3-Pyridinecarboxaldehyde → (2S,4R)-4-(4-chlorophenylsulfonylamino)-2-[(Z)-5-methoxycarbonyl-1-pentenyl]-1-(3-pyridylmethyl)pyrrolidine

HRID 654167Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 654167
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([S:8]([NH:11][C@H:12]2[CH2:16][NH:15][C@H:14](/[CH:17]=[CH:18]\[CH2:19][CH2:20][CH2:21][C:22]([O:24][CH3:25])=[O:23])[CH2:13]2)(=[O:10])=[O:9])=[CH:4][CH:3]=1.[CH:26](=O)[C:27]1[CH:32]=[CH:31][CH:30]=[N:29][CH:28]=1.C([BH3-])#N.[Na+].C(=O)(O)[O-].[Na+]>CO.C(O)(=O)C>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([S:8]([NH:11][C@H:12]2[CH2:16][N:15]([CH2:26][C:27]3[CH:28]=[N:29][CH:30]=[CH:31][CH:32]=3)[C@H:14](/[CH:17]=[CH:18]\[CH2:19][CH2:20][CH2:21][C:22]([O:24][CH3:25])=[O:23])[CH2:13]2)(=[O:10])=[O:9])=[CH:6][CH:7]=1

Komponenten

7

Edukt 4

HCID 103713-PyridinecarboxaldehydeHCID 516892Sodium BicarbonateHCID 5003444Sodium cyanoborohydrideHCID 15670385(2S,4R)-4-(4-chlorophenylsulfonylamino)-2-[(Z)-5-methoxycarbonyl-1-pentenyl]pyrrolidine

Produkt 1

HCID 15670386(2S,4R)-4-(4-chlorophenylsulfonylamino)-2-[(Z)-5-methoxycarbonyl-1-pentenyl]-1-(3-pyridylmethyl)pyrrolidineAusbeute 77,3 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 176Acetic AcidLösungsmittelHCID 887MethanolLösungsmittel

Versuchsvorschrift

To a mixture of (2S,4R)-4-(4-chlorophenylsulfonylamino)-2-[(Z)-5-methoxycarbonyl-1-pentenyl]pyrrolidine (356 mg) and nicotinaldehyde (98.6 mg) in methanol (5 ml) were added acetic acid (0.1 ml) and sodium cyanoborohydride (58 mg) and the mixture was stirred at room temperature for 3 hours. Saturated aqueous sodium bicarbonate (20 ml) was added to the solution and the aqueous solution was extracted with chloroform (50 ml). The organic layer was washed with brine and dried over magnesium sulfate. The solvent was evaporated in vacuo and the residue was chromatographed on a silica gel (10 g) column with a mixture of chloroform and methanol (99:1) to give (2S,4R)-4-(4-chlorophenylsulfonylamino)-2-[(Z)-5-methoxycarbonyl-1-pentenyl]-1-(3-pyridylmethyl)pyrrolidine (340 mg).

Aufarbeitung

  1. extractionthe aqueous solution was extracted with chloroform (50 ml)
  2. washThe organic layer was washed with brine
  3. dry with materialdried over magnesium sulfate
  4. customThe solvent was evaporated in vacuo
  5. customthe residue was chromatographed on a silica gel (10 g) column with a mixture of chloroform and methanol (99:1)

Quellen und Nachweise

ORD-Eintrag
ord-e70de45766ea42f5a3d584e213cfdce8
Quelldatensatz
uspto-grants-1992_07
Patentnummer
US05130323

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