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Cyclopentanol → 1-(3-((tert-butyldimethylsilyl)oxy)propyl)-7-(4-chlorobenzyl)-8-(cyclopentyloxy)-3-methyl-1H-purine-2,6(3H,7H)-dione

HRID 2200741
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HRID 2200741 반응식
[CH:1]1([OH:6])[CH2:5][CH2:4][CH2:3][CH2:2]1.[H-].[Na+].Br[C:10]1[N:18]([CH2:19][C:20]2[CH:25]=[CH:24][C:23]([Cl:26])=[CH:22][CH:21]=2)[C:17]2[C:16](=[O:27])[N:15]([CH2:28][CH2:29][CH2:30][O:31][Si:32]([C:35]([CH3:38])([CH3:37])[CH3:36])([CH3:34])[CH3:33])[C:14](=[O:39])[N:13]([CH3:40])[C:12]=2[N:11]=1>C1COCC1.O>[Si:32]([O:31][CH2:30][CH2:29][CH2:28][N:15]1[C:16](=[O:27])[C:17]2[N:18]([CH2:19][C:20]3[CH:21]=[CH:22][C:23]([Cl:26])=[CH:24][CH:25]=3)[C:10]([O:6][CH:1]3[CH2:5][CH2:4][CH2:3][CH2:2]3)=[N:11][C:12]=2[N:13]([CH3:40])[C:14]1=[O:39])([C:35]([CH3:36])([CH3:37])[CH3:38])([CH3:33])[CH3:34]
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참가 물질

6

반응물 3

HCID 7298CyclopentanolHCID 24758Sodium hydrideHCID 904028568-bromo-1-(3-((tert-butyldimethylsilyl)oxy)propyl)-7-(4-chlorobenzyl)-3-methyl-3,7-dihydro-1H-purine-2,6-dione2회

생성물 1

HCID 904026851-(3-((tert-butyldimethylsilyl)oxy)propyl)-7-(4-chlorobenzyl)-8-(cyclopentyloxy)-3-methyl-1H-purine-2,6(3H,7H)-dione수율 100%

시약·촉매·용매 2

HCID 962
Water
용매
HCID 8028Tetrahydrofuran용매

실험 절차

Step 1 Cyclopentanol (0.21 mL, 2.31 mmol) was dissolved in THF (5 mL) and sodium hydride (60% in oil, 0.092 g, 2.31 mmol) was added. The reaction was stirred for 1 h. 8-Bromo-1-(3-((tert-butyldimethylsilyl)oxy)propyl)-7-(4-chlorobenzyl)-3-methyl-1H-purine-2,6(3H,7H)-dione (0.25 g, 0.46 mmol, intermediate 77) was added and the reaction was stirred at room temperature for 15 h. The reaction was diluted with water (100 mL) and extracted with ethyl acetate (3×75 mL). The combined extracts were dried with magnesium sulfate, filtered and the solvent was removed under reduced pressure to give 1-(3-((tert-butyldimethylsilyl)oxy)propyl)-7-(4-chlorobenzyl)-8-(cyclopentyloxy)-3-methyl-1H-purine-2,6(3H,7H)-dione (0.25 g, 100% yield) as a golden oil. LCMS retention time=5.843 min and 71% purity, LCMS MH+ 547.

후처리

  1. stirringthe reaction was stirred at room temperature for 15 h
  2. extractionextracted with ethyl acetate (3×75 mL)
  3. dry with materialThe combined extracts were dried with magnesium sulfate
  4. filtrationfiltered
  5. customthe solvent was removed under reduced pressure

출처 및 근거

ORD 기록
ord-166b2c829d7945f4a2db33bf11edee50
출처 데이터셋
uspto-grants-2016_06
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US09359359B2

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