反応式
[NH2:1][N:2]1[CH:6]=[CH:5][CH:4]=[CH:3]1.[C:7]([NH:17][C@H:18]([C:21](O)=[O:22])[CH2:19][OH:20])([O:9][CH2:10][C:11]1[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1)=[O:8].C1CCC(N=C=NC2CCCCC2)CC1>C(Cl)Cl.CN(C)C=O>[C:11]1([CH2:10][O:9][C:7](=[O:8])[NH:17][C@@H:18]([CH2:21][OH:22])[C:19](=[O:20])[NH:1][N:2]2[CH:6]=[CH:5][CH:4]=[CH:3]2)[CH:12]=[CH:13][CH:14]=[CH:15][CH:16]=1参加物
6
実験手順
To a solution of 1-aminopyrrole (3.28 g) and carbobenzyloxy-L-serine (9.57 g) in 100 ml of dry DCM and 10 ml of dry dimethylformamide was added DCC (10.0 g) at 0° C. After 10 minutes the ice bath was removed and the reaction mixture was stirred at room temperature overnight. The precipitate was filtered and stirred in boiling ethyl acetate. The mixture was filtered and the filtrate was combined with the filtrate of the reaction mixture and evaporated to dryness. The residue was purified by flash column chromatography (silica gel, DCM/methanol 20:1). The appropriate fractions were concentrated and the residue recrystallized from ethyl acetate to afford 7.48 g of the product as crystals, m.p. 163°-164° C.
後処理
- customAfter 10 minutes the ice bath was removed
- filtrationThe precipitate was filtered
- stirringstirred
- filtrationThe mixture was filtered
- customevaporated to dryness
- customThe residue was purified by flash column chromatography (silica gel, DCM/methanol 20:1)
- concentrationThe appropriate fractions were concentrated
- customthe residue recrystallized from ethyl acetate
出典と根拠
- ORDレコード
- ord-5ac3fc4d12bd452fb2c705c10ffb9334
- 出典データセット
- uspto-grants-1995_06
- 特許番号
- US05428053
関連ノート
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