Benzyl Bromide → Uridine, 2'-deoxy-5-fluoro-3'-O-(phenylmethyl)-

HRID 466104

반응식

HRID 466104 반응식
[C:1]([O:20][CH2:21][C@H:22]1[O:26][C@@H:25]([N:27]2[CH:34]=[C:33]([F:35])[C:31](=[O:32])[NH:30][C:28]2=[O:29])[CH2:24][C@@H:23]1[OH:36])([C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1)(C1C=CC=CC=1)C1C=CC=CC=1.C(Br)C1C=CC=CC=1.[OH-].[K+]>O1CCOCC1>[CH2:1]([O:20][C@@H:21]1[C@@H:22]([CH2:23][OH:36])[O:26][C@@H:25]([N:27]2[CH:34]=[C:33]([F:35])[C:31](=[O:32])[NH:30][C:28]2=[O:29])[CH2:24]1)[C:14]1[CH:15]=[CH:16][CH:17]=[CH:18][CH:19]=1

참가 물질

5

반응물 3

HCID 7498Benzyl BromideHCID 14797Potassium HydroxideHCID 108387042'-deoxy-5'-O-trityl-5-fluorouridine

생성물 1

HCID 10664574Uridine, 2'-deoxy-5-fluoro-3'-O-(phenylmethyl)-수율 72.6%

시약·촉매·용매 1

HCID 312751,4-Dioxane용매

실험 절차

In 50 ml of dioxane was dissolved 10 g of 2'-deoxy-5'-O-trityl-5-fluorouridine. To the solution were added 2.9 ml of benzyl bromide and 14.6 g of particles of potassium hydroxide. The mixture was stirred at room temperature for 1 hour. The solvent was distilled off and the residue was dissolved in 80 ml of a 80% solution of acetic acid to undergo reaction at 50° to 60° C. for 2 hours. The reaction mixture was cooled with ice for 1 hour, the trityl alcohol was separated by filtration and the mother liquor was concentrated. To the concentrate was added ethanol and the mixture was stirred. The crystals precipitated were separated by filtration and dried, affording 5.0 g of the title compound in a yield of 72%.

후처리

  1. distillationThe solvent was distilled off
  2. dissolutionthe residue was dissolved in 80 ml of a 80% solution of acetic acid
  3. customreaction at 50° to 60° C. for 2 hours
  4. temperatureThe reaction mixture was cooled with ice for 1 hour
  5. customthe trityl alcohol was separated by filtration
  6. concentrationthe mother liquor was concentrated
  7. additionTo the concentrate was added ethanol
  8. stirringthe mixture was stirred
  9. customThe crystals precipitated
  10. customwere separated by filtration
  11. customdried

출처 및 근거

ORD 기록
ord-70939b8e63cd4aa28cc987d78df48095
출처 데이터셋
uspto-grants-1992_10
특허 번호
US05155113

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