Lithium Hydroxide → 2-(8-[2-(4-Isopropyl-1,3-thiazol-2-yl)ethyl]-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yloxy)acetic acid

HRID 1828517노트

반응식

HRID 1828517 반응식
[CH:1]([C:4]1[N:5]=[C:6]([CH2:9][CH2:10][C:11]2[CH:28]=[CH:27][N:14]3[C:15](=[O:26])[C:16]([O:19][CH2:20][C:21]([O:23]CC)=[O:22])=[CH:17][N:18]=[C:13]3[CH:12]=2)[S:7][CH:8]=1)([CH3:3])[CH3:2].[OH-].[Li+]>O1CCCC1.CO.O>[CH:1]([C:4]1[N:5]=[C:6]([CH2:9][CH2:10][C:11]2[CH:28]=[CH:27][N:14]3[C:15](=[O:26])[C:16]([O:19][CH2:20][C:21]([OH:23])=[O:22])=[CH:17][N:18]=[C:13]3[CH:12]=2)[S:7][CH:8]=1)([CH3:3])[CH3:2]

참가 물질

6

반응물 2

HCID 3939Lithium HydroxideHCID 22063720ethyl 2-{8-[2-(4-isopropyl-1,3-thiazol-2-yl)ethyl]-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yloxy}acetate2회

생성물 1

HCID 696032112-(8-[2-(4-Isopropyl-1,3-thiazol-2-yl)ethyl]-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yloxy)acetic acid

시약·촉매·용매 3

HCID 887Methanol용매HCID 962Water용매HCID 8028Tetrahydrofuran용매

실험 절차

The ethyl 2-{8-[2-(4-isopropyl-1,3-thiazol-2-yl)ethyl]-4-oxo-4H-pyrido[1,2-a]-pyrimidin-3-yloxy}acetate (41 mg) obtained in (A) was dissolved in tetrahydrofuran (1 ml) and methanol (300 ml), added with a solution of lithium hydroxide (5 mg) dissolved in water (300 ml), and then the mixture was stirred at room temperature for 1 hour, and the solvent was concentrated under reduced pressure. The residue was distributed between ether and water, and the aqueous layer was separated and made pH 3 with hydrochloric acid, and then extracted with ethyl acetate. The organic layer was dried over sodium sulfate. After the solvent was evaporated, the residue was purified by silica gel column chromatography to obtain the title compound (quantitative).

후처리

  1. concentrationthe solvent was concentrated under reduced pressure
  2. customthe aqueous layer was separated
  3. extractionextracted with ethyl acetate
  4. dry with materialThe organic layer was dried over sodium sulfate
  5. customAfter the solvent was evaporated
  6. customthe residue was purified by silica gel column chromatography

출처 및 근거

ORD 기록
ord-74f1e1772a2e4336865933d50b36bd22
출처 데이터셋
uspto-grants-2006_06
특허 번호
US07056917B2

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