Ciprofloxacin → 1-Cyclopropyl-6-fluoro-1,4-dihydro-7-[4-(5-methyl-2-oxo-1,3-dioxol-4-yl-methyl)-1-piperazinyl]-4-oxo-3-quinolinecarboxylic acid

HRID 256315

반응식

HRID 256315 반응식
[CH:1]1([N:4]2[C:13]3[C:8](=[CH:9][C:10]([F:20])=[C:11]([N:14]4[CH2:19][CH2:18][NH:17][CH2:16][CH2:15]4)[CH:12]=3)[C:7](=[O:21])[C:6]([C:22]([OH:24])=[O:23])=[CH:5]2)[CH2:3][CH2:2]1.Br[CH2:26][C:27]1[O:28][C:29](=[O:33])[O:30][C:31]=1[CH3:32].C(=O)(O)[O-].[K+]>CN(C)C=O>[CH:1]1([N:4]2[C:13]3[C:8](=[CH:9][C:10]([F:20])=[C:11]([N:14]4[CH2:19][CH2:18][N:17]([CH2:26][C:27]5[O:28][C:29](=[O:33])[O:30][C:31]=5[CH3:32])[CH2:16][CH2:15]4)[CH:12]=3)[C:7](=[O:21])[C:6]([C:22]([OH:24])=[O:23])=[CH:5]2)[CH2:2][CH2:3]1

참가 물질

5

반응물 3

HCID 2764CiprofloxacinHCID 516893Potassium BicarbonateHCID 107741414-(Bromomethyl)-5-methyl-1,3-dioxol-2-one

생성물 1

HCID 136732721-Cyclopropyl-6-fluoro-1,4-dihydro-7-[4-(5-methyl-2-oxo-1,3-dioxol-4-yl-methyl)-1-piperazinyl]-4-oxo-3-quinolinecarboxylic acid

시약·촉매·용매 1

HCID 6228Dimethylformamide용매

실험 절차

1.15 g (3.5 mmoles) of 1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-7-(1-piperazinyl)-3-quinolinecarboxylic acid are stirred in 20 ml of dimethylformamide with 0.85 g (4.4 mmoles) of 4-bromomethyl-5-methyl-1,3-dioxol-2-one and 0.42 g (4.2 mmoles) of powdered potassium bicarbonate for 3 days, while cooling with ice. The mixture is concentrated in vacuo, the residue is stirred with 20 ml of water, the resulting greasy product is dissolved in methanol and the solution is filtered. The filtrate is left to stand at room temperature for 2 days and the colorless crystals which have precipitated are isolated.

후처리

  1. temperaturewhile cooling with ice
  2. concentrationThe mixture is concentrated in vacuo
  3. dissolutionthe resulting greasy product is dissolved in methanol
  4. filtrationthe solution is filtered
  5. waitThe filtrate is left
  6. customthe colorless crystals which have precipitated
  7. customare isolated

출처 및 근거

ORD 기록
ord-a73071cede0544c8b4b53d87ab259d7d
출처 데이터셋
uspto-grants-1987_10
특허 번호
US04703047

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