Hexane → 2,3,4,6-tetra-O-benzyl-1-C-[3-[(4-(4-tetrahydropyranyloxy)phenyl)(hydroxy)methyl]phenyl]-5-thio-D-glucopyranose

HRID 604753Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 604753
CCCCCC.Br[C:8]1[CH:13]=[CH:12][C:11]([O:14][CH:15]2[CH2:20][CH2:19][O:18][CH2:17][CH2:16]2)=[CH:10][CH:9]=1.[CH2:21]([O:28][C@@H:29]1[C@@H:35]([O:36][CH2:37][C:38]2[CH:43]=[CH:42][CH:41]=[CH:40][CH:39]=2)[C@H:34]([O:44][CH2:45][C:46]2[CH:51]=[CH:50][CH:49]=[CH:48][CH:47]=2)[C@@H:33]([CH2:52][O:53][CH2:54][C:55]2[CH:60]=[CH:59][CH:58]=[CH:57][CH:56]=2)[S:32][C:30]1([C:61]1[CH:66]=[CH:65][CH:64]=[C:63]([CH:67]=[O:68])[CH:62]=1)[OH:31])[C:22]1[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=1.[Cl-].[NH4+]>O1CCCC1>[CH2:21]([O:28][C@@H:29]1[C@@H:35]([O:36][CH2:37][C:38]2[CH:39]=[CH:40][CH:41]=[CH:42][CH:43]=2)[C@H:34]([O:44][CH2:45][C:46]2[CH:51]=[CH:50][CH:49]=[CH:48][CH:47]=2)[C@@H:33]([CH2:52][O:53][CH2:54][C:55]2[CH:56]=[CH:57][CH:58]=[CH:59][CH:60]=2)[S:32][C:30]1([C:61]1[CH:66]=[CH:65][CH:64]=[C:63]([CH:67]([C:8]2[CH:13]=[CH:12][C:11]([O:14][CH:15]3[CH2:20][CH2:19][O:18][CH2:17][CH2:16]3)=[CH:10][CH:9]=2)[OH:68])[CH:62]=1)[OH:31])[C:22]1[CH:23]=[CH:24][CH:25]=[CH:26][CH:27]=1

Komponenten

6

Edukt 4

HCID 8058HexaneHCID 25517Ammonium ChlorideHCID 162161274-(4-Bromophenoxy)tetrahydro-2H-pyranHCID 866204782,3,4,6-tetra-O-benzyl-1-C-(3-formylphenyl)-5-thio-D-glucopyranose

Produkt 1

HCID 670690812,3,4,6-tetra-O-benzyl-1-C-[3-[(4-(4-tetrahydropyranyloxy)phenyl)(hydroxy)methyl]phenyl]-5-thio-D-glucopyranoseAusbeute 76 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel2×

Versuchsvorschrift

2.6 M n-butylithium hexane solution (0.8 mL) was added to a mixture of 1-bromo-4-(4-tetrahydropyranyloxy)benzene (0.545 g, 2.12 mmol) and tetrahydrofuran (6 mL) at −78° C. After stirred for 1.5 hours, a tetrahydrofuran (8 mL) solution of 2,3,4,6-tetra-O-benzyl-1-C-(3-formylphenyl)-5-thio-D-glucopyranose (0.70 g, 1.06 mmol) was added and further stirred for three hours, and the reaction mixture was warmed to room temperature. After the reaction mixture was added with a saturated ammonium chloride aqueous solution and extracted with ethyl acetate, the organic phase was washed with brine and dried with anhydrous magnesium sulfate. After the desiccant was filtered off, the residue obtained by evaporating the solvent under reduced pressure was purified by silica gel column chromatography (hexane:ethyl acetate=2:1) to obtain 2,3,4,6-tetra-O-benzyl-1-C-[3-[(4-(4-tetrahydropyranyloxy)phenyl)(hydroxy)methyl]phenyl]-5-thio-D-glucopyranose (0.67 g, 76%).

Aufarbeitung

  1. stirringfurther stirred for three hours
  2. extractionextracted with ethyl acetate
  3. washthe organic phase was washed with brine
  4. dry with materialdried with anhydrous magnesium sulfate
  5. filtrationAfter the desiccant was filtered off
  6. customthe residue obtained
  7. customby evaporating the solvent under reduced pressure
  8. customwas purified by silica gel column chromatography (hexane:ethyl acetate=2:1)

Quellen und Nachweise

ORD-Eintrag
ord-d8bdcdc2a62049f593b0a815ed765d1e
Quelldatensatz
uspto-grants-2011_03
Patentnummer
US07910619B2

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