1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → tert-butyl (2S,3R)-3-hydroxy-1-phenyl-4-(5-(prop-1-en-2-yl)nicotinamido)butan-2-ylcarbamate

HRID 2071185ノート

反応式

HRID 2071185 の反応式
[CH2:1]=[C:2]([C:4]1[CH:5]=[N:6][CH:7]=[C:8]([CH:12]=1)[C:9]([OH:11])=O)[CH3:3].CCN=C=NCCCN(C)C.C1C=CC2N(O)N=NC=2C=1.[NH2:34][CH2:35][C@@H:36]([OH:53])[C@@H:37]([NH:45][C:46](=[O:52])[O:47][C:48]([CH3:51])([CH3:50])[CH3:49])[CH2:38][C:39]1[CH:44]=[CH:43][CH:42]=[CH:41][CH:40]=1.CCN(C(C)C)C(C)C>ClCCl>[OH:53][C@H:36]([CH2:35][NH:34][C:9](=[O:11])[C:8]1[CH:12]=[C:4]([C:2]([CH3:3])=[CH2:1])[CH:5]=[N:6][CH:7]=1)[C@@H:37]([NH:45][C:46](=[O:52])[O:47][C:48]([CH3:51])([CH3:49])[CH3:50])[CH2:38][C:39]1[CH:44]=[CH:43][CH:42]=[CH:41][CH:40]=1

参加物

7

反応物 5

HCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 757711-HydroxybenzotriazoleHCID 81531DiisopropylethylamineHCID 10333883tert-butyl (2S,3R)-4-amino-3-hydroxy-1-phenylbutan-2-ylcarbamateHCID 686704595-(Prop-1-en-2-yl)nicotinic acid

生成物 1

HCID 86647444tert-butyl (2S,3R)-3-hydroxy-1-phenyl-4-(5-(prop-1-en-2-yl)nicotinamido)butan-2-ylcarbamate収率 53.5%

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒

実験手順

To 5-(prop-1-en-2-yl)nicotinic acid (200 mg, 1.23 mmol) in dichlormethane (10 ml) at rt, EDCI (330 mg, 1.72 mmol) and HOBT (200 mg, 1.48 mmol) were added. After stirring at rt for 10 minutes, tert-butyl (2S,3R)-4-amino-3-hydroxy-1-phenylbutan-2-ylcarbamate (344 mg, 1.23 mmol) was added followed by DIPEA (0.2 ml). After stirring overnight at rt, reaction mixture was worked up as usual and residue was column purified (90% ethylacetate/10% hexanes) to yield 280 mg of tert-butyl (2S,3R)-3-hydroxy-1-phenyl-4-(5-(prop-1-en-2-yl)nicotinamido)butan-2-ylcarbamate, which on stirring with 4N HCl in dioxane for 4 h yields the HCl salt of N-((2R,3S)-3-amino-2-hydroxy-4-phenylbutyl)-5-(prop-1-en-2-yl)nicotinamide.

後処理

  1. stirringAfter stirring overnight at rt
  2. customreaction mixture
  3. custompurified (90% ethylacetate/10% hexanes)

出典と根拠

ORDレコード
ord-18eb0325680e4480bfc472267b5c7856
出典データセット
uspto-grants-2012_10
特許番号
US08299267B2

反応ノート

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