1-Hydroxybenzotriazole → 3-[4-(N-BOC-Piperidin-4-yl)butyloxy]isoxazole-5-carbonyl-2(S)-phenylsulfonylamino-beta-alanine methyl ester

Reaction equation

[C:1]([N:8]1[CH2:13][CH2:12][CH:11]([CH2:14][CH2:15][CH2:16][CH2:17][O:18][C:19]2[CH:23]=[C:22]([C:24]([OH:26])=O)[O:21][N:20]=2)[CH2:10][CH2:9]1)([O:3][C:4]([CH3:7])([CH3:6])[CH3:5])=[O:2].Cl.[C:28]1([S:34]([NH:37][C@@H:38]([CH2:43][NH2:44])[C:39]([O:41][CH3:42])=[O:40])(=[O:36])=[O:35])[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=1.C1C=CC2N(O)N=NC=2C=1.CCN(C(C)C)C(C)C>C(Cl)CCl.CN(C=O)C>[CH3:42][O:41][C:39](=[O:40])[C@@H:38]([NH:37][S:34]([C:28]1[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=1)(=[O:36])=[O:35])[CH2:43][NH:44][C:24]([C:22]1[O:21][N:20]=[C:19]([O:18][CH2:17][CH2:16][CH2:15][CH2:14][CH:11]2[CH2:10][CH2:9][N:8]([C:1]([O:3][C:4]([CH3:7])([CH3:6])[CH3:5])=[O:2])[CH2:13][CH2:12]2)[CH:23]=1)=[O:26]