Acetic Acid → t-Butyl 4'-[[3(R)-[[3-amino-3-methyl-l-oxobutyl]amino]-2,3,4,5-tetrahydro-2-oxo-1H-1-benzazepin-1-yl]methyl][1,1'-biphenyl]-2-carboxylate acetate

HRID 1755791Notes

Reaction equation

HRID 1755791 reaction equation
C(OC([NH:11][C:12]([CH3:50])([CH3:49])[CH2:13][C:14]([NH:16][C@@H:17]1[CH2:23][CH2:22][C:21]2[CH:24]=[CH:25][CH:26]=[CH:27][C:20]=2[N:19]([CH2:28][C:29]2[CH:34]=[CH:33][C:32]([C:35]3[C:36]([C:41]([O:43][C:44]([CH3:47])([CH3:46])[CH3:45])=[O:42])=[CH:37][CH:38]=[CH:39][CH:40]=3)=[CH:31][CH:30]=2)[C:18]1=[O:48])=[O:15])=O)C1C=CC=CC=1.C(O)(=O)C>CO.[OH-].[Pd+2].[OH-]>[C:41]([OH:43])(=[O:42])[CH3:36].[NH2:11][C:12]([CH3:50])([CH3:49])[CH2:13][C:14]([NH:16][C@@H:17]1[CH2:23][CH2:22][C:21]2[CH:24]=[CH:25][CH:26]=[CH:27][C:20]=2[N:19]([CH2:28][C:29]2[CH:30]=[CH:31][C:32]([C:35]3[C:36]([C:41]([O:43][C:44]([CH3:46])([CH3:45])[CH3:47])=[O:42])=[CH:37][CH:38]=[CH:39][CH:40]=3)=[CH:33][CH:34]=2)[C:18]1=[O:48])=[O:15]

Participants

5

Reactant 2

HCID 176Acetic AcidHCID 228551634'-[[2,3,4,5-Tetrahydro-3(R)-[[3-methyl-1-oxo-3-[[(benzyloxy)carbonyl]amino] butyl]amino]-2-oxo-1H-1-benzazepin-1-yl]methyl]-[1,1'-biphenyl]-2-carboxylic acid 1,1-dimethylethyl ester

Product 1

HCID 67788487t-Butyl 4'-[[3(R)-[[3-amino-3-methyl-l-oxobutyl]amino]-2,3,4,5-tetrahydro-2-oxo-1H-1-benzazepin-1-yl]methyl][1,1'-biphenyl]-2-carboxylate acetateYield 193.7%

Reagents, catalysts & solvents 2

HCID 9942167Palladium hydroxideCatalystHCID 887MethanolSolvent

Procedure

To a solution of 400 mg (0.592 mmol) of t-butyl 4'-[[3(R)[[3-benzyloxycarbonylamino-3-methyl-1-oxobutyl]amino]-2,3,4,5-tetrahydro-2-oxo-1H-1-benzazepin-1-yl]methyl][1,1'-biphenyl]-2-carboxylate (prepared according to the procedure of Fisher et al, U.S. Pat. No. 5,206,235) in 10 mL of methanol was added 0.034 mL (0.59 mmol) of acetic acid and 80 mg (20% w/w) palladium hydroxide. The resulting mixture was stirred under a hydrogen atmosphere for 4 hours. Catalyst was removed by filtration through Celite and the solvent removed under vacuum to afford 345 mg (97%) of the product as a white solid. 1H NMR (400 MHz, CD3OD): δ1.17 (s, 9H), 1.37 (s, 3H), 1.41 (s, 3H), 1.92 (s, 3H), 2.17 (m, 1H), 2.35 (m, 1H), 2.45-2.75 (m, 4H), 4.41 (dd; 12, 8 Hz; 1H), 4.93 (d, 15 Hz, 1H), 5.37 (d, 16 Hz, 1H), 7.12-7.52 (m, 11H), 7.66 (d, 8 Hz, 1H). FAB-MS: calculated for C33H39N3O4 541; found 542 (M+H,100%).

Workup

  1. customCatalyst was removed by filtration through Celite
  2. customthe solvent removed under vacuum

Sources & evidence

ORD record
ord-b3170d1a9ee44ca6ae5001a0d5e1a95a
Source dataset
uspto-grants-1995_08
Patent number
US05438136

Reaction notes

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