Diisopropylethylamine → (S)-2-[(S)-3-(4-Allyloxy-phenyl)-2-tert-butoxycarbonylamino-propionylamino]-4-methyl-pentanoic acid methyl ester

HRID 58357ノート

反応式

HRID 58357 の反応式
[C:1]([NH:8][C@H:9]([C:21]([OH:23])=O)[CH2:10][C:11]1[CH:16]=[CH:15][C:14]([O:17][CH2:18][CH:19]=[CH2:20])=[CH:13][CH:12]=1)([O:3][C:4]([CH3:7])([CH3:6])[CH3:5])=[O:2].CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.Cl.[CH3:49][O:50][C:51](=[O:58])[C@H:52]([CH2:54][CH:55]([CH3:57])[CH3:56])[NH2:53].CCN(C(C)C)C(C)C>CN(C=O)C.CCOC(C)=O>[CH3:49][O:50][C:51](=[O:58])[C@@H:52]([NH:53][C:21](=[O:23])[C@@H:9]([NH:8][C:1]([O:3][C:4]([CH3:5])([CH3:6])[CH3:7])=[O:2])[CH2:10][C:11]1[CH:12]=[CH:13][C:14]([O:17][CH2:18][CH:19]=[CH2:20])=[CH:15][CH:16]=1)[CH2:54][CH:55]([CH3:57])[CH3:56]

参加物

7

反応物 4

HCID 81531DiisopropylethylamineHCID 2723695Leucine methyl ester hydrochlorideHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 10853202(2S)-2-{[(tert-butoxy)carbonyl]amino}-3-[4-(prop-2-en-1-yloxy)phenyl]propanoic acid

生成物 1

HCID 86650238(S)-2-[(S)-3-(4-Allyloxy-phenyl)-2-tert-butoxycarbonylamino-propionylamino]-4-methyl-pentanoic acid methyl ester

試薬・触媒・溶媒 2

HCID 6228Dimethylformamide溶媒HCID 8857Ethyl Acetate溶媒

実験手順

N-BOC-O-allyl-tyrosine (obtained from NeoMPS, San Diego, Calif. 92126, USA) (10.0 g, 32.5 mmol), HATU (12.4 g, 35.8 mmol) and leucine methyl ester hydrochloride (5.90 g, 65.0 mmol) were dissolved in anhydrous DMF (50 mL). DIPEA (22.7 mL, 130 mmol) was added and the reaction mixture was stirred at rt for 18 h before being partitioned between EtOAc and 1M hydrochloric acid. The organic phase was then washed sequentially with 1M hydrochloric acid and brine before being dried (MgSO4), filtered and concentrated in vacuo. Purification was achieved using flash chromatography, eluting with a gradient of 1/5 EtOAc/(50/70) petroleum ether to 100% EtOAc to yield a white solid, 8.45 g, 58%. Rf=0.33 (1/3 EtOAc/(50/70) petroleum ether).

後処理

  1. custombefore being partitioned between EtOAc and 1M hydrochloric acid
  2. washThe organic phase was then washed sequentially with 1M hydrochloric acid and brine
  3. dry with materialbefore being dried (MgSO4)
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo
  6. customPurification
  7. washeluting with a gradient of 1/5 EtOAc/(50/70) petroleum ether to 100% EtOAc
  8. customto yield a white solid, 8.45 g, 58%

出典と根拠

ORDレコード
ord-ebff0affdbd3469f82ed0cbf2c5a8dd3
出典データセット
uspto-grants-2016_09
特許番号
US09434762B2

反応ノート

読み込み中…