C1C2C(COC([NH:18][C@H:19]([C:27]([NH:29][CH2:30][C:31]([OH:33])=[O:32])=[O:28])[CH2:20][C:21]3[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=3)=O)C3C(=CC=CC=3)C=2C=CC=1.N1CCCCC1>CN(C=O)C>[NH2:18][C@H:19]([C:27]([NH:29][CH2:30][C:31]([OH:33])=[O:32])=[O:28])[CH2:20][C:21]1[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=1Fmoc-protected dipeptide 72 (500 mg, 1.00 mmol) was treated with a 5% v/v solution of piperidine in DMF (5 mL). After stirring for 1 h, the reaction mixture was concentrated to dryness. The crude material was used for the next step without purification.
Wird geladen…