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Imidazole → 5(S)-(Boc-Amino)-4(S)-(tert-butyldimethylsilyloxy)-6-cyclohexyl-2(R)-[(4-benzyloxyphenyl)methyl]hexanoic acid

HRID 1377202
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인쇄 미리보기

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HRID 1377202 반응식
[C:1]([NH:8][C@@H:9]([CH2:32][CH:33]1[CH2:38][CH2:37][CH2:36][CH2:35][CH2:34]1)[C@@H:10]([OH:31])[CH2:11][C@@H:12]([CH2:16][C:17]1[CH:22]=[CH:21][C:20]([O:23][CH2:24][C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=2)=[CH:19][CH:18]=1)[C:13]([OH:15])=[O:14])([O:3][C:4]([CH3:7])([CH3:6])[CH3:5])=[O:2].[C:39]([Si:43]([CH3:46])([CH3:45])Cl)([CH3:42])([CH3:41])[CH3:40].N1C=CN=C1>CN(C=O)C>[C:1]([NH:8][C@@H:9]([CH2:32][CH:33]1[CH2:38][CH2:37][CH2:36][CH2:35][CH2:34]1)[C@@H:10]([O:31][Si:43]([C:39]([CH3:42])([CH3:41])[CH3:40])([CH3:46])[CH3:45])[CH2:11][C@@H:12]([CH2:16][C:17]1[CH:22]=[CH:21][C:20]([O:23][CH2:24][C:25]2[CH:26]=[CH:27][CH:28]=[CH:29][CH:30]=2)=[CH:19][CH:18]=1)[C:13]([OH:15])=[O:14])([O:3][C:4]([CH3:7])([CH3:6])[CH3:5])=[O:2]
참가 물질실험 절차출처 및 근거반응 노트

참가 물질

5

반응물 3

HCID 795ImidazoleHCID 28928tert-Butyldimethylsilyl chlorideHCID 228742765(S)-(Boc-amino)-4(S)-hydroxy-6-cyclohexyl-2(R)-(4-benzyloxy-benzyl)-hexanoic acid

생성물 1

HCID 228743035(S)-(Boc-Amino)-4(S)-(tert-butyldimethylsilyloxy)-6-cyclohexyl-2(R)-[(4-benzyloxyphenyl)methyl]hexanoic acid

시약·촉매·용매 1

HCID 6228
Dimethylformamide
용매

실험 절차

In analogy with Example 1 j), 28.8 g (54.8 mmol) of 5(S)-(Boc-amino)-4(S)-hydroxy-6-cyclohexyl-2(R)-[(4-benzyloxyphenyl)methyl]hexanoic acid in 288 ml of DMF, are converted into the title compound with 35.8 g (237.6 mmol) of tert-butyldimethylchlorosilane and 30 g (440 mmol) of imidazole. The title compound is purified by column chromatography (SiO2, hexane/ethyl acetate: 4:1 to 1:1); TLC Rf (E)=0.34; tRet (gradient from 75 to 100% (a) in (b) over 20 min)=25.06 min; FAB-MS (M+H+)=526.

출처 및 근거

ORD 기록
ord-e0e174e5becc442c89e49cac0a12197e
출처 데이터셋
uspto-grants-1997_09
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US05663200

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