Tert-butoxycarbonylalanine → (1S,3S)-1-((1S)-1-{[(2S)-2-(3-benzyl-2-oxoimidazolidin-1-yl)-3,3-dimethylbutanoyl]amino}-2-phenylethyl)-3-{[N-(methoxycarbonyl)-3-methyl-L-valyl]amino}-4-(4-pyridin-2-ylphenyl)butyl N-(tert-butoxycarbonyl)-L-alaninate

HRID 1174409Notes

Reaction equation

HRID 1174409 reaction equation
[CH2:1]([N:8]1[CH2:12][CH2:11][N:10]([C@@H:13]([C:55]([CH3:58])([CH3:57])[CH3:56])[C:14]([NH:16][C@@H:17]([CH2:48][C:49]2[CH:54]=[CH:53][CH:52]=[CH:51][CH:50]=2)[C@@H:18]([OH:47])[CH2:19][C@@H:20]([NH:34][C:35]([C@@H:37]([NH:42][C:43](=[O:46])[O:44][CH3:45])[C:38]([CH3:41])([CH3:40])[CH3:39])=[O:36])[CH2:21][C:22]2[CH:27]=[CH:26][C:25]([C:28]3[CH:33]=[CH:32][CH:31]=[CH:30][N:29]=3)=[CH:24][CH:23]=2)=[O:15])[C:9]1=[O:59])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[C:60]([O:64][C:65]([NH:67][C@H:68]([C:70](O)=[O:71])[CH3:69])=[O:66])([CH3:63])([CH3:62])[CH3:61].Cl.CN(C)CCCN=C=NCC>CN(C)C1C=CN=CC=1.CN(C)C=O>[C:60]([O:64][C:65]([NH:67][C@H:68]([C:70]([O:47][C@H:18]([C@@H:17]([NH:16][C:14](=[O:15])[C@@H:13]([N:10]1[CH2:11][CH2:12][N:8]([CH2:1][C:2]2[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=2)[C:9]1=[O:59])[C:55]([CH3:58])([CH3:57])[CH3:56])[CH2:48][C:49]1[CH:54]=[CH:53][CH:52]=[CH:51][CH:50]=1)[CH2:19][C@@H:20]([NH:34][C:35](=[O:36])[C@H:37]([C:38]([CH3:41])([CH3:40])[CH3:39])[NH:42][C:43]([O:44][CH3:45])=[O:46])[CH2:21][C:22]1[CH:27]=[CH:26][C:25]([C:28]2[CH:33]=[CH:32][CH:31]=[CH:30][N:29]=2)=[CH:24][CH:23]=1)=[O:71])[CH3:69])=[O:66])([CH3:62])([CH3:63])[CH3:61]

Participants

6

Reactant 3

HCID 85082Tert-butoxycarbonylalanine2×HCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochloride2×HCID 11274374A-792611

Product 1

HCID 86599589(1S,3S)-1-((1S)-1-{[(2S)-2-(3-benzyl-2-oxoimidazolidin-1-yl)-3,3-dimethylbutanoyl]amino}-2-phenylethyl)-3-{[N-(methoxycarbonyl)-3-methyl-L-valyl]amino}-4-(4-pyridin-2-ylphenyl)butyl N-(tert-butoxycarbonyl)-L-alaninateYield 82.6%

Reagents, catalysts & solvents 2

HCID 142844-(Dimethylamino)pyridineCatalystHCID 6228DimethylformamideSolvent

Procedure

To a solution containing the compound of Example 111 (0.100 g, 0.124 mmol), N-(tert-butoxycarbonyl) L-alanine (0.028 g, 0.147 mmol)), and 4(dimethylamino)pyridine (0.018 g, 0.147 mmol) in N,N-dimethylformamide (1.0 mL) was added 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDAC) (0.029 g, 0.151 mmol) and the mixture was stirred at room temperature for 2 hours. Two subsequent additions of N-(tert-butoxycarbonyl) L-alanine (0.028 g) and 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDAC) (0.029 g) were made at two hour intervals. The solvent was evaporated and the reaction mixture was partitioned between ethyl acetate and aqueous NaHCO3. The organic layer was washed with brine, dried over MgSO4, filtered and evaporated. The residue was purified by chromatography on silica gel, eluting with a gradient starting with chloroform and ending with 66% ethyl acetate in chloroform, to give the title compound (0.100 g, 82%).

Workup

  1. customThe solvent was evaporated
  2. customthe reaction mixture was partitioned between ethyl acetate and aqueous NaHCO3
  3. washThe organic layer was washed with brine
  4. dry with materialdried over MgSO4
  5. filtrationfiltered
  6. customevaporated
  7. customThe residue was purified by chromatography on silica gel
  8. washeluting with a gradient

Sources & evidence

ORD record
ord-1c35c8944eb74f2abf94408bb3af9a7a
Source dataset
uspto-grants-2010_11
Patent number
US07834043B2

Reaction notes

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