Diisopropylethylamine → (S)-tert-Butyl 3-(((9H-fluoren-9-yl)methoxy)carbonylamino)-4-(((S)-1,1-diethoxypropan-2-yl)(quinolin-8-ylmethyl)amino)-4-oxobutanoate

HRID 718909Notes

Reaction equation

HRID 718909 reaction equation
[CH2:1]([O:3][CH:4]([O:19][CH2:20][CH3:21])[C@@H:5]([NH:7][CH2:8][C:9]1[CH:10]=[CH:11][CH:12]=[C:13]2[C:18]=1[N:17]=[CH:16][CH:15]=[CH:14]2)[CH3:6])[CH3:2].[NH:22]([C:35]([O:37][CH2:38][CH:39]1[C:51]2[C:46](=[CH:47][CH:48]=[CH:49][CH:50]=2)[C:45]2[C:40]1=[CH:41][CH:42]=[CH:43][CH:44]=2)=[O:36])[C@H:23]([C:32](O)=[O:33])[CH2:24][C:25](=[O:31])[O:26][C:27]([CH3:30])([CH3:29])[CH3:28].CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.CCN(C(C)C)C(C)C>CN(C=O)C.CC(=O)OCC.O>[CH:41]1[C:40]2[CH:39]([CH2:38][O:37][C:35]([NH:22][C@H:23]([C:32]([N:7]([C@@H:5]([CH3:6])[CH:4]([O:19][CH2:20][CH3:21])[O:3][CH2:1][CH3:2])[CH2:8][C:9]3[CH:10]=[CH:11][CH:12]=[C:13]4[C:18]=3[N:17]=[CH:16][CH:15]=[CH:14]4)=[O:33])[CH2:24][C:25]([O:26][C:27]([CH3:28])([CH3:30])[CH3:29])=[O:31])=[O:36])[C:51]3[C:46](=[CH:47][CH:48]=[CH:49][CH:50]=3)[C:45]=2[CH:44]=[CH:43][CH:42]=1

Participants

8

Reactant 4

HCID 81531DiisopropylethylamineHCID 2724635Fmoc-L-Asp(OtBu)-OHHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 67074994(S)-1,1-diethoxy-N-(quinolin-8-ylmethyl)propan-2-amine

Product 1

HCID 67088264(S)-tert-Butyl 3-(((9H-fluoren-9-yl)methoxy)carbonylamino)-4-(((S)-1,1-diethoxypropan-2-yl)(quinolin-8-ylmethyl)amino)-4-oxobutanoateYield 67.1%

Reagents, catalysts & solvents 3

HCID 962WaterSolventHCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

According to the procedure described in the synthesis method of Compound III-1, (S)-1,1-diethoxy-N-(quinolin-8-ylmethyl)propan-2-amine (Compound IX-3) 13.0 g (45 mmol) and Fmoc-Asp(tBu)-OH 24.2 g (58.8 mmol) were dissolved in DMF (200 ml). HATU (25.6 g, 67.5 mmol) and DIEA (8.7 g, 67.5 mmol) were added at room temperature. The mixture was stirred overnight at room temperature. The mixture was poured into water (800 ml). The solution was extracted with EA (300 ml×3). The combined extracts were dried over Na2SO4 and then filtered. The solvent was removed in vacuo. The residue was purified by column chromatography on silica gel with PE:EA=30:1 to 5:1 to give the title compound 20.6 g, (yield 67%).

Workup

  1. extractionThe solution was extracted with EA (300 ml×3)
  2. dry with materialThe combined extracts were dried over Na2SO4
  3. filtrationfiltered
  4. customThe solvent was removed in vacuo
  5. customThe residue was purified by column chromatography on silica gel with PE

Sources & evidence

ORD record
ord-7f0556e4e3d44769aebf748e07b868a6
Source dataset
uspto-grants-2015_11
Patent number
US09193734B2

Reaction notes

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