(3R,3aS,6aR)hexahydrofuro[2,3-b]furan-3-yl (1S,2R)-1-benzyl-3-{(1-ethylpropoxy)[(4-nitrophenyl)sulfonyl]amino}-2-hydroxypropylcarbamate → (3R,3aS,6aR)hexahydrofuro[2,3-b]furan-3-yl (1S,2R)-3-[[(4-aminophenyl)sulfonyl](1-ethylpropoxy)amino]-1-benzyl-2-hydroxypropylcarbamate

HRID 1166514Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1166514
[CH2:1]([C@H:8]([NH:31][C:32](=[O:42])[O:33][C@@H:34]1[C@H:41]2[C@H:37]([O:38][CH2:39][CH2:40]2)[O:36][CH2:35]1)[C@H:9]([OH:30])[CH2:10][N:11]([O:24][CH:25]([CH2:28][CH3:29])[CH2:26][CH3:27])[S:12]([C:15]1[CH:20]=[CH:19][C:18]([N+:21]([O-])=O)=[CH:17][CH:16]=1)(=[O:14])=[O:13])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1>CO.[Pd]>[NH2:21][C:18]1[CH:17]=[CH:16][C:15]([S:12]([N:11]([O:24][CH:25]([CH2:28][CH3:29])[CH2:26][CH3:27])[CH2:10][C@@H:9]([OH:30])[C@@H:8]([NH:31][C:32](=[O:42])[O:33][C@@H:34]2[C@H:41]3[C@H:37]([O:38][CH2:39][CH2:40]3)[O:36][CH2:35]2)[CH2:1][C:2]2[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=2)(=[O:14])=[O:13])=[CH:20][CH:19]=1

Komponenten

4

Edukt 1

HCID 59787925(3R,3aS,6aR)hexahydrofuro[2,3-b]furan-3-yl (1S,2R)-1-benzyl-3-{(1-ethylpropoxy)[(4-nitrophenyl)sulfonyl]amino}-2-hydroxypropylcarbamate

Produkt 1

HCID 59090562(3R,3aS,6aR)hexahydrofuro[2,3-b]furan-3-yl (1S,2R)-3-[[(4-aminophenyl)sulfonyl](1-ethylpropoxy)amino]-1-benzyl-2-hydroxypropylcarbamateAusbeute 71 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 23938PalladiumKatalysatorHCID 887MethanolLösungsmittel

Versuchsvorschrift

A solution of (3R,3aS,6aR)hexahydrofuro[2,3-b]furan-3-yl (1S,2R)-1-benzyl-3-{(1-ethylpropoxy)[(4-nitrophenyl)sulfonyl]amino}-2-hydroxypropylcarbamate (237 mg, 0.390 mmol) in absolute methanol (5 mL) was combined with Palladium on carbon (10 wt %, 50 mg) and reduced under a Hydrogen atmosphere over 16 hours. The reaction was filtered and evaporated in vacuo. The residue was purified on silica gel eluting with 50-60% ethyl acetate in hexane. Fractions containing the product were combined and evaporated in vacuo. The residue was triturated with water, filtered and dried under high vacuum to provide (3R,3aS,6aR)hexahydrofuro[2,3-b]furan-3-yl (1S,2R)-3-[[(4-aminophenyl)sulfonyl](1-ethylpropoxy)amino]-1-benzyl-2-hydroxypropylcarbamate (160 mg, 71%) as a white solid. H1-NMR (chloroform-D3): 0.90 (m, 6H), 1.58 (m, 7H), 2.95 (m, 5H), 3.69 (m, 2H), 3.91 (m, 4H), 4.13 (m, 1H), 4.26 (b, 2H), 4.80 (d, 1H), 5.00 (m, 1H), 5.63 (d, 1H), 6.67 (d, 2H), 7.22 (m, 5H), 7.58 (d, 2H). ). MS(ESI): 600(M+Na).

Aufarbeitung

  1. filtrationThe reaction was filtered
  2. customevaporated in vacuo
  3. customThe residue was purified on silica gel eluting with 50-60% ethyl acetate in hexane
  4. additionFractions containing the product
  5. customevaporated in vacuo
  6. customThe residue was triturated with water
  7. filtrationfiltered
  8. customdried under high vacuum

Quellen und Nachweise

ORD-Eintrag
ord-fe5bd842b09e4b36bfdfc8ca9cb93b1a
Quelldatensatz
uspto-grants-2003_09
Patentnummer
US06613743B2

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