反応式
[NH2:1][CH2:2][CH2:3][N:4]1[CH2:9][CH2:8][NH:7][CH2:6][CH2:5]1.[C:10]([O:14][C:15](ON=C(C1C=CC=CC=1)C#N)=[O:16])([CH3:13])([CH3:12])[CH3:11]>O1CCOCC1.O>[C:10]([O:14][C:15]([NH:1][CH2:2][CH2:3][N:4]1[CH2:9][CH2:8][NH:7][CH2:6][CH2:5]1)=[O:16])([CH3:13])([CH3:12])[CH3:11]参加物
実験手順
1-(2-aminoethyl)piperazine (1.29 g, 10 mmol) is dissolved in 20 mL of dioxane:water (1:1) mixture and 2-(tert-butoxycarbonyloxyimino)-2-phenylacetonitrile (2.46 g, 10 mmol) is added. The mixture is then stirred until no starting material is detected on thin layer chromatography. The obtained mixture is fractionally separated by silica gel chromatography, followed by RP-HPLC to obtain 1-[2-tert-butoxycarbonylaminoethyl]piperazine. Following the procedure of Example 6, but replacing 1-benzylpiperazine with 1-[2-tert-butoxycarbonylaminoethyl]piperazine, provides the desired compound. The product of Example 3 (2.1 g, 2.03 mmol), 1-[2-tert-butoxycarbonylaminoethyl]piperazine (1.396 g, 6.09 mmol), and triethylamine (0.85 mL, 6.09 mmol) in 10 mL of methylene chloride are used. The obtained product (1.0 g) is treated with 48%-HF (4 mL) in 35 mL of acetonitrile in the procedure described in Example 5, followed by a carefully deprotection of N-tert-butoxycarbonyl group with 10% trifluoroacetic acid to obtain the pure title compound.
後処理
- additionis added
- customThe obtained mixture is fractionally separated by silica gel chromatography
出典と根拠
- ORDレコード
- ord-d801ae9163a74e1284e45fd1be6ad25e
- 出典データセット
- uspto-grants-1996_06
- 特許番号
- US05530119
関連ノート
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