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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
ノート
印刷プレビュー

反応式

HRID 2230319 の反応式
[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]
参加物実験手順後処理出典と根拠反応ノート

参加物

7

反応物 3

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

生成物 1

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

試薬・触媒・溶媒 3

HCID 14284
4-(Dimethylamino)pyridine
触媒
HCID 241Benzene溶媒
HCID 15413tert-Butyl methyl ether溶媒

実験手順

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.

後処理

  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

出典と根拠

ORDレコード
ord-8b8c24e72b38407abd457f23b161690b
出典データセット
uspto-grants-2002_07
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US06423689B1

反応ノート

読み込み中…

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