Methylamine → 3-{2-ethyl-4-[5-(2-ethyl-6-methyl-pyridin-4-yl)-[1,2,4]oxadiazol-3-yl]-6-methyl-phenyl}-N-methyl-propionamide

HRID 2040822노트

반응식

HRID 2040822 반응식
[CH2:1]([C:3]1[CH:8]=[C:7]([C:9]2[N:13]=[C:12]([C:14]3[CH:19]=[C:18]([CH3:20])[N:17]=[C:16]([CH2:21][CH3:22])[CH:15]=3)[O:11][N:10]=2)[CH:6]=[C:5]([CH3:23])[C:4]=1[CH2:24][CH2:25][C:26]([OH:28])=O)[CH3:2].C[CH2:30][N:31](C(C)C)C(C)C.C1CN([P+](ON2N=NC3C=CC=CC2=3)(N2CCCC2)N2CCCC2)CC1.F[P-](F)(F)(F)(F)F.CN>CN(C=O)C.C1COCC1>[CH2:1]([C:3]1[CH:8]=[C:7]([C:9]2[N:13]=[C:12]([C:14]3[CH:19]=[C:18]([CH3:20])[N:17]=[C:16]([CH2:21][CH3:22])[CH:15]=3)[O:11][N:10]=2)[CH:6]=[C:5]([CH3:23])[C:4]=1[CH2:24][CH2:25][C:26]([NH:31][CH3:30])=[O:28])[CH3:2]

참가 물질

7

반응물 4

HCID 6329MethylamineHCID 81531DiisopropylethylamineHCID 2724699PyBOPHCID 592347473-{2-Ethyl-4-[5-(2-ethyl-6-methyl-pyridin-4-yl)-[1,2,4]oxadiazol-3-yl]-6-methyl-phenyl}-propionic acid

생성물 1

HCID 592347563-{2-ethyl-4-[5-(2-ethyl-6-methyl-pyridin-4-yl)-[1,2,4]oxadiazol-3-yl]-6-methyl-phenyl}-N-methyl-propionamide수율 77.5%

시약·촉매·용매 2

HCID 6228Dimethylformamide용매HCID 8028Tetrahydrofuran용매

실험 절차

To a solution of 3-{2-ethyl-4-[5-(2-ethyl-6-methyl-pyridin-4-yl)-[1,2,4]oxadiazol-3-yl]-6-methyl-phenyl}-propionic acid (26 mg, 69 μmol) and DIPEA (27 mg, 207 μmol) in DMF (3 mL) is added PyBOP (40 mg, 76 μmol) at 0° C. The mixture is stirred for 15 min at 0° C. before methylamine (2.4 mg, 76 μmol, 38 μL of a 2 M solution in THF) is added. Stirring is continued for 1 h at 0° C. The reaction is quenched with water (2 mL), and the mixture is diluted with sat. aq. NaHCO3 solution. The mixture is extracted twice with ether. The combined org. extracts are dried over MgSO4, filtered and concentrated. The crude product is purified on prep. TLC plates with heptane:EA 1:4 to give 3-{2-ethyl-4-[5-(2-ethyl-6-methyl-pyridin-4-yl)-[1,2,4]oxadiazol-3-yl]-6-methyl-phenyl}-N-methyl-propionamide (21 mg) as a white solid; LC-MS: tR=0.90 min; [M+1]+=393.45; 1H NMR δ 1.32 (t, J=7.5 Hz, 3 H), 1.40 (t, J=7.8 Hz, 3 H), 2.34-2.41 (m, 2 H), 2.45 (s, 3 H), 2.69 (s, 3 H), 2.77 (q, J=7.5 Hz, 2 H), 2.85 (d, J=4.8 Hz, 3 H), 2.95 (q, J=7.8 Hz, 2 H), 3.07-3.13 (m, 2H), 5.41 (s br, 1 H), 7.76 (s, 2 H), 7.84 (s, 1 H), 7.86 (s, 1 H).

후처리

  1. additionis added
  2. customThe reaction is quenched with water (2 mL)
  3. additionthe mixture is diluted with sat. aq. NaHCO3 solution
  4. extractionThe mixture is extracted twice with ether
  5. dry with materialextracts are dried over MgSO4
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customThe crude product is purified on prep

출처 및 근거

ORD 기록
ord-72b0696b8284431494c3d18663c94701
출처 데이터셋
uspto-grants-2013_11
특허 번호
US08580824B2

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