4-Methylmorpholine → 1-(4-(Thiazol-5-yl)-phenyl)-4(S)-hydroxy-2-N-(N-methoxycarbonyl-(L)-tert-leucyl)amino-5(S)-N-(N-methoxycarbonyl-(L)-iso-leucyl)amino-6-phenyl-2-azahexane

HRID 1458447Notes

Reaction equation

HRID 1458447 reaction equation
[S:1]1[C:5]([C:6]2[CH:11]=[CH:10][C:9]([CH2:12][N:13]([NH2:38])[CH2:14][C@H:15]([OH:37])[C@@H:16]([NH:24][C:25](=[O:36])[C@H:26]([C@H:32]([CH2:34][CH3:35])[CH3:33])[NH:27][C:28]([O:30][CH3:31])=[O:29])[CH2:17][C:18]3[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=3)=[CH:8][CH:7]=2)=[CH:4][N:3]=[CH:2]1.CN1CCOCC1.[CH3:46][O:47][C:48]([NH:50][C@H:51]([C:56](O)=[O:57])[C:52]([CH3:55])([CH3:54])[CH3:53])=[O:49].[B-](F)(F)(F)F.CN(C(ON1C(=O)C=CC=C1)=[N+](C)C)C>CN(C=O)C.C(OCC)(=O)C>[S:1]1[C:5]([C:6]2[CH:7]=[CH:8][C:9]([CH2:12][N:13]([NH:38][C:56](=[O:57])[C@H:51]([C:52]([CH3:54])([CH3:53])[CH3:55])[NH:50][C:48]([O:47][CH3:46])=[O:49])[CH2:14][C@H:15]([OH:37])[C@@H:16]([NH:24][C:25](=[O:36])[C@H:26]([C@H:32]([CH2:34][CH3:35])[CH3:33])[NH:27][C:28]([O:30][CH3:31])=[O:29])[CH2:17][C:18]3[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=3)=[CH:10][CH:11]=2)=[CH:4][N:3]=[CH:2]1

Participants

7

Reactant 4

HCID 79724-MethylmorpholineHCID 2733204O-(2-Oxo-1(2H)-pyridyl)-N,N,N',N'-tetramethyluronium TetrafluoroborateHCID 11263950N-(Methoxycarbonyl)-L-tert-leucineHCID 665780011-[4-(thiazol-5-yl)-phenyl]-4(S)-hydroxy-2-amino-5 (S)-N-(N-methoxycarbonyl-(L)-iso-leucyl)amino-6-phenyl-2-azahexane

Product 1

HCID 4679561-(4-(Thiazol-5-yl)-phenyl)-4(S)-hydroxy-2-N-(N-methoxycarbonyl-(L)-tert-leucyl)amino-5(S)-N-(N-methoxycarbonyl-(L)-iso-leucyl)amino-6-phenyl-2-azahexane

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolvent2×HCID 8857Ethyl AcetateSolvent

Procedure

Under argon, 0.5 mmol of 1-[4-(thiazol-5-yl)-phenyl]-4(S)-hydroxy-2-amino-5(S)-N-(N-methoxycarbonyl-(L)-iso-leucyl)amino-6-phenyl-2-azahexane and 165 μl (1.5 mmol) of NMM in 4.8 ml of DMF are added to 113.5 mg (0.60 mmol) of N-methoxycarbonyl-(L)-tert-leucine (Example 2e) and 149 mg (0.50 mmol) of TPTU in 2.5 ml of DMF and the mixture is stirred at room temperature for 14 hours. Ice-water and and ethyl acetate are added; the aqueous phase is separated off and extracted with ethyl acetate. The organic phases are washed 2× with water and brine, dried (Na2SO4) and concentrated by evaporation. Column chromatography (SiO2 ; ethyl acetate) and crystallisation from ethyl acetate/ether/hexane yield the title compound: TLC: Rf =0.42 (methylene chloride/ethanol 10:1); HPLC20-100 : tRet =14.8; FAB MS (M+H)+ =711.

Workup

  1. customthe aqueous phase is separated off
  2. extractionextracted with ethyl acetate
  3. washThe organic phases are washed 2× with water and brine
  4. dry with materialdried (Na2SO4)
  5. concentrationconcentrated by evaporation
  6. customColumn chromatography (SiO2 ; ethyl acetate) and crystallisation from ethyl acetate/ether/hexane

Sources & evidence

ORD record
ord-7889a046048c47c0b363d99df8e68540
Source dataset
uspto-grants-1998_12
Patent number
US05849911

Reaction notes

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