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4-Nitrobenzenesulfonyl chloride → 3-(4-Benzyloxy-phenyl)-2-[4-methyl-2-(4-nitro-benzenesulfonylamino)-pentanoylamino]-propionic acid tert-butyl ester

HRID 2230319
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HRID 2230319 반응식
[C:1]([O:5][C:6](=[O:32])[CH:7]([NH:23][C:24](=[O:31])[CH:25]([NH2:30])[CH2:26][CH:27]([CH3:29])[CH3:28])[CH2:8][C:9]1[CH:14]=[CH:13][C:12]([O:15][CH2:16][C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=2)=[CH:11][CH:10]=1)([CH3:4])([CH3:3])[CH3:2].[N+:33]([C:36]1[CH:41]=[CH:40][C:39]([S:42](Cl)(=[O:44])=[O:43])=[CH:38][CH:37]=1)([O-:35])=[O:34].C(N(CC)C(C)C)(C)C>CN(C1C=CN=CC=1)C.C1C=CC=CC=1.C(OC)(C)(C)C>[C:1]([O:5][C:6](=[O:32])[CH:7]([NH:23][C:24](=[O:31])[CH:25]([NH:30][S:42]([C:39]1[CH:38]=[CH:37][C:36]([N+:33]([O-:35])=[O:34])=[CH:41][CH:40]=1)(=[O:43])=[O:44])[CH2:26][CH:27]([CH3:28])[CH3:29])[CH2:8][C:9]1[CH:14]=[CH:13][C:12]([O:15][CH2:16][C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=2)=[CH:11][CH:10]=1)([CH3:3])([CH3:2])[CH3:4]
참가 물질실험 절차후처리출처 및 근거반응 노트

참가 물질

7

반응물 3

HCID 74044-Nitrobenzenesulfonyl chlorideHCID 81531DiisopropylethylamineHCID 540817292-(2-Amino-4-methyl-pentanoylamino)-3-(4-benzyloxy-phenyl)-propionic acid tert-butyl ester

생성물 1

HCID 700591343-(4-Benzyloxy-phenyl)-2-[4-methyl-2-(4-nitro-benzenesulfonylamino)-pentanoylamino]-propionic acid tert-butyl ester수율 95%

시약·촉매·용매 3

HCID 14284
4-(Dimethylamino)pyridine
촉매
HCID 241Benzene용매
HCID 15413tert-Butyl methyl ether용매

실험 절차

A solution of the product from Example AI ([S-(R*,R*)]-2-(2-amino-4-methyl-pentanoylamino)-3-(4-benzyloxy-phenyl)-propionic acid tert-butyl ester) (308 mg, 0.70 mmol), 4-nitrobenzenesulfonyl chloride (190 mg, 0.77 mmol), N,N-diisopropylethyl-amine (181 mg, 1.4 mmol) and DMAP (20 mg), in benzene (5 mL) was heated under reflux for 3 hours, then concentrated in vacuo and the residue dissolved in ethyl acetate, and washed with saturated NaHCO3 solution, water, and brine, dried over anhydrous sodium sulfate, and concentrated in vacuo. The tan solid thus obtained was triurated in warm tert-butylmethyl ether, and filtered to give 419 mg (95%) of the title compound as a white solid, mp=121-123° C.

후처리

  1. temperatureunder reflux for 3 hours
  2. concentrationconcentrated in vacuo
  3. dissolutionthe residue dissolved in ethyl acetate
  4. washwashed with saturated NaHCO3 solution, water, and brine
  5. dry with materialdried over anhydrous sodium sulfate
  6. concentrationconcentrated in vacuo
  7. customThe tan solid thus obtained
  8. filtrationfiltered

출처 및 근거

ORD 기록
ord-8b8c24e72b38407abd457f23b161690b
출처 데이터셋
uspto-grants-2002_07
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US06423689B1

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