1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → (S)-methyl 4-(tert-butoxycarbonylamino)-5-(4-iodobenzylamino)-5-oxopentanoate

HRID 333129노트

반응식

HRID 333129 반응식
Cl.[I:2][C:3]1[CH:10]=[CH:9][C:6]([CH2:7][NH2:8])=[CH:5][CH:4]=1.[CH3:11][C:12]([O:15][C:16]([NH:18][C@H:19]([C:26](O)=[O:27])[CH2:20][CH2:21][C:22]([O:24][CH3:25])=[O:23])=[O:17])([CH3:14])[CH3:13].CCN=C=NCCCN(C)C.C1C=CC2N(O)N=NC=2C=1.CCN(C(C)C)C(C)C>C(Cl)Cl>[C:12]([O:15][C:16]([NH:18][C@H:19]([C:26]([NH:8][CH2:7][C:6]1[CH:9]=[CH:10][C:3]([I:2])=[CH:4][CH:5]=1)=[O:27])[CH2:20][CH2:21][C:22]([O:24][CH3:25])=[O:23])=[O:17])([CH3:13])([CH3:11])[CH3:14]

참가 물질

7

반응물 5

HCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 757711-HydroxybenzotriazoleHCID 81531DiisopropylethylamineHCID 7018756(S)-2-((tert-butoxycarbonyl)amino)-5-methoxy-5-oxopentanoic acidHCID 16217505(4-Iodophenyl)methanamine hydrochloride

생성물 1

HCID 68630197(S)-methyl 4-(tert-butoxycarbonylamino)-5-(4-iodobenzylamino)-5-oxopentanoate수율 77%

시약·촉매·용매 1

HCID 6344Dichloromethane용매2회

실험 절차

A solution of 4-iodobenzylamine hydrochloride (2.965 g, 11.0 mmol), Boc-Glu(OMe)-OH.DCHA (4.426 g, 10.0 mmol), EDCI (2.301 g, 10.0 mmol), HOBt (1.351 g, 10.0 mmol) in DCM (100 mL) containing DIPEA (5.23 mL) was stirred at room temperature under nitrogen for 20 h. The reaction mixture was diluted with DCM, washed with 1N HCl, sat. NaHCO3 solution, and brine. The solvent was evaporated under reduced pressure to give a crude product, which was purified by flash chromatography eluting with hexane/ethyl acetate (3:1) to give (S)-methyl 4-(tert-butoxycarbonylamino)-5-(4-iodobenzylamino)-5-oxopentanoate (3.653 g, 77%) as a white solid. 1H NMR (400 MHz, CDCl3) δ 7.65 (d, J=8.4 Hz, 2H), 7.00 (d, J=8.4 Hz, 2H), 6.65 (s, 1H), 5.24 (brs, 1H), 4.39 (t, J=5.4 Hz, 2H), 4.15 (m, 1H), 3.70 (s, 3H), 2.57-2.37 (m, 2H), 2.20-2.11 (m, 1H), 1.99-1.90 (m, 1H), 1.44 (s, 9H); MS (ESI), 499 (M+Na)+.

후처리

  1. washwashed with 1N HCl, sat. NaHCO3 solution, and brine
  2. customThe solvent was evaporated under reduced pressure
  3. customto give a crude product, which
  4. customwas purified by flash chromatography
  5. washeluting with hexane/ethyl acetate (3:1)

출처 및 근거

ORD 기록
ord-9e77cf35d80a4badbc364a6754987d85
출처 데이터셋
uspto-grants-2014_11
특허 번호
US08877970B2

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