH3:14])=[O:12])[CH:8]([CH3:10])[CH3:9])=[O:5]Komponenten
4
Versuchsvorschrift
According to the general procedure B, from #195 (11.1 g, 21.6 mmol, 1 eq.), dichloromethane (100 mL) and trifluoroacetic acid (40 mL) was synthesized the crude desired material, to obtain #196 (10.1 g, quantitative yield) which was used in the next step without further purification. LC-MS (Protocol Z): m/z 428.5 [M+H+], retention time=0.9 minutes.