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Sodium Bicarbonate → Ethyl cis(+/-)-2-(4-{[(benzyloxy)carbonyl]amino}-3-methoxypiperidin-1-yl)-5-methyl-1,3-oxazole-4-carboxylate

HRID 43616
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HRID 43616 반응식
[C:1]([N:4]1[CH2:9][CH2:8][C@H:7]([NH:10][C:11](=[O:20])[O:12][CH2:13][C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=2)[C@H:6]([O:21][CH3:22])[CH2:5]1)(=[O:3])[NH2:2].Br[CH:24]([CH3:34])[C:25](=O)[C:26]([O:28][CH2:29][CH2:30]CC)=[O:27].C(=O)(O)[O-].[Na+]>C1COCC1>[CH2:13]([O:12][C:11]([NH:10][C@H:7]1[CH2:8][CH2:9][N:4]([C:1]2[O:3][C:24]([CH3:34])=[C:25]([C:26]([O:28][CH2:29][CH3:30])=[O:27])[N:2]=2)[CH2:5][C@H:6]1[O:21][CH3:22])=[O:20])[C:14]1[CH:15]=[CH:16][CH:17]=[CH:18][CH:19]=1
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참가 물질

5

반응물 3

HCID 516892Sodium BicarbonateHCID 87440690Butyl 3-bromo-2-oxobutanoateHCID 131730860cis(+/-)-Benzyl (1-carbamoyl-3-methoxypiperidin-4-yl)carbamate

생성물 1

HCID 131730861Ethyl cis(+/-)-2-(4-{[(benzyloxy)carbonyl]amino}-3-methoxypiperidin-1-yl)-5-methyl-1,3-oxazole-4-carboxylate수율 78.2%

시약·촉매·용매 1

HCID 8028
Tetrahydrofuran
용매

실험 절차

The same operation as in Example (103c) was performed using cis(±)-benzyl (1-carbamoyl-3-methoxypiperidin-4-yl)carbamate obtained in Example (103b) (1.97 g, 6.4 mmol), butyl 3-bromo-2-oxobutanoate obtained in Example (106a) (10 g, 42.3 mmol), sodium bicarbonate (1.26 g, 15 mmol) and THF (40 mL). The resulting residue was purified by silica gel column chromatography (elution solvent: ethyl acetate/hexane=1/10, 1/2, 1/1, 2/1, 4/1) to obtain 2.09 g of the title compound as a yellow oily substance (73%).

후처리

  1. customThe resulting residue was purified by silica gel column chromatography (elution solvent: ethyl acetate/hexane=1/10, 1/2, 1/1, 2/1, 4/1)

출처 및 근거

ORD 기록
ord-6676af3c939d4c3681118c7606be351b
출처 데이터셋
uspto-grants-2013_09
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08536197B2

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