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Acetic Acid → (S)-3-{(S)-4-Methyl-2-[2-(naphthalen-1-yloxy)-acetylamino]-pentanoylamino}-4-oxo-butyric acid

HRID 1066038
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1066038
[C:1]1([O:11][CH2:12][C:13]([NH:15][C@H:16]([C:21]([NH:23][C@H:24]([CH:33]=[O:34])[CH2:25][C:26](=NNC(N)=O)[OH:27])=[O:22])[CH2:17][CH:18]([CH3:20])[CH3:19])=[O:14])[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[CH:4]=[CH:3][CH:2]=1.C(O)(=[O:37])C.CO>C=O.O>[C:1]1([O:11][CH2:12][C:13]([NH:15][C@H:16]([C:21]([NH:23][C@H:24]([CH:33]=[O:34])[CH2:25][C:26]([OH:27])=[O:37])=[O:22])[CH2:17][CH:18]([CH3:20])[CH3:19])=[O:14])[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[CH:4]=[CH:3][CH:2]=1
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

6

Edukt 3

HCID 176Acetic AcidHCID 887MethanolHCID 178446027(3 S)-3-[N-((1-naphthyloxy)acetyl)leucinyl]amino-4-oxobutanoic acid semicarbazone

Produkt 1

HCID 9823074(S)-3-{(S)-4-Methyl-2-[2-(naphthalen-1-yloxy)-acetylamino]-pentanoylamino}-4-oxo-butyric acidAusbeute 79 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 712
Formaldehyde
Lösungsmittel
HCID 962WaterLösungsmittel

Versuchsvorschrift

A solution of (3S)-3-[N-((1-naphthyloxy)acetyl)leucinyl]amino-4-oxobutanoic acid semicarbazone (0.320 g, 0.68 mmol) in 37% aqueous formaldehyde(1.0 mL)-acetic acid(1.0 mL)-methanol(3.0 mL) was stirred at room temperature under nitrogen for 3.5 hrs. The resulting solution was diluted with water and extracted with EtOAc. The extract was washed with water and saturated NaCl solution, dried over anhydrous Na2SO4 and evaporated to dryness. The residue was taken up in EtOAc, filtered through Celite and evaporated to dryness. The product was taken up in a small amount of dioxane, diluted with water, frozen and lyophilized to give the title compound (0.222 g, 79%) as a fluffy white solid. TLC(EtOAc-pyridine-AcOH—H2O; 60:20:5:10) Rf=0.65.

Aufarbeitung

  1. extractionextracted with EtOAc
  2. washThe extract was washed with water and saturated NaCl solution
  3. dry with materialdried over anhydrous Na2SO4
  4. customevaporated to dryness
  5. filtrationfiltered through Celite
  6. customevaporated to dryness
  7. additiondiluted with water
  8. temperaturefrozen

Quellen und Nachweise

ORD-Eintrag
ord-d40aa16915ea4b7d81bd8b238db3afd4
Quelldatensatz
uspto-grants-2001_06
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US06242422B1

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