Diisopropylethylamine → (2S,3R)-benzyl 2-((S)-2-((tert-butoxycarbonyl)amino)-3-hydroxypropanamido)-3-hydroxy-3-(4-methoxyphenyl)propanoate

HRID 58809

反応式

HRID 58809 の反応式
CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.CCN(C(C)C)C(C)C.[NH2:34][C@@H:35]([C@H:46]([OH:55])[C:47]1[CH:52]=[CH:51][C:50]([O:53][CH3:54])=[CH:49][CH:48]=1)[C:36]([O:38][CH2:39][C:40]1[CH:45]=[CH:44][CH:43]=[CH:42][CH:41]=1)=[O:37].[NH:56]([C:63]([O:65][C:66]([CH3:69])([CH3:68])[CH3:67])=[O:64])[C@H:57]([C:60](O)=[O:61])[CH2:58][OH:59]>CN(C=O)C>[C:66]([O:65][C:63]([NH:56][C@@H:57]([CH2:60][OH:61])[C:58]([NH:34][C@@H:35]([C@H:46]([OH:55])[C:47]1[CH:52]=[CH:51][C:50]([O:53][CH3:54])=[CH:49][CH:48]=1)[C:36]([O:38][CH2:39][C:40]1[CH:41]=[CH:42][CH:43]=[CH:44][CH:45]=1)=[O:37])=[O:59])=[O:64])([CH3:69])([CH3:68])[CH3:67]

参加物

6

反応物 4

HCID 81531DiisopropylethylamineHCID 98766N-[tert-butoxycarbonyl]-L-serineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 117607803(2S,3R)-benzyl 2-amino-3-hydroxy-3-(4-methoxyphenyl)propanoate

生成物 1

HCID 131737019(2S,3R)-benzyl 2-((S)-2-((tert-butoxycarbonyl)amino)-3-hydroxypropanamido)-3-hydroxy-3-(4-methoxyphenyl)propanoate収率 93.8%

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

実験手順

Sequentially HATU (645 mg, 1.70 mmol) and DIEA (0.99 mL, 5.7 mmol) were added to a 0° C. solution of (2S,3R)-benzyl 2-amino-3-hydroxy-3-(4-methoxyphenyl)propanoate (HCl salt, 477 mg, 1.41 mmol) and Boc-Ser-OH (290 mg, 1.41 mmol) in DMF (8 mL). The reaction mixture was allowed to warm to ambient temperature and stirred for 30 min. The mixture was concentrated and the residue was purified by flash column chromatography on silica gel (petroleum ether/EtOAc=2:1) twice to afford (2S,3R)-benzyl 2-((S)-2-((tert-butoxycarbonyl)amino)-3-hydroxypropanamido)-3-hydroxy-3-(4-methoxyphenyl)propanoate (646 mg, 93% yield) as a colorless solid.

後処理

  1. concentrationThe mixture was concentrated
  2. customthe residue was purified by flash column chromatography on silica gel (petroleum ether/EtOAc=2:1) twice

出典と根拠

ORDレコード
ord-514e7be395af4c72920394a73b5673db
出典データセット
uspto-grants-2016_09
特許番号
US09434761B2

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