Triphenylphosphine → (4-amino-1-{4-[(methylsulfonyl)amino]butyl}-1H-imidazo[4,5-c]quinolin-2-yl)methyl N-[(benzyloxy)carbonyl]-L-valinate

HRID 1925469

Reaktionsgleichung

Reaktionsgleichung von HRID 1925469
[NH2:1][C:2]1[C:11]2[N:12]=[C:13]([CH2:24][OH:25])[N:14]([CH2:15][CH2:16][CH2:17][CH2:18][NH:19][S:20]([CH3:23])(=[O:22])=[O:21])[C:10]=2[C:9]2[CH:8]=[CH:7][CH:6]=[CH:5][C:4]=2[N:3]=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.[C:45]([NH:55][C@H:56]([C:60](O)=[O:61])[CH:57]([CH3:59])[CH3:58])([O:47][CH2:48][C:49]1[CH:54]=[CH:53][CH:52]=[CH:51][CH:50]=1)=[O:46].N(C(OC(C)C)=O)=NC(OC(C)C)=O>C1COCC1.C(OCC)C>[CH2:48]([O:47][C:45]([NH:55][C@H:56]([C:60]([O:25][CH2:24][C:13]1[N:14]([CH2:15][CH2:16][CH2:17][CH2:18][NH:19][S:20]([CH3:23])(=[O:22])=[O:21])[C:10]2[C:9]3[CH:8]=[CH:7][CH:6]=[CH:5][C:4]=3[N:3]=[C:2]([NH2:1])[C:11]=2[N:12]=1)=[O:61])[CH:57]([CH3:59])[CH3:58])=[O:46])[C:49]1[CH:54]=[CH:53][CH:52]=[CH:51][CH:50]=1

Komponenten

7

Edukt 4

HCID 11776TriphenylphosphineHCID 75555Diisopropyl diazene-1,2-dicarboxylateHCID 726987N-Carbobenzoxy-L-valineHCID 11856399N-[4-(4-amino-2-hydroxymethyl-1H-imidazo[4,5-c]quinolin-1-yl)butyl]methanesulfonamide

Produkt 1

HCID 57555848(4-amino-1-{4-[(methylsulfonyl)amino]butyl}-1H-imidazo[4,5-c]quinolin-2-yl)methyl N-[(benzyloxy)carbonyl]-L-valinateAusbeute 57,8 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 3283Diethyl EtherLösungsmittelHCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

To a stirred suspension of N-[4-(4-amino-2-hydroxymethyl-1H-imidazo[4,5-c]quinolin-1-yl)butyl]methanesulfonamide (2.1 g, 5.8 mmol) in THF was added triphenylphosphine (1.5 equivalents, 8.7 mmol, 2.2 g) followed by CBZ-L-valine (1.5 equivalents, 8.7 mmol, 2.3 g). The suspension was stirred for 5 min after which it was cooled in an ice-bath. To this cooled reaction mixture diisopropyl azodicarboxylate (DIAD, 1.8 equivalents, 10.4 mmol, 2.0 mL) was added and the reaction was warmed to room temperature and stirred overnight. The solvent was evaporated under reduced pressure and the crude solid was purified by prep HPLC (ISCO Combiflash Separation System, Biotage Si 40+M column, eluted with a gradient of 0-8% methanol in dichloromethane with 1% ammonium hydroxide) to provide a solid. The solid was heated in diethyl ether and filtered to afford (4-amino-1-{4-[(methylsulfonyl)amino]butyl}-1H-imidazo[4,5-c]quinolin-2-yl)methyl N-[(benzyloxy)carbonyl]-L-valinate (2 g) as a beige solid, mp 99-100° C.; MS (ESI) m/z 597 (M+H)+; Anal. Calcd for C29H36N6O6S: C, 58.37; H, 6.08; N, 14.08; Found C, 57.98; H, 6.31; N, 13.82.

Aufarbeitung

  1. temperaturewas cooled in an ice-bath
  2. additionwas added
  3. stirringstirred overnight
  4. customThe solvent was evaporated under reduced pressure
  5. customthe crude solid was purified by prep HPLC (
  6. customISCO Combiflash Separation System, Biotage Si 40+M column
  7. washeluted with a gradient of 0-8% methanol in dichloromethane with 1% ammonium hydroxide)
  8. customto provide a solid
  9. filtrationfiltered

Quellen und Nachweise

ORD-Eintrag
ord-724a726b5e6a435181d91c0e2b90e72f
Quelldatensatz
uspto-grants-2012_05
Patentnummer
US08178677B2

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