関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|
| 反応物 | 4-Methylmorpholine | HCID 7972 | — |
| 反応物 | Isobutyl chloroformate | HCID 62365 | — |
| 反応物 | (4S)-4-{[(benzyloxy)carbonyl]amino}-5-methoxy-5-oxopentanoic acid | HCID 2733408 | — |
| 反応物 | Sodium borohydride | HCID 4311764 | — |
| 溶媒 | Methanol | HCID 887 | — |
| 溶媒 | Tetrahydrofuran | HCID 8028 | — |
| 生成物 | N-Cbz-5-hydroxy-L-norvaline methyl ester | HCID 10588891 | 105% |
反応手順
To a cold (−15° C.) solution of Cbz-Glu-OMe (1.5 g) in THF (70 mL) was added N-methylmorpholine (0.616 mL) followed by isobutyl chloroformate (0.731 mL) dropwise. After 30 min stirring at −15° C., NaBH4 (576 mg) was added, followed MeOH dropwise. The reaction mixture was stirred at −10° C. for 15 min and quenched by the addition of 1M KHSO4 solution. The mixture was extracted with EA. The org. phase was washed with water, dried (Na2SO4) and evaporated off to give the crude product as a colourless oil (1.5 g).
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| 特許番号 | US08058263B2 |
|---|
| 出典データセット | uspto-grants-2011_11 |
|---|
| ORD ID | ord-4f1ce3f10b7442eba7e321d9768f01b5 |
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| 出典メモ | uspto-grants-2011_11 |
|---|
