1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → Ethyl 3-[6-(5-{5-fluoro-6-[(1-methylethyl)oxy]-3-pyridinyl}-1,2,4-oxadiazol-3-yl)-1H-indol-3-yl]propanoate

HRID 1512812ノート

反応式

HRID 1512812 の反応式
CCN=C=NCCCN(C)C.C1C=CC2N(O)N=NC=2C=1.[F:22][C:23]1[CH:24]=[C:25]([C:33]([OH:35])=O)[CH:26]=[N:27][C:28]=1[O:29][CH:30]([CH3:32])[CH3:31].O[NH:37]/[C:38](=[N:55]\[H])/[C:39]1[CH:47]=[C:46]2[C:42]([C:43]([CH2:48][CH2:49][C:50]([O:52][CH2:53][CH3:54])=[O:51])=[CH:44][NH:45]2)=[CH:41][CH:40]=1.CCCC[N+](CCCC)(CCCC)CCCC.[F-]>C1COCC1>[F:22][C:23]1[CH:24]=[C:25]([C:33]2[O:35][N:55]=[C:38]([C:39]3[CH:47]=[C:46]4[C:42]([C:43]([CH2:48][CH2:49][C:50]([O:52][CH2:53][CH3:54])=[O:51])=[CH:44][NH:45]4)=[CH:41][CH:40]=3)[N:37]=2)[CH:26]=[N:27][C:28]=1[O:29][CH:30]([CH3:31])[CH3:32]

参加物

7

反応物 5

HCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 757711-HydroxybenzotriazoleHCID 2724141Tetrabutylammonium FluorideHCID 670253325-Fluoro-6-isopropoxynicotinic acidHCID 178506487HCID 178506487、化合物

生成物 1

HCID 59146084Ethyl 3-[6-(5-{5-fluoro-6-[(1-methylethyl)oxy]-3-pyridinyl}-1,2,4-oxadiazol-3-yl)-1H-indol-3-yl]propanoate収率 13.6%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒2 回

実験手順

EDCI (385 mg) and HOBT (330 mg) were added to a solution of 5-fluoro-6-[(1-methylethyl)oxy]-3-pyridinecarboxylic acid (200 mg) in THF (5 mL) at RT. The resulting solution was stirred for 30 mins. Ethyl 3-{6-[(Z)-(hydroxyamino)(imino)methyl]-1H-indol-3-yl}propanoate (D107) (413 mg) in THF (5 mL) was added and the reaction mixture was stirred at RT for 2 hours. TBAF (1.1 g) was then added. The reaction vessel was sealed and heated in Biotage Initiator using initial normal to 120° C. for 2 hours. After cooling, the reaction was quenched with water, and extracted with EtOAc for 3 times. The combined organic solution was washed with brine, and dried over anhydrous sodium sulfate. The dried solution was concentrated. The residue was purified by column chromatography (15% EtOAc in hexane) to afford ethyl 3-[6-(5-{5-fluoro-6-[(1-methylethyl)oxy]-3-pyridinyl}-1,2,4-oxadiazol-3-yl)-1H-indol-3-yl]propanoate (D110) (60 mg) as a pale yellow solid. MS (ES): C23H23FN4O4 requires 438; found 439.2 (M+H+).

後処理

  1. stirringthe reaction mixture was stirred at RT for 2 hours
  2. customThe reaction vessel was sealed
  3. temperatureheated in Biotage Initiator
  4. customnormal to 120° C.
  5. customfor 2 hours
  6. temperatureAfter cooling
  7. customthe reaction was quenched with water
  8. extractionextracted with EtOAc for 3 times
  9. washThe combined organic solution was washed with brine
  10. dry with materialdried over anhydrous sodium sulfate
  11. concentrationThe dried solution was concentrated
  12. customThe residue was purified by column chromatography (15% EtOAc in hexane)

出典と根拠

ORDレコード
ord-4d9c518f29fe4c8ca2f43861661e3273
出典データセット
uspto-grants-2012_07
特許番号
US08217028B2

反応ノート

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