Dicyclohexylcarbodiimide → tert-butyl (3S,5R)-3-[{[1-(4-methoxybutyl)-1H-benzimidazol-2-yl]carbonyl}(2-methylpropyl)amino]-5-(5-methyl-1,3,4-oxadiazol-2-yl)piperidine-1-carboxylate

HRID 2168928Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2168928
[CH3:1][C:2]1[NH:6][N:5]=NN=1.[C:7]([O:11][C:12]([N:14]1[CH2:19][C@@H:18]([N:20]([C:25]([C:27]2[N:31]([CH2:32][CH2:33][CH2:34][CH2:35][O:36][CH3:37])[C:30]3[CH:38]=[CH:39][CH:40]=[CH:41][C:29]=3[N:28]=2)=[O:26])[CH2:21][CH:22]([CH3:24])[CH3:23])[CH2:17][C@@H:16]([C:42](O)=[O:43])[CH2:15]1)=[O:13])([CH3:10])([CH3:9])[CH3:8].C1CCC(N=C=NC2CCCCC2)CC1>C1(C)C=CC=CC=1.C(OCC)(=O)C>[CH3:37][O:36][CH2:35][CH2:34][CH2:33][CH2:32][N:31]1[C:30]2[CH:38]=[CH:39][CH:40]=[CH:41][C:29]=2[N:28]=[C:27]1[C:25]([N:20]([CH2:21][CH:22]([CH3:24])[CH3:23])[C@H:18]1[CH2:17][C@@H:16]([C:42]2[O:43][C:2]([CH3:1])=[N:6][N:5]=2)[CH2:15][N:14]([C:12]([O:11][C:7]([CH3:8])([CH3:9])[CH3:10])=[O:13])[CH2:19]1)=[O:26]

Komponenten

6

Edukt 3

HCID 10868DicyclohexylcarbodiimideHCID 58355779(3R,5S)-(tert-butoxycarbonyl)-5-[{[1-(4-methoxybutyl)-1H-benzimidazol-2-yl]carbonyl}(2-methylpropyl)amino]piperidine-3-carboxylic acidHCID 178434708HCID 178434708, Verbindung

Produkt 1

HCID 58355175tert-butyl (3S,5R)-3-[{[1-(4-methoxybutyl)-1H-benzimidazol-2-yl]carbonyl}(2-methylpropyl)amino]-5-(5-methyl-1,3,4-oxadiazol-2-yl)piperidine-1-carboxylateAusbeute 35,2 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 1140TolueneLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Reaktionsbedingungen

Temperatur
100 °C

Versuchsvorschrift

Methyltetrazole (63 mg) and (3R,5S)-1-(tert-butoxycarbonyl)-5-[{[1-(4-methoxybutyl)-1H-benzimidazol-2-yl]carbonyl}(2-methylpropyl)amino]piperidine-3-carboxylic acid (265 mg) were dissolved in toluene (5 ml), DCC (155 mg) was added and the mixture was stirred at 100° C. for 12 hr. The reaction mixture was diluted with ethyl acetate, filtered and the solvent of the mother liquor was evaporated under reduced pressure. The residue was subjected to silica gel column chromatography, and a fraction eluted with ethyl acetate-hexane (1:1-1:0) was concentrated under reduced pressure to give the object product (100 mg).

Aufarbeitung

  1. filtrationfiltered
  2. customthe solvent of the mother liquor was evaporated under reduced pressure
  3. washa fraction eluted with ethyl acetate-hexane (1:1-1:0)
  4. concentrationwas concentrated under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-18f3dbfda82f43c8b88c263ad9af9dfd
Quelldatensatz
uspto-grants-2015_06
Patentnummer
US09045436B2

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