Acetic Acid → Methyl (E)-7-[1-butyl-5-(4-fluorophenyl)-7-isopropyl-2,4-dioxo-1,2,3,4-tetrahydro-pyrido(2,3-d)pyrimidin-6-yl]-5-hydroxy-3-oxo-hept-6-enoate

HRID 1461349노트

반응식

HRID 1461349 반응식
[C:1]([O:7][CH3:8])(=[O:6])[CH2:2][C:3]([CH3:5])=[O:4].[H-].[Na+].C([Li])CCC.[CH2:16]([N:20]1[C:25]2[N:26]=[C:27]([CH:41]([CH3:43])[CH3:42])[C:28](/[CH:37]=[CH:38]/[CH:39]=[O:40])=[C:29]([C:30]3[CH:35]=[CH:34][C:33]([F:36])=[CH:32][CH:31]=3)[C:24]=2[C:23](=[O:44])[NH:22][C:21]1=[O:45])[CH2:17][CH2:18][CH3:19].C(O)(=O)C>O1CCCC1.CCCCCC.O>[CH2:16]([N:20]1[C:25]2[N:26]=[C:27]([CH:41]([CH3:42])[CH3:43])[C:28](/[CH:37]=[CH:38]/[CH:39]([OH:40])[CH2:5][C:3](=[O:4])[CH2:2][C:1]([O:7][CH3:8])=[O:6])=[C:29]([C:30]3[CH:35]=[CH:34][C:33]([F:36])=[CH:32][CH:31]=3)[C:24]=2[C:23](=[O:44])[NH:22][C:21]1=[O:45])[CH2:17][CH2:18][CH3:19]

참가 물질

9

반응물 5

HCID 176Acetic AcidHCID 7757Methyl acetoacetateHCID 24758Sodium hydrideHCID 19980383(E)-3-[1-Butyl-5-(4-fluorophenyl)-7-isopropyl-2,4-dioxo-1,2,3,4-tetrahydro-pyrido(2,3-d)pyrimidin-6-yl]prop-2-enalHCID 178418339Butyllithium

생성물 1

HCID 67836864Methyl (E)-7-[1-butyl-5-(4-fluorophenyl)-7-isopropyl-2,4-dioxo-1,2,3,4-tetrahydro-pyrido(2,3-d)pyrimidin-6-yl]-5-hydroxy-3-oxo-hept-6-enoate

시약·촉매·용매 3

HCID 962Water용매HCID 8028Tetrahydrofuran용매2회HCID 8058Hexane용매

실험 절차

0.7 g (6 mmol) of methyl acetoacetate are added dropwise at 0°-5° C. to a suspension of 0.2 g (6.6 mmol) of 80% strength sodium hydride in 8 ml of anhydrous tetrahydrofuran. After 15 min, 4.9 ml (8 mmol) of 15% strength butyllithium in hexane are added dropwise in the course of 10 min and the mixture is kept at 0° C. for a further 15 min. 0.82 g (2 mmol) of the compound from Example 6 and 10 ml of tetrahydrofuran are then added and the mixture is stirred at 0°-5° C. for 1 h. 1.2 g (20 mmol) of acetic acid in 20 ml of water are then added cautiously, the mixture is extracted three times with ethyl acetate, and the organic phase is washed with sodium chloride solution, dried over sodium sulphate and concentrated in vacuo. The residue is chromatographed on 40 g of 230-400 mesh silica gel (φ 3 cm) using petroleum/ethyl acetate (2:1) to (1:3).

후처리

  1. waitthe mixture is kept at 0° C. for a further 15 min
  2. extractionthe mixture is extracted three times with ethyl acetate
  3. washthe organic phase is washed with sodium chloride solution
  4. dry with materialdried over sodium sulphate
  5. concentrationconcentrated in vacuo
  6. customThe residue is chromatographed on 40 g of 230-400 mesh silica gel (φ 3 cm)

출처 및 근거

ORD 기록
ord-196c739466dd460c9e0715bcb0aaa277
출처 데이터셋
uspto-grants-1991_12
특허 번호
US05075311

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