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llms.txt · MCP 가이드개인정보처리방침 · 이용약관 · 지원v1.8.0
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[(3S)-1,2,3,4-tetrahydroisoquinolin-3-yl]methanol → (R)-methyl 2-(tert-butoxycarbonylamino)-2-(2-((S)-3-(hydroxymethyl)-3,4-dihydroisoquinolin-2(1H)-yl)ethyl)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)hexanoate

HRID 579481
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HRID 579481 반응식
[C:1]([O:5][C:6]([NH:8][C@@:9]([CH2:27][CH:28]=O)([CH2:14][CH2:15][CH2:16][CH2:17][B:18]1[O:22][C:21]([CH3:24])([CH3:23])[C:20]([CH3:26])([CH3:25])[O:19]1)[C:10]([O:12][CH3:13])=[O:11])=[O:7])([CH3:4])([CH3:3])[CH3:2].[CH2:30]1[C:39]2[C:34](=[CH:35][CH:36]=[CH:37][CH:38]=2)[CH2:33][C@@H:32]([CH2:40][OH:41])[NH:31]1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>ClCCCl>[C:1]([O:5][C:6]([NH:8][C@@:9]([CH2:27][CH2:28][N:31]1[C@H:32]([CH2:40][OH:41])[CH2:33][C:34]2[C:39](=[CH:38][CH:37]=[CH:36][CH:35]=2)[CH2:30]1)([CH2:14][CH2:15][CH2:16][CH2:17][B:18]1[O:19][C:20]([CH3:26])([CH3:25])[C:21]([CH3:24])([CH3:23])[O:22]1)[C:10]([O:12][CH3:13])=[O:11])=[O:7])([CH3:4])([CH3:3])[CH3:2]
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참가 물질

5

반응물 3

HCID 776757[(3S)-1,2,3,4-tetrahydroisoquinolin-3-yl]methanolHCID 5049666Sodium triacetoxyborohydrideHCID 71600280(R)-methyl 2-(tert-butoxycarbonylamino)-2-(2-oxoethyl)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)hexanoate

생성물 1

HCID 66833499(R)-methyl 2-(tert-butoxycarbonylamino)-2-(2-((S)-3-(hydroxymethyl)-3,4-dihydroisoquinolin-2(1H)-yl)ethyl)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)hexanoate수율 93.2%

시약·촉매·용매 1

HCID 111,2-Dichloroethane용매

실험 절차

A solution of (R)-methyl 2-(tert-butoxycarbonylamino)-2-(2-oxoethyl)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)hexanoate (0.148 g, 0.358 mmol, 1.0 equiv.) and (S)-(1,2,3,4-tetrahydroisoquinolin-3-yl)methanol (0.088 g, 0.54 mmol, 1.5 equiv.) in 1,2-dichloroethane (0.34 mL, 0.5 M) was treated with sodium triacetoxyborohydride (0.19 g, 0.90 mmol, 2.5 equiv) in one portion. After stirring for 1.5 h, the reaction mixture was quenched with saturated aqueous NaHCO3 (1 mL) and stirred for an additional 5 min. The resulting mixture was added to a separatory funnel, diluted with saturated aqueous NaCl (5 mL) and extracted with dichloromethane (2×10 mL). The organic layer was dried over MgSO4, filtered and concentration under reduced pressure. Purification by flash column chromatography eluting with 5% methanol in chloroform gave (R)-methyl 2-(tert-butoxycarbonylamino)-2-(2-((S)-3-(hydroxymethyl)-3,4-dihydroisoquinolin-2(1H)-yl)ethyl)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)hexanoate as a pale yellow oil (0.187 g, 93%). Rf 0.52 (10% methanol in dichloromethane); 1H NMR (CDCl3, 300 MHz) δ 7.15-7.08 (m, 2H), 7.07-6.98 (m, 2H), 5.90 (s, 1H), 3.78 (d, J=16.2 Hz, 1H), 3.70 (s, 3H), 3.60-3.47 (m, 2H), 3.04-2.93 (m, 1H), 2.92-2.82 (m, 1H), 2.71-2.60 (m, 1H), 2.56-2.38 (m, 2H), 2.37-2.23 (m, 1H), 2.21-2.10 (m, 1H), 1.77-1.63 (m, 1H), 1.42 (s, 9H), 1.43-1.26 (m, 3H), 1.23 (s, 12H), 1.22-1.16 (m, 1H), 0.99-0.82 (m, 2H), 0.74 (t, J=7.5 Hz, 2H); ESI-LCMS m/z calcd for C30H49BN2O7: expected 560.4. found 561.4 (M+H)+.

후처리

  1. customthe reaction mixture was quenched with saturated aqueous NaHCO3 (1 mL)
  2. stirringstirred for an additional 5 min
  3. additionThe resulting mixture was added to a separatory funnel
  4. additiondiluted with saturated aqueous NaCl (5 mL)
  5. extractionextracted with dichloromethane (2×10 mL)
  6. dry with materialThe organic layer was dried over MgSO4
  7. filtrationfiltered
  8. concentrationconcentration under reduced pressure
  9. customPurification by flash column chromatography
  10. washeluting with 5% methanol in chloroform

출처 및 근거

ORD 기록
ord-f04a63e1c6484f84bc1ce2e1f2f2549e
출처 데이터셋
uspto-grants-2015_05
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US09040703B2

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