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Ammonium fluoride → 5-Amino-3-[(2R,3R,5S)-3-(1-fluoro-1-methyl-ethyl)-5-(hydroxymethyl)tetrahydrofuran-2-yl]-6H-thiazolo[4,5-d]pyrimidine-2,7-dione
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | Ammonium fluoride | HCID 25516 | — |
| 反応物 | 5-amino-3-[(2R,3R,5S)-5-[[tert-butyl(diphenyl)silyl]oxymethyl]-3-(1-fluoro-1-methyl-ethyl)tetrahydrofuran-2-yl]-6H-thiazolo[4,5-d]pyrimidine-2,7-dione | HCID 137190223 | — |
| 溶媒 | Methanol | HCID 887 | — |
| 生成物 | 5-Amino-3-[(2R,3R,5S)-3-(1-fluoro-1-methyl-ethyl)-5-(hydroxymethyl)tetrahydrofuran-2-yl]-6H-thiazolo[4,5-d]pyrimidine-2,7-dione | HCID 137108697 | 24.2% |
反応手順
A mixture of 5-amino-3-[(2R,3R,5S)-5-[[tert-butyl(diphenyl)silyl]oxymethyl]-3-(1-fluoro-1-methyl-ethyl)tetrahydrofuran-2-yl]-6H-thiazolo[4,5-d]pyrimidine-2,7-dione (compound 40h, 66 mg, 0.12 mmol) and NH4F (133 mg, 3.6 mmol) in methanol was heated under reflux for 1.5 hrs. The resulting mixture was concentrated in vacuo and the residue was purified by preparative HPLC to afford 10 mg of 5-amino-3-[(2R,3R,5S)-3-(1-fluoro-1-methyl-ethyl)-5-(hydroxymethyl)tetrahydrofuran-2-yl]-6H-thiazolo[4,5-d]pyrimidine-2,7-dione (Example 40) as a white solid.
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US09441008B2 |
| 出典データセット | uspto-grants-2016_09 |
| ORD ID | ord-a4d00bd2e89e427383ca0c2294c38e0b |
| 出典メモ | uspto-grants-2016_09 |