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

HRID 1425148노트

반응식

HRID 1425148 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]([CH2:34][CH2:35][CH3:36])[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]([CH2:34][CH2:35][CH3:36])=[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

참가 물질

5

반응물 3

HCID 516892Sodium BicarbonateHCID 87440704Butyl 3-bromo-2-oxohexanoateHCID 131730860cis(+/-)-Benzyl (1-carbamoyl-3-methoxypiperidin-4-yl)carbamate

생성물 1

HCID 131730867Ethyl cis(+/-)-2-(4-{[(benzyloxy)carbonyl]amino}-3-methoxypiperidin-1-yl)-5-propyl-1,3-oxazole-4-carboxylate수율 74.1%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매

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) (0.95 g, 3.09 mmol), butyl 3-bromo-2-oxohexanoate obtained in Example (116a) (5.1 g, 19.2 mmol), sodium bicarbonate (0.64 g, 7.6 mmol) and THF (20 mL). The resulting residue was purified by silica gel column chromatography (elution solvent: ethyl acetate/hexane=1/4, 2/3, 1/1, 3/2, 2/1) to obtain 1.02 g of the title compound as a light yellow solid (70%).

후처리

  1. customThe resulting residue was purified by silica gel column chromatography (elution solvent: ethyl acetate/hexane=1/4, 2/3, 1/1, 3/2, 2/1)

출처 및 근거

ORD 기록
ord-b22e2df9c27741c8b926ecb654acc924
출처 데이터셋
uspto-grants-2015_01
특허 번호
US08927588B2

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