Pyridine → (2S,3R,4R,5S)-3,4,5-Tris(benzyloxy)-2-(benzyloxymethyl)-6-(3-(bromomethyl)-4-chlorophenyl)-tetrahydro-2H-pyran

HRID 46189노트

반응식

HRID 46189 반응식
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]2[C@H:13]([O:14][CH2:15][C:16]3[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=3)[C@@H:12]([O:22][CH2:23][C:24]3[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=3)[C@H:11]([O:30][CH2:31][C:32]3[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=3)[C@@H:10]([CH2:38][O:39][CH2:40][C:41]3[CH:46]=[CH:45][CH:44]=[CH:43][CH:42]=3)[O:9]2)=[CH:4][C:3]=1[CH2:47]O.N1C=CC=CC=1.P(Br)(Br)[Br:56]>CCOCC.C(OCC)(=O)C>[CH2:31]([O:30][C@H:11]1[C@H:12]([O:22][CH2:23][C:24]2[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=2)[C@@H:13]([O:14][CH2:15][C:16]2[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=2)[CH:8]([C:5]2[CH:6]=[CH:7][C:2]([Cl:1])=[C:3]([CH2:47][Br:56])[CH:4]=2)[O:9][C@H:10]1[CH2:38][O:39][CH2:40][C:41]1[CH:46]=[CH:45][CH:44]=[CH:43][CH:42]=1)[C:32]1[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=1

참가 물질

6

반응물 3

HCID 1049PyridineHCID 24614Phosphorus tribromideHCID 67288226HCID 67288226, 화합물2회

생성물 1

HCID 67287514(2S,3R,4R,5S)-3,4,5-Tris(benzyloxy)-2-(benzyloxymethyl)-6-(3-(bromomethyl)-4-chlorophenyl)-tetrahydro-2H-pyran

시약·촉매·용매 2

HCID 3283Diethyl Ether용매HCID 8857Ethyl Acetate용매

실험 절차

To a solution of (2-chloro-5-((3S,4R,5R,6R)-3,4,5-tris(benzyloxy)-6-(benzyloxy-methyl) tetrahydro-2H-pyran-2-yl)phenyl)methanol (compound 5, 130 g, 195 mmol) from Step 6 in ether (600 mL) at 0° C. was added pyridine (0.79 mL, 9.8 mmol) and phosphorus tribromide (6.4 mL, 68 mmol). The reaction was allowed to slowly warm to room temperature over 15 h and refluxed 1 h. After cooling to room temperature, the reaction mixture was diluted with ethyl acetate and washed with water then brine. The organic extract was dried over magnesium sulfate, filtered, and evaporated in vacuo to yield the title compound as a yellow oil, which was used without further purification.

후처리

  1. temperaturerefluxed 1 h
  2. temperatureAfter cooling to room temperature
  3. washwashed with water
  4. extractionThe organic extract
  5. dry with materialwas dried over magnesium sulfate
  6. filtrationfiltered
  7. customevaporated in vacuo

출처 및 근거

ORD 기록
ord-6c7f277fb65044c1bbbd179f621aee60
출처 데이터셋
uspto-grants-2013_09
특허 번호
US08541380B2

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