Dimethyl Sulfate → (2R)-2-[N-(4-Chlorobenzenesulfonyl)-N-(4-methylaminobenzyl)amino]-4-methylpentanoic acid amide

HRID 507301ノート

反応式

HRID 507301 の反応式
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([S:8]([N:11]([C@H:20]([CH2:24][CH:25]([CH3:27])[CH3:26])[C:21]([NH2:23])=[O:22])[CH2:12][C:13]2[CH:18]=[CH:17][C:16]([NH2:19])=[CH:15][CH:14]=2)(=[O:10])=[O:9])=[CH:4][CH:3]=1.[CH3:28]CN(CC)CC.COS(OC)(=O)=O>C1(C)C=CC=CC=1>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([S:8]([N:11]([C@H:20]([CH2:24][CH:25]([CH3:27])[CH3:26])[C:21]([NH2:23])=[O:22])[CH2:12][C:13]2[CH:18]=[CH:17][C:16]([NH:19][CH3:28])=[CH:15][CH:14]=2)(=[O:9])=[O:10])=[CH:6][CH:7]=1

参加物

5

反応物 3

HCID 6497Dimethyl SulfateHCID 8471TriethylamineHCID 59001017(2R)-2-[(4-aminobenzyl)-(4-chloro-benzenesulfonyl)amino]-4-methyl-pentanoic acid amide

生成物 1

HCID 59000964(2R)-2-[N-(4-Chlorobenzenesulfonyl)-N-(4-methylaminobenzyl)amino]-4-methylpentanoic acid amide収率 46%

試薬・触媒・溶媒 1

HCID 1140Toluene溶媒

実験手順

A solution of (2R)-2-[N-(4-chlorobenzenesulfonyl)-N-(4-aminobenzyl)amino]-4-methyl-pentanoic acid amide (Example 48, 400 mg, 1 mmol), Et3N (0.16 mL, 1.1 mmol), dimethylsulfate (139 mg, 1.1 mmol) in 25 mL of toluene was stirred at rt for 18 h. The reaction was concentrated, then taken into EtOAc and washed with H2O, brine, dried over K2CO3 and concentrated to give a crude mixture of starting material and product. The material was further purified by flash chromatography (SiO2, 35% EtOAc/hexanes) to afford the title compound, 195 mg, in 46% yield. MS (ESI), (M+H)+ 424.1; 1H NMR (CDCl3) δ 7.65 (d, 2H, J=8.0), 7.58 (d, 2H, J=8.2), 7.47 (d, 2H, J=8.0), 7.31 (d, 2H, J=8.5), 6.24 (br s, 1H), 5.16 (br s, 1H), 4.50 (dd, 2H, J=50, 17), 4.27 (t, 1H, J=10), 2.44 (s, 3H), 1.74-1.83 (m, 1H), 1.25-1.33 (m, 1H), 0.93-1.01 (m, 1H), 0.74 (d, 3H, J=7.0), 0.63 (d, 3H, J=7.0).

後処理

  1. concentrationThe reaction was concentrated
  2. washwashed with H2O, brine
  3. dry with materialdried over K2CO3
  4. concentrationconcentrated
  5. customto give a crude
  6. additionmixture of starting material and product
  7. customThe material was further purified by flash chromatography (SiO2, 35% EtOAc/hexanes)

出典と根拠

ORDレコード
ord-943f5d6a424f491982ed97f7c9222bab
出典データセット
uspto-grants-2010_08
特許番号
US07786122B2

反応ノート

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