1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → tert-butyl (2S,3R)-3-hydroxy-1-phenyl-4-(5-(prop-1-en-2-yl)nicotinamido)butan-2-ylcarbamate

HRID 2071185Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2071185
[CH2:1]=[C:2]([C:4]1[CH:5]=[N:6][CH:7]=[C:8]([CH:12]=1)[C:9]([OH:11])=O)[CH3:3].CCN=C=NCCCN(C)C.C1C=CC2N(O)N=NC=2C=1.[NH2:34][CH2:35][C@@H:36]([OH:53])[C@@H:37]([NH:45][C:46](=[O:52])[O:47][C:48]([CH3:51])([CH3:50])[CH3:49])[CH2:38][C:39]1[CH:44]=[CH:43][CH:42]=[CH:41][CH:40]=1.CCN(C(C)C)C(C)C>ClCCl>[OH:53][C@H:36]([CH2:35][NH:34][C:9](=[O:11])[C:8]1[CH:12]=[C:4]([C:2]([CH3:3])=[CH2:1])[CH:5]=[N:6][CH:7]=1)[C@@H:37]([NH:45][C:46](=[O:52])[O:47][C:48]([CH3:51])([CH3:49])[CH3:50])[CH2:38][C:39]1[CH:44]=[CH:43][CH:42]=[CH:41][CH:40]=1

Komponenten

7

Edukt 5

HCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 757711-HydroxybenzotriazoleHCID 81531DiisopropylethylamineHCID 10333883tert-butyl (2S,3R)-4-amino-3-hydroxy-1-phenylbutan-2-ylcarbamateHCID 686704595-(Prop-1-en-2-yl)nicotinic acid

Produkt 1

HCID 86647444tert-butyl (2S,3R)-3-hydroxy-1-phenyl-4-(5-(prop-1-en-2-yl)nicotinamido)butan-2-ylcarbamateAusbeute 53,5 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

To 5-(prop-1-en-2-yl)nicotinic acid (200 mg, 1.23 mmol) in dichlormethane (10 ml) at rt, EDCI (330 mg, 1.72 mmol) and HOBT (200 mg, 1.48 mmol) were added. After stirring at rt for 10 minutes, tert-butyl (2S,3R)-4-amino-3-hydroxy-1-phenylbutan-2-ylcarbamate (344 mg, 1.23 mmol) was added followed by DIPEA (0.2 ml). After stirring overnight at rt, reaction mixture was worked up as usual and residue was column purified (90% ethylacetate/10% hexanes) to yield 280 mg of tert-butyl (2S,3R)-3-hydroxy-1-phenyl-4-(5-(prop-1-en-2-yl)nicotinamido)butan-2-ylcarbamate, which on stirring with 4N HCl in dioxane for 4 h yields the HCl salt of N-((2R,3S)-3-amino-2-hydroxy-4-phenylbutyl)-5-(prop-1-en-2-yl)nicotinamide.

Aufarbeitung

  1. stirringAfter stirring overnight at rt
  2. customreaction mixture
  3. custompurified (90% ethylacetate/10% hexanes)

Quellen und Nachweise

ORD-Eintrag
ord-18eb0325680e4480bfc472267b5c7856
Quelldatensatz
uspto-grants-2012_10
Patentnummer
US08299267B2

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