Triethylamine → N-(Nalpha-benzyloxycarbonyl-Nepsilon-tert-butoxycarbonyl-L-lysyl)-L-proline tert-butyl ester

HRID 2351223노트

반응식

HRID 2351223 반응식
[C:1]([O:5][C:6](=[O:12])[C@@H:7]1[CH2:11][CH2:10][CH2:9][NH:8]1)([CH3:4])([CH3:3])[CH3:2].[CH2:13]([O:20][C:21]([NH:23][C@H:24]([C:37](O)=[O:38])[CH2:25][CH2:26][CH2:27][CH2:28][NH:29][C:30]([O:32][C:33]([CH3:36])([CH3:35])[CH3:34])=[O:31])=[O:22])[C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1.P(C#N)(=O)(OCC)OCC.C(N(CC)CC)C>CN(C)C=O.O>[C:1]([O:5][C:6](=[O:12])[C@@H:7]1[CH2:11][CH2:10][CH2:9][N:8]1[C:37](=[O:38])[C@H:24]([CH2:25][CH2:26][CH2:27][CH2:28][NH:29][C:30]([O:32][C:33]([CH3:35])([CH3:34])[CH3:36])=[O:31])[NH:23][C:21]([O:20][CH2:13][C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1)=[O:22])([CH3:4])([CH3:2])[CH3:3]

참가 물질

7

반응물 4

HCID 8471TriethylamineHCID 76257Diethyl cyanophosphonateHCID 98765IN2-(benzyloxycarbonyl)-N6-(tert-butoxycarbonyl)-L-lysineHCID 6453108L-Proline 1,1-dimethylethyl ester

생성물 1

HCID 14010667N-(Nalpha-benzyloxycarbonyl-Nepsilon-tert-butoxycarbonyl-L-lysyl)-L-proline tert-butyl ester수율 73.5%

시약·촉매·용매 2

HCID 962Water용매HCID 6228Dimethylformamide용매2회

실험 절차

In 30 ml of N,N-dimethylformamide are dissolved 2.4 g of L-proline tert-butyl ester and 5.87 g of Nα -benzyloxycarbonyl-Nε -tert-butoxycarbonyl-L-lysine, and 3 g of diethyl phosphorocyanidate is added dropwise to the solution under ice-cooling. After stirring for 30 minutes, a solution of 1.42 g of triethylamine in 5 ml of N,N-dimethylformamide is added to the mixture, followed by stirring under ice-cooling for 1 hour and then at room temperature for 2 hours. 500 ml of water is added to the reaction mixture, and the mixture is extracted with 300 ml of ethyl acetate. The extract is washed with aqueous dilute phosphoric acid, 0.1N aqueous sodium hydroxide and water, successively, dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The resulting oily material is purified by silica gel column chromatography (hexane:ethyl acetate=2:1 to 1:1) to give 5.5 g of N-(Nα -benzyloxycarbonyl-Nε -tert-butoxycarbonyl-L-lysyl)-L-proline tert-butyl ester as a colorless oil.

후처리

  1. additionis added dropwise to the solution under ice-
  2. temperaturecooling
  3. stirringby stirring under ice-
  4. temperaturecooling for 1 hour
  5. waitat room temperature for 2 hours
  6. extractionthe mixture is extracted with 300 ml of ethyl acetate
  7. washThe extract is washed with aqueous dilute phosphoric acid, 0.1N aqueous sodium hydroxide and water
  8. dry with materialsuccessively, dried over anhydrous magnesium sulfate
  9. concentrationconcentrated under reduced pressure
  10. customThe resulting oily material is purified by silica gel column chromatography (hexane:ethyl acetate=2:1 to 1:1)

출처 및 근거

ORD 기록
ord-a730bf944dec40268f79477e74f11837
출처 데이터셋
uspto-grants-1989_10
특허 번호
US04871842

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