4-Methylmorpholine → Boc-Ile-Pro-OBzl

HRID 1533825노트

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HRID 1533825 반응식
[NH:1]([C:10]([O:12][C:13]([CH3:16])([CH3:15])[CH3:14])=[O:11])[C@H:2]([C:7]([OH:9])=O)[C@H:3]([CH2:5][CH3:6])[CH3:4].CN1CCOCC1.C(OC(Cl)=O)C(C)C.C1C=CC2N(O)N=NC=2C=1.[NH:42]1[CH2:56][CH2:55][CH2:54][C@H:43]1[C:44]([O:46][CH2:47][C:48]1[CH:53]=[CH:52][CH:51]=[CH:50][CH:49]=1)=[O:45].C([O-])(O)=O.[Na+]>CN(C=O)C>[NH:1]([C:10]([O:12][C:13]([CH3:16])([CH3:15])[CH3:14])=[O:11])[C@H:2]([C:7]([N:42]1[CH2:56][CH2:55][CH2:54][C@H:43]1[C:44]([O:46][CH2:47][C:48]1[CH:49]=[CH:50][CH:51]=[CH:52][CH:53]=1)=[O:45])=[O:9])[C@H:3]([CH2:5][CH3:6])[CH3:4]

참가 물질

8

반응물 6

HCID 79724-Methylmorpholine2회HCID 62365Isobutyl chloroformateHCID 757711-HydroxybenzotriazoleHCID 516892Sodium BicarbonateHCID 736155Benzyl L-prolinateHCID 2724762tert-Butoxycarbonyl-L-isoleucine

생성물 1

HCID 14306235Boc-Ile-Pro-OBzl수율 92%

시약·촉매·용매 1

HCID 6228Dimethylformamide용매2회

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온도
-15 °C

실험 절차

Boc-Ile-OH (12.01 @, 0.05 mole) in DMF (50 ml) was cooled to 0° C. and NMM (5.49 ml) was added. After cooling the solution to -15° C. isobutylchloroformate (6.48 ml) was added slowly while maintaining the temperature at -15° C. and st1rred for 10 minutes at which time HOBt (7.65 g) was added and stirring was continued for additional 10 minutes. A pre-cooled solution of HCL-H-Pro-OBzl (12.09 g. 0.05 mole) in DMF (50 ml) and NMM (5.49 ml) was added to the above solution and the completeness of the reaction was followed by TLC. The reaction mixture was poured into a cold saturated NaHCO3 solution and stirred for one hour. The peptide was extracted into CHCl3 and washed with acid and base (0.5 N NaOH to remove HOBt), and on evaporating the solvent the product was obtained as an oil in 92% yield. Rf1, 0.65. Anal. Calcd. for C23H34N2O5 : C 66.00, H 9.19, N 6.69%. Found: C 65.58, H 8.28, N 7.13%.

후처리

  1. additionwas added slowly
  2. stirringstirred for one hour
  3. extractionThe peptide was extracted into CHCl3
  4. washwashed with acid and base (0.5 N NaOH to remove HOBt)
  5. customon evaporating the solvent the product
  6. customwas obtained as an oil in 92% yield

출처 및 근거

ORD 기록
ord-75e3738c99c04323a1fe11f8cff61a78
출처 데이터셋
uspto-grants-1992_02
특허 번호
US05085055

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