Octyl isocyanate → (R)-tert-butyl 2-(benzyloxycarbonylamino)-3-((R)-2,3-bis(octylcarbamoyloxy)propylthio)propanoate

HRID 2407956ノート

反応式

HRID 2407956 の反応式
[CH2:1]([O:8][C:9]([NH:11][C@@H:12]([CH2:20][S:21][CH2:22][C@H:23]([OH:26])[CH2:24][OH:25])[C:13]([O:15][C:16]([CH3:19])([CH3:18])[CH3:17])=[O:14])=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH2:27]([N:35]=[C:36]=[O:37])[CH2:28][CH2:29][CH2:30][CH2:31][CH2:32][CH2:33][CH3:34]>C1C=CC=CC=1.CN(C1C=CN=CC=1)C>[CH2:1]([O:8][C:9]([NH:11][C@@H:12]([CH2:20][S:21][CH2:22][C@H:23]([O:26][C:36](=[O:37])[NH:35][CH2:27][CH2:28][CH2:29][CH2:30][CH2:31][CH2:32][CH2:33][CH3:34])[CH2:24][O:25][C:36](=[O:37])[NH:35][CH2:27][CH2:28][CH2:29][CH2:30][CH2:31][CH2:32][CH2:33][CH3:34])[C:13]([O:15][C:16]([CH3:17])([CH3:18])[CH3:19])=[O:14])=[O:10])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

参加物

5

反応物 2

HCID 76616Octyl isocyanateHCID 67400883(R)-tert-butyl 2-(benzyloxycarbonylamino)-3-((R)-2,3-dihydroxypropylthio)propanoate

生成物 1

HCID 71294581(R)-tert-butyl 2-(benzyloxycarbonylamino)-3-((R)-2,3-bis(octylcarbamoyloxy)propylthio)propanoate

試薬・触媒・溶媒 2

HCID 142844-(Dimethylamino)pyridine触媒HCID 241Benzene溶媒

反応条件

温度
40 °C

実験手順

A solution of (R)-tert-butyl 2-(benzyloxycarbonylamino)-3-((R)-2,3-dihydroxypropylthio)propanoate (13) was stirred in anhydrous benzene (0.1 M) under nitrogen at room temperature. Octyl isocyanate (2.02 eq) and DMAP (dimethylaminopyridine, 2.02 eq) were added and the resulting mixture heated to 40° C. and stirred overnight. The reaction mixture was concentrated to remove benzene then reconstituted in DCM and purified by flash chromatography on a COMBIFLASH® system (ISCO) using a gradient of 0-50% EtOAc/Hex to afford the title product as a colorless oil.

後処理

  1. concentrationThe reaction mixture was concentrated
  2. customto remove benzene
  3. custompurified by flash chromatography on a COMBIFLASH® system (ISCO)

出典と根拠

ORDレコード
ord-4c67416f7f804977bcb6f1a295aa57ec
出典データセット
uspto-grants-2014_08
特許番号
US08808703B2

反応ノート

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