Ammonium Chloride → 3,4,5-Tris-benzyloxy-6-benzyloxymethyl-2-[5-(4-ethylphenyl)methyl-2-(2-trityloxyethyl)thiophen-3-yl]-tetrahydropyran-2-ol

HRID 499731노트

반응식

HRID 499731 반응식
Br[C:2]1[CH:6]=[C:5]([CH2:7][C:8]2[CH:13]=[CH:12][C:11]([CH2:14][CH3:15])=[CH:10][CH:9]=2)[S:4][C:3]=1[CH2:16][CH2:17][O:18][C:19]([C:32]1[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=1)([C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1)[C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1.C([Li])CCC.[CH2:43]([O:50][CH:51]1[CH:56]([O:57][CH2:58][C:59]2[CH:64]=[CH:63][CH:62]=[CH:61][CH:60]=2)[CH:55]([O:65][CH2:66][C:67]2[CH:72]=[CH:71][CH:70]=[CH:69][CH:68]=2)[CH:54]([CH2:73][O:74][CH2:75][C:76]2[CH:81]=[CH:80][CH:79]=[CH:78][CH:77]=2)[O:53][C:52]1=[O:82])[C:44]1[CH:49]=[CH:48][CH:47]=[CH:46][CH:45]=1.[Cl-].[NH4+]>C1COCC1.CCCCCC>[CH2:43]([O:50][CH:51]1[CH:56]([O:57][CH2:58][C:59]2[CH:64]=[CH:63][CH:62]=[CH:61][CH:60]=2)[CH:55]([O:65][CH2:66][C:67]2[CH:68]=[CH:69][CH:70]=[CH:71][CH:72]=2)[CH:54]([CH2:73][O:74][CH2:75][C:76]2[CH:77]=[CH:78][CH:79]=[CH:80][CH:81]=2)[O:53][C:52]1([C:2]1[CH:6]=[C:5]([CH2:7][C:8]2[CH:13]=[CH:12][C:11]([CH2:14][CH3:15])=[CH:10][CH:9]=2)[S:4][C:3]=1[CH2:16][CH2:17][O:18][C:19]([C:32]1[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=1)([C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1)[C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1)[OH:82])[C:44]1[CH:49]=[CH:48][CH:47]=[CH:46][CH:45]=1

참가 물질

7

반응물 4

HCID 25517Ammonium ChlorideHCID 45855083,4,5-Tribenzyloxy-6-(benzyloxymethyl)tetrahydropyran-2-oneHCID 684604163-Bromo-5-((4-ethylphenyl)methyl)-2-(2-trityloxyethyl)thiopheneHCID 178418339Butyllithium

생성물 1

HCID 866266373,4,5-Tris-benzyloxy-6-benzyloxymethyl-2-[5-(4-ethylphenyl)methyl-2-(2-trityloxyethyl)thiophen-3-yl]-tetrahydropyran-2-ol수율 65%

시약·촉매·용매 2

HCID 8028Tetrahydrofuran용매2회HCID 8058Hexane용매

실험 절차

Under a nitrogen stream, to a solution of 3-bromo-5-((4-ethylphenyl)methyl)-2-(2-trityloxyethyl)thiophene (1.45 g, 2.55 mmol) in anhydrous THF (40 ml), a hexane solution of n-butyllithium (1.6 M, 1.76 ml, 2.81 mmol) was added dropwise at −78° C. and the mixture was stirred for 15 minutes. To this solution was added a solution of 3,4,5-trisbenzyloxy-6-(benzyloxymethyl)tetrahydropyran-2-one (1.50 g, 2.81 mmol) in anhydrous THF (10 ml) dropwise at −78° C. and the resulting solution was stirred at the same temperature for 10 minutes. After addition of saturated aqueous ammonium chloride, the reaction mixture was extracted with ethyl acetate. The organic layer was washed with saturated aqueous sodium chloride, dried over anhydrous magnesium sulfate, and then evaporated under reduced pressure to remove the solvent. The resulting residue was purified by silica gel column chromatography (developing solution=ethyl acetate:n-hexane (1:20)) to give the titled compound (1.70 g, 65%).

후처리

  1. stirringthe resulting solution was stirred at the same temperature for 10 minutes
  2. extractionthe reaction mixture was extracted with ethyl acetate
  3. washThe organic layer was washed with saturated aqueous sodium chloride
  4. dry with materialdried over anhydrous magnesium sulfate
  5. customevaporated under reduced pressure
  6. customto remove the solvent
  7. customThe resulting residue was purified by silica gel column chromatography (developing solution=ethyl acetate:n-hexane (1:20))

출처 및 근거

ORD 기록
ord-be7255b86c9e47069d6c76538c2b9a07
출처 데이터셋
uspto-grants-2010_08
특허 번호
US07767651B2

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