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Dicyclohexylcarbodiimide → Z-Ser(tBu)-Asn-Leu-OMe

HRID 1076412
ノート
印刷プレビュー

反応式

HRID 1076412 の反応式
[NH2:1][C@H:2]([C:7]([NH:9][C@H:10]([C:15]([O:17][CH3:18])=[O:16])[CH2:11][CH:12]([CH3:14])[CH3:13])=[O:8])[CH2:3][C:4](=[O:6])[NH2:5].[NH:19]([C:30]([O:32][CH2:33][C:34]1[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=1)=[O:31])[C@H:20]([C:27](O)=[O:28])[CH2:21][O:22][C:23]([CH3:26])([CH3:25])[CH3:24].ON1C(=O)CCC1=O.C1(N=C=NC2CCCCC2)CCCCC1>CN(C)C=O>[NH:19]([C:30]([O:32][CH2:33][C:34]1[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=1)=[O:31])[C@H:20]([C:27]([NH:1][C@H:2]([C:7]([NH:9][C@H:10]([C:15]([O:17][CH3:18])=[O:16])[CH2:11][CH:12]([CH3:14])[CH3:13])=[O:8])[CH2:3][C:4](=[O:6])[NH2:5])=[O:28])[CH2:21][O:22][C:23]([CH3:24])([CH3:26])[CH3:25]
参加物反応条件実験手順後処理出典と根拠反応ノート

参加物

6

反応物 4

HCID 10868DicyclohexylcarbodiimideHCID 80170N-HydroxysuccinimideHCID 1715617Z-Ser(tBu)-OHHCID 57097841H-Asn-Leu-OMe

生成物 1

HCID 131710201Z-Ser(tBu)-Asn-Leu-OMe

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

反応条件

温度
0 °C

実験手順

8.90 g of H-Asn-Leu-OMe and 11.0 g of Z-Ser(tBu)-OH are dissolved in 100 ml of freshly distilled dimethylformamide. The solution is cooled to 0°C and 3.90 g of N-hydroxysuccinimide followed by 8.70 g of dicyclohexylcarbodiimide are added. After 30 minutes standing at 0°C and 18 hours at 25°C the precipitated dicyclohexylurea is filtered off and the filtrate is poured into 800 ml of ice water. The crystalline precipitate which hereupon separates out is dried in vacuo at 40°C and then recrystallised from methanol-water. The Z-Ser(tBu)-Asn-Leu-OMe which is hereupon obtained in an analytically pure form melts at melting point 202° - 205°C; [α]D20 =-18° (c = 1.05 in glacial acetic acid).

後処理

  1. additionare added
  2. filtrationthe precipitated dicyclohexylurea is filtered off
  3. additionthe filtrate is poured into 800 ml of ice water
  4. customThe crystalline precipitate which hereupon separates out is dried in vacuo at 40°C
  5. customrecrystallised from methanol-water

出典と根拠

ORDレコード
ord-c70ae3c6a709420d9fc218f19fd2a7bc
出典データセット
uspto-grants-1976_05
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US03956260

反応ノート

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