(S)-3-(3'-chloro-biphenyl-4-yl)-2-((S)-1-ethoxycarbonyl-ethylamino)-propionic acid benzyl ester → (S)-3-(3'-Chloro-[1,1'-biphenyl]-4-yl)-2-(((S)-1-ethoxy-1-oxopropan-2-yl)amino)propanoic acid

HRID 388873ノート

反応式

HRID 388873 の反応式
C([O:8][C:9](=[O:33])[C@@H:10]([NH:25][C@H:26]([C:28]([O:30][CH2:31][CH3:32])=[O:29])[CH3:27])[CH2:11][C:12]1[CH:17]=[CH:16][C:15]([C:18]2[CH:23]=[CH:22][CH:21]=[C:20]([Cl:24])[CH:19]=2)=[CH:14][CH:13]=1)C1C=CC=CC=1>CCOC(C)=O.CO.[Pd]>[Cl:24][C:20]1[CH:19]=[C:18]([C:15]2[CH:14]=[CH:13][C:12]([CH2:11][C@H:10]([NH:25][C@H:26]([C:28]([O:30][CH2:31][CH3:32])=[O:29])[CH3:27])[C:9]([OH:33])=[O:8])=[CH:17][CH:16]=2)[CH:23]=[CH:22][CH:21]=1

参加物

5

反応物 1

HCID 58280560(S)-3-(3'-chloro-biphenyl-4-yl)-2-((S)-1-ethoxycarbonyl-ethylamino)-propionic acid benzyl ester

生成物 1

HCID 58280516(S)-3-(3'-Chloro-[1,1'-biphenyl]-4-yl)-2-(((S)-1-ethoxy-1-oxopropan-2-yl)amino)propanoic acid収率 69.3%

試薬・触媒・溶媒 3

HCID 23938Palladium触媒HCID 887Methanol溶媒HCID 8857Ethyl Acetate溶媒

反応条件

温度
12.5 °C

実験手順

A suspension of (S)-3-(3′-chloro-biphenyl-4-yl)-2-((S)-1-ethoxycarbonyl-ethylamino)-propionic acid benzyl ester (10.0 g, 21.5 mmol) and 5% Pd on carbon (0.914 g) in EtOAc (200 mL) was treated with H2 (balloon) and stirred at 10-15° C. for 1.5 hour and at room temperature for 0.5 hour. The resulted precipitate was dissolved in methanol and filtered through celite pad. The filtrate was concentrated under reduced pressure and the obtained residue was re-crystallized from EtOAc to give (S)-3-(3′-chloro-biphenyl-4-yl)-2-((S)-1-ethoxycarbonyl-ethylamino)-propionic acid (5.6 g). The mother liquor was concentrated under reduced pressure and purified by silica gel column chromatography to give additional amount of (S)-3-(3′-chloro-biphenyl-4-yl)-2-((S)-1-ethoxycarbonyl-ethylamino)-propionic acid (1.4 g). 1H NMR (400 MHz, DMSO-d6) δ 1.13 (t, 3H, J=7.1 Hz), 1.15 (d, 3H, J=6.8 Hz), 2.85 (dd, 1H, J=7.1, 14.1 Hz), 2.93 (dd, 1H, J=6.3, 13.6 Hz), 3.30-3.37 (m, 1H), 3.48 (dd, 1H, J=6.5, 6.5 Hz), 4.03 (q, 2H, J=7.1 Hz), 7.32 (d, 2H, J=8.3 Hz), 7.38-7.43 (m, 1H), 7.48 (dd, 1H, J=7.8, 7.8 Hz), 7.59-7.65 (m, 3H), 7.70 (dd, 1H, J=2.0, 2.0 Hz); MS: m/z (MH+) 376.

後処理

  1. additionwas treated with H2 (balloon)
  2. filtrationfiltered through celite pad
  3. concentrationThe filtrate was concentrated under reduced pressure
  4. customthe obtained residue was re-crystallized from EtOAc

出典と根拠

ORDレコード
ord-1fd58a0175534860ac07733f53e278e7
出典データセット
uspto-grants-2013_02
特許番号
US08377978B2

反応ノート

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