N-Acetyl-tyrosinyl-valinyl-4-allyloxyproline → N-(N-Acetyl-tyrosinyl-valinyl-(4(R)-allyloxyprolinyl))-3(S)-amino-4-oxobutanoic acid tert-butyl ester semicarbazone

HRID 862238Notes

Reaction equation

HRID 862238 reaction equation
[C:1]([NH:4][C@H:5]([C:14]([NH:16][C@H:17]([C:21]([N:23]1[CH2:30][CH:29]([O:31][CH2:32][CH:33]=[CH2:34])[CH2:28][C@H:24]1[C:25](O)=[O:26])=[O:22])[CH:18]([CH3:20])[CH3:19])=[O:15])[CH2:6][C:7]1[CH:12]=[CH:11][C:10]([OH:13])=[CH:9][CH:8]=1)(=[O:3])[CH3:2].[C:35]([O:39][C:40](=[N:46][NH:47][C:48]([NH2:50])=[O:49])[CH2:41][CH:42]([NH2:45])[CH:43]=[O:44])([CH3:38])([CH3:37])[CH3:36]>>[C:35]([O:39][C:40](=[N:46][NH:47][C:48]([NH2:50])=[O:49])[CH2:41][C@H:42]([NH:45][C:25](=[O:26])[C@@H:24]1[CH2:28][C@@H:29]([O:31][CH2:32][CH:33]=[CH2:34])[CH2:30][N:23]1[C:21](=[O:22])[C@H:17]([CH:18]([CH3:19])[CH3:20])[NH:16][C:14](=[O:15])[C@H:5]([CH2:6][C:7]1[CH:8]=[CH:9][C:10]([OH:13])=[CH:11][CH:12]=1)[NH:4][C:1](=[O:3])[CH3:2])[CH:43]=[O:44])([CH3:38])([CH3:36])[CH3:37]

Participants

3

Reactant 2

HCID 22881982N-Acetyl-tyrosinyl-valinyl-4-allyloxyprolineHCID 539854003-Amino-4-oxobutyric acid tert-butyl ester semicarbazone

Product 1

HCID 86671131N-(N-Acetyl-tyrosinyl-valinyl-(4(R)-allyloxyprolinyl))-3(S)-amino-4-oxobutanoic acid tert-butyl ester semicarbazoneYield 20%

Procedure

N-Acetyl-tyrosinyl-valinyl-4-allyloxyproline (420 mg, 0.88 mmol) and 3-amino-4-oxobutyric acid tert-butyl ester semicarbazone (184 mg, 0.8 mol, Graybill et al., Int. J. Protein Res., 44, pp. 173-82 (1994)) to give 100 mg (20%) of the title compound as a white amorphous solid: 1H NMR (CD3OD) δ 7.24-7.2 (1H, m), 7.04-6.97 (2H, d), 6.73-6.65 (2H, d), 5.98-5.86 (1H, m), 5.35-5.24 (1H, d), 5.17-5.12 (1H, m), 4.12-3.98 (2H, m), 3.72-3.67 (1H, m), 2.98-2.92 (3H, m), 2.38-2.32 (1H, m), 2.1-2.02 (2H, m), 1.92 (3H, s), 0.98-0.89 (6H, 2×d).

Sources & evidence

ORD record
ord-2d8591a24ba94cc180f8895c286101c7
Source dataset
uspto-grants-1998_02
Patent number
US05716929

Reaction notes

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