Diisopropylethylamine → 9-((3aS,4R,6R,6aR)-6-(azidomethyl)-2,2-dimethyltetrahydro-3aH-cyclopenta[d][1,3]dioxol-4-yl)-N-(2,4-dimethoxybenzyl)-9H-purin-6-amine
Reaction equation
[N:1]([CH2:4][C@@H:5]1[C@H:9]2[O:10][C:11]([CH3:14])([CH3:13])[O:12][C@H:8]2[C@H:7]([N:15]2[CH:23]=[N:22][C:21]3[C:16]2=[N:17][CH:18]=[N:19][C:20]=3Cl)[CH2:6]1)=[N+:2]=[N-:3].[CH3:25][O:26][C:27]1[CH:32]=[C:31]([O:33][CH3:34])[CH:30]=[CH:29][C:28]=1[CH2:35][NH2:36].C(N(CC)C(C)C)(C)C>C(O)CCC>[N:1]([CH2:4][C@@H:5]1[C@H:9]2[O:10][C:11]([CH3:14])([CH3:13])[O:12][C@H:8]2[C@H:7]([N:15]2[CH:23]=[N:22][C:21]3[C:16]2=[N:17][CH:18]=[N:19][C:20]=3[NH:36][CH2:35][C:28]2[CH:29]=[CH:30][C:31]([O:33][CH3:34])=[CH:32][C:27]=2[O:26][CH3:25])[CH2:6]1)=[N+:2]=[N-:3]Participants
5
Reactant 3
Product 1
Reagents, catalysts & solvents 1
Conditions
- Temperature
- 80 °C
Procedure
A solution of 9-((3aS,4R,6R,6aR)-6-(azidomethyl)-2,2-dimethyltetrahydro-3aH-cyclopenta[d][1,3]dioxol-4-yl)-6-chloro-9H-purine (1.29 g, 3.69 mmol) and (2,4-dimethoxyphenyl)methanamine (0.71 mL, 4.7 mmol) in 1-butanol (10 mL) was treated with N,N-diisopropylethylamine (0.93 mL, 5.3 mmol) and heated at 80° C. for 16.5 h; HPLC/LC MS indicated conversion to the desired product. The reaction mixture was allowed to cool to rt and the volatiles were removed under the flow of air to afford a brown-orange paste. Purification by column chromatography (2×8 cm silica; 0-10% acetone/CH2Cl2) afforded the title compound (1.72 g, 97%) as a yellow-orange foam/oil: MS (ESI+) for C23H28N8O4 m/z 481.2 (M+H)+.
Sources & evidence
- ORD record
- ord-d60f5f6326a044d7ae1e329a492cf035
- Source dataset
- uspto-grants-2015_08
- Patent number
- US09096634B2
Reaction notes
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