Dicyclohexylcarbodiimide → 13-(S)-[[(9H-Fluoren-9-yl)methoxycarbonyl]amino]-3-(R)-methyl-12-oxo-14-(phenylmethoxy)-6-(phenylmethyl)-2,6,11-triazatetradecanoic acid, 1,1-dimethylethyl ester

HRID 1418623Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1418623
[CH:1]1[C:13]2[CH:12]([CH2:14][O:15][C:16]([NH:18][C@H:19]([C:29](O)=[O:30])[CH2:20][O:21][CH2:22][C:23]3[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=3)=[O:17])[C:11]3[C:6](=[CH:7][CH:8]=[CH:9][CH:10]=3)[C:5]=2[CH:4]=[CH:3][CH:2]=1.C1C=CC2N(O)N=NC=2C=1.C1CCC(N=C=NC2CCCCC2)CC1.[NH2:57][CH2:58][CH2:59][CH2:60][CH2:61][N:62]([CH2:75][C:76]1[CH:81]=[CH:80][CH:79]=[CH:78][CH:77]=1)[CH2:63][CH2:64][C@H:65]([NH:67][C:68](=[O:74])[O:69][C:70]([CH3:73])([CH3:72])[CH3:71])[CH3:66]>ClCCl.C(OCC)(=O)C>[CH:1]1[C:13]2[CH:12]([CH2:14][O:15][C:16]([NH:18][C@@H:19]([CH2:20][O:21][CH2:22][C:23]3[CH:24]=[CH:25][CH:26]=[CH:27][CH:28]=3)[C:29](=[O:30])[NH:57][CH2:58][CH2:59][CH2:60][CH2:61][N:62]([CH2:75][C:76]3[CH:77]=[CH:78][CH:79]=[CH:80][CH:81]=3)[CH2:63][CH2:64][C@@H:65]([CH3:66])[NH:67][C:68]([O:69][C:70]([CH3:73])([CH3:71])[CH3:72])=[O:74])=[O:17])[C:11]3[C:6](=[CH:7][CH:8]=[CH:9][CH:10]=3)[C:5]=2[CH:4]=[CH:3][CH:2]=1

Komponenten

7

Edukt 4

HCID 10868DicyclohexylcarbodiimideHCID 757711-HydroxybenzotriazoleHCID 7017914Fmoc-O-benzyl-L-serineHCID 10689168N-[3-[(4-aminobutyl)(phenylmethyl)amino]-1-(R)-methylpropyl]carbamic acid, 1, 1-dimethylethyl ester

Produkt 1

HCID 8675393313-(S)-[[(9H-Fluoren-9-yl)methoxycarbonyl]amino]-3-(R)-methyl-12-oxo-14-(phenylmethoxy)-6-(phenylmethyl)-2,6,11-triazatetradecanoic acid, 1,1-dimethylethyl esterAusbeute 96,9 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 6344DichloromethaneLösungsmittel2×HCID 8857Ethyl AcetateLösungsmittel

Reaktionsbedingungen

Temperatur
0 °C

Versuchsvorschrift

1.71 g (4.1.10-3 mol) of N-[(9H-fluoren-9-yl)methoxycarbonyl]-O-phenylmethyl-(L)-serine are dissolved in 60 ml of dichloromethane. The solution is cooled to 0° C. and a solution of 0.55 g (4.10-3 mol) of HOBT and 1.54 g (7.5.10-3 mol) of DCC in 20 ml of dichloromethane is added. The mixture is stirred for 0.5 hour, 1.30 g (3.72.10-3 mol) of N-[3-[(4-aminobutyl)(phenylmethyl)amino]-1-(R)-methylpropyl]carbamic acid, 1, 1-dimethylethyl ester are then added and the reaction mixture is stirred at room temperature for 16 hours. The solvent is removed under reduced pressure and the residue is purified by chromatography on silica gel using an ethyl acetate/methylcyclohexane mixture (1/1 v/v) and then pure ethyl acetate as the eluent to give 2.7 g of the expected product in the form of a white crystalline solid (yield=96%).

Aufarbeitung

  1. stirringthe reaction mixture is stirred at room temperature for 16 hours
  2. customThe solvent is removed under reduced pressure
  3. customthe residue is purified by chromatography on silica gel using an ethyl acetate/methylcyclohexane mixture (1/1 v/v)

Quellen und Nachweise

ORD-Eintrag
ord-783bf9f57d18491b950657b284592a9c
Quelldatensatz
uspto-grants-1999_03
Patentnummer
US05883132

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