3,5-Difluoro-4-methoxybenzoic acid → (2R,4S)-5-biphenyl-4-yl-4-(3,5-difluoro-4-methoxy-benzoylamino)-2-methyl-pentanoic acid ethyl ester

HRID 881842ノート

反応式

HRID 881842 の反応式
Cl.[CH2:2]([O:4][C:5](=[O:24])[C@H:6]([CH3:23])[CH2:7][C@H:8]([NH2:22])[CH2:9][C:10]1[CH:15]=[CH:14][C:13]([C:16]2[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=2)=[CH:12][CH:11]=1)[CH3:3].[F:25][C:26]1[CH:27]=[C:28]([CH:32]=[C:33]([F:37])[C:34]=1[O:35][CH3:36])[C:29](O)=[O:30].CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F>C(Cl)Cl.CN(C=O)C>[CH2:2]([O:4][C:5](=[O:24])[C@H:6]([CH3:23])[CH2:7][C@H:8]([NH:22][C:29](=[O:30])[C:28]1[CH:32]=[C:33]([F:37])[C:34]([O:35][CH3:36])=[C:26]([F:25])[CH:27]=1)[CH2:9][C:10]1[CH:11]=[CH:12][C:13]([C:16]2[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=2)=[CH:14][CH:15]=1)[CH3:3]

参加物

6

反応物 3

HCID 27369873,5-Difluoro-4-methoxybenzoic acidHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 25017086(2R,4S)-4-amino-5-(biphenyl-4-yl)-2-methylpentanoic acid ethyl ester hydrochloride

生成物 1

HCID 59608113(2R,4S)-5-biphenyl-4-yl-4-(3,5-difluoro-4-methoxy-benzoylamino)-2-methyl-pentanoic acid ethyl ester収率 94.9%

試薬・触媒・溶媒 2

HCID 6228Dimethylformamide溶媒HCID 6344Dichloromethane溶媒

実験手順

To a solution of (2R,4S)-4-amino-5-biphenyl-4-yl-2-methyl-pentanoic acid ethyl ester hydrochloride salt (200 mg, 0.58 mmol) in CH2Cl2 (2 mL) and DMF (2 mL) at rt is added 3,5-difluoro-4-methoxy benzoic acid (108 mg, 0.58 mmol) followed by an addition of TEA (0.32 mL, 2.3 mmol) and HATU (262 mg, 0.69 mmol). The mixture is stirred at r.t. for 4 hours and quenched with saturated NaHCO3 and diluted in ethyl acetate. The organic layer is washed with water, brine, dried over MgSO4, filtered, and concentrated under reduced pressure. The obtained material is purified by preparative silica gel thin-layer chromatography plates (eluent: EtOAc/hepane=3/2) to give 265 mg of (2R,4S)-5-biphenyl-4-yl-4-(3,5-difluoro-4-methoxy-benzoylamino)-2-methyl-pentanoic acid ethyl ester.

後処理

  1. customquenched with saturated NaHCO3
  2. additiondiluted in ethyl acetate
  3. washThe organic layer is washed with water, brine
  4. dry with materialdried over MgSO4
  5. filtrationfiltered
  6. concentrationconcentrated under reduced pressure
  7. customThe obtained material is purified by preparative silica gel thin-layer chromatography plates (eluent: EtOAc/hepane=3/2)

出典と根拠

ORDレコード
ord-e7613f86540e4215a29ba4c3e6b028a9
出典データセット
uspto-grants-2015_03
特許番号
US08993631B2

反応ノート

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