2-(2,6-Dioxo-3-piperidyl)-4-(2-methoxyethylamino)isoindoline-1,3-dione → 2-(2,6-Dioxo-piperidin-3-yl)-4-[(5-methyl-furan-2-ylmethyl)-amino]-isoindole-1,3-dione
Reaction equation
[CH3:1][C:2]1[O:6][C:5]([CH2:7][NH:8][C:9]2[CH:17]=[CH:16][CH:15]=[C:11]([C:12]([OH:14])=O)[C:10]=2[C:18]([OH:20])=O)=[CH:4][CH:3]=1.[O:21]=[C:22]1[CH:27]([N:28]2C(=O)C3C(=CC=CC=3NCCOC)C2=O)[CH2:26][CH2:25][C:24](=[O:44])[NH:23]1>>[O:21]=[C:22]1[CH:27]([N:28]2[C:18](=[O:20])[C:10]3[C:11](=[CH:15][CH:16]=[CH:17][C:9]=3[NH:8][CH2:7][C:5]3[O:6][C:2]([CH3:1])=[CH:3][CH:4]=3)[C:12]2=[O:14])[CH2:26][CH2:25][C:24](=[O:44])[NH:23]1Participants
Procedure
3-[(5-Methyl-furan-2-ylmethyl)-amino]-phthalic acid (5 mmol) was treated in the same manner as described above for the synthesis of 2-(2,6-dioxo-piperidin-3-yl)-4-(2-methoxy-ethylamino)-isoindole-1,3-dione. The residue was purified by preparative HPLC (Symmetry C18, isocratic, 35/65 acetonitrile/water) to give 0.31 g (20%) of product as a yellow solid: mp 305–307° C.; 1H NMR (DMSO-d6) δ 11.10 (s, 1H), 7.58 (t, J=7.7 Hz, 1H), 7.18 (d, J=8.6 Hz, 1H), 7.06 (d, J=7.1 Hz, 1H), 6.93 (t, J=6.0 Hz, 1H), 6.22 (d, J=2.9 Hz, 1H), 5.98 (d, J=1.9 Hz, 1H), 5.07 (dd, J=5.3 and 12.5 Hz, 1H), 4.49 (d, J=6.0 Hz, 2H), 2.97–2.82 (m, 1H), 2.62–2.44 (m, 2H), 2.22 (s, 3H), 2.06–1.99 (m, 1H); 13C NMR (DMSO-d6) δ 172.77, 170.02, 168.77, 167.21, 151.04, 150.02, 145.80, 136.04, 132.08, 117.57, 110.96, 109.63, 108.27, 106.34, 48.55, 38.94, 30.95, 22.10, 13.24; Anal. Calcd. For C19H17N3O5: C, 62.12; H, 4.66; N, 11.44. Found: C, 61.75; H, 4.71; N, 11.15.
Workup
- customThe residue was purified by preparative HPLC (Symmetry C18, isocratic, 35/65 acetonitrile/water)
Sources & evidence
- ORD record
- ord-dccebd22b3ec4362a33423fcea0a16f0
- Source dataset
- uspto-grants-2006_08
- Patent number
- US07091353B2
Reaction notes
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