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N-methyl-2-pyrrolidone → (2S,4R)-1-(tert-butoxycarbonyl)-4-(3-(benzo[d]thiazol-2-yl)quinoxalin-2-yloxy)pyrrolidine-2-carboxylic acid

HRID 238076
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HRID 238076 반응식
[C:1]([N:8]1[CH2:15][C@H:14]([OH:16])[CH2:13][C@H:9]1[C:10]([OH:12])=[O:11])([O:3][C:4]([CH3:7])([CH3:6])[CH3:5])=[O:2].Cl[C:18]1[C:27]([C:28]2[S:29][CH:30]=[CH:31][CH:32]=2)=[N:26][C:25]2[C:20](=[CH:21][CH:22]=[CH:23][CH:24]=2)[N:19]=1.CC(C)([O-])C.[Na+].C[N:40]1C(=O)[CH2:43][CH2:42][CH2:41]1>>[C:4]([O:3][C:1]([N:8]1[CH2:15][C@H:14]([O:16][C:18]2[C:27]([C:28]3[S:29][C:30]4[CH:31]=[CH:32][CH:43]=[CH:42][C:41]=4[N:40]=3)=[N:26][C:25]3[C:20](=[CH:21][CH:22]=[CH:23][CH:24]=3)[N:19]=2)[CH2:13][C@H:9]1[C:10]([OH:12])=[O:11])=[O:2])([CH3:7])([CH3:6])[CH3:5]
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HCID 13387N-methyl-2-pyrrolidoneHCID 88804(2S,4R)-4-hydroxy-1-[(2-methylpropan-2-yl)oxycarbonyl]pyrrolidine-2-carboxylic acidHCID 28016552-Chloro-3-(2-thienyl)quinoxalineHCID 23676156Sodium t-butoxide

생성물 1

HCID 67296859(2S,4R)-1-(tert-butoxycarbonyl)-4-(3-(benzo[d]thiazol-2-yl)quinoxalin-2-yloxy)pyrrolidine-2-carboxylic acid

실험 절차

(2S,4R)—N-Boc-4-hydroxyproline can be reacted with 2-chloro-3-(thiophen-2-yl)quinoxaline in NMP, in the presence of sodium t-butoxide, to produce (2S,4R)-1-(tert-butoxycarbonyl)-4-(3-(benzo[d]thiazol-2-yl)quinoxalin-2-yloxy)pyrrolidine-2-carboxylic acid. Methyl tertiary butyl ether (MTBE) and water can then be added. The aqueous layer is separated, washed, and then HCl is added, followed by extraction with MTBE. The extracted product can be mixed with diisopropylethylamine (DIPEA) and HATU (CAS #148893-10-1), and then reacted with (1R,2S)-ethyl-1-amino-2-vinylcyclopropanecarboxylate tosylate salt in dimethylformide (DMF) and toluene. The reaction produces (2S,4R)-tert-butyl 2-((1R,2S)-1-(ethoxycarbonyl)-2-vinylcyclopropylcarbamoyl)-4-(3-(benzo[d]thiazol-2-yl)quinoxalin-2-yloxy)pyrrolidine-1-carboxylate, which can be extracted with MTBE and washed with HCl, further extracted, washed, dried, and dissolved in 2-propanol.

출처 및 근거

ORD 기록
ord-3725f732bca24639b9cf73b161e5623f
출처 데이터셋
uspto-grants-2014_02
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08642538B2

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