1-Benzofuran-5-carbonyl chloride → benzo[b]furan-5-yl 4-chloro-1-(2,3,4,6-tetra-O-acetyl-beta-D-glucopyranosyl)indol-3-yl ketone
Reaction equation
[Cl:1][C:2]1[CH:10]=[CH:9][CH:8]=[C:7]2[C:3]=1[CH:4]=[CH:5][N:6]2[C@@H:11]1[O:28][C@H:27]([CH2:29][O:30][C:31](=[O:33])[CH3:32])[C@@H:22]([O:23][C:24](=[O:26])[CH3:25])[C@H:17]([O:18][C:19](=[O:21])[CH3:20])[C@H:12]1[O:13][C:14](=[O:16])[CH3:15].[O:34]1[CH:38]=[CH:37][C:36]2[CH:39]=[C:40]([C:43](Cl)=[O:44])[CH:41]=[CH:42][C:35]1=2>>[Cl:1][C:2]1[CH:10]=[CH:9][CH:8]=[C:7]2[C:3]=1[C:4]([C:43]([C:40]1[CH:41]=[CH:42][C:35]3[O:34][CH:38]=[CH:37][C:36]=3[CH:39]=1)=[O:44])=[CH:5][N:6]2[C@@H:11]1[O:28][C@H:27]([CH2:29][O:30][C:31](=[O:33])[CH3:32])[C@@H:22]([O:23][C:24](=[O:26])[CH3:25])[C@H:17]([O:18][C:19](=[O:21])[CH3:20])[C@H:12]1[O:13][C:14](=[O:16])[CH3:15]Participants
3
Procedure
4-Chloro-1-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)-indole obtained in Example 1-(3) and benzo[b]furan-5-carbonyl chloride were treated in a manner similar to Example 2-(4) to give benzo[b]furan-5-yl 4-chloro-1-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)indol-3-yl ketone as a colorless powder. APCI-Mass m/Z 626/628 (M+H). 1H-NMR (DMSO-d6) δ 1.74 (s, 3H), 1.97 (s, 3H), 1.98 (s, 3H), 2.03 (s, 3H), 4.10-4.11 (m, 2H), 4.30 (dt, J=9.9, 4.2 Hz, 1H), 5.27 (t, J=9.9 Hz, 1H), 5.54 (t, J=9.6 Hz, 1H), 5.74 (t, J=9.3 Hz, 1H), 6.34 (d, J=9.0 Hz, 1H), 7.06 (d, J=1.3 Hz, 1H), 7.28 (d, J=7.5 Hz, 1H), 7.37 (t, J=8.0 Hz, 1H), 7.75 (d, J=8.7 Hz, 1H), 7.81 (d, J=8.3 Hz, 1H), 7.85 (dd, J=8.6, 1.7 Hz, 1H), 8.12 (d, J=1.4 Hz, 1H), 8.13 (s, 2H).
Sources & evidence
- ORD record
- ord-0e927a78f6554d5e8e71855a4dadbb4b
- Source dataset
- uspto-grants-2011_05
- Patent number
- US07935674B2
Reaction notes
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