Pyridine → (4-Nitrophenyl)methyl (2S,4S)-2-[[(aminosulfonyl)amino]methyl]-4-mercapto-1-pyrrolidinecarboxylate

HRID 1034483노트

반응식

HRID 1034483 반응식
[N+:1]([C:4]1[CH:44]=[CH:43][C:7]([CH2:8][O:9][C:10]([N:12]2[CH2:16][C@@H:15]([S:17]C(C3C=CC=CC=3)(C3C=CC=CC=3)C3C=CC=CC=3)[CH2:14][C@H:13]2[CH2:37][NH:38][S:39](=[O:42])(=[O:41])[NH2:40])=[O:11])=[CH:6][CH:5]=1)([O-:3])=[O:2].N1C=CC=CC=1>O1CCCC1.O.ClCCl.CO.S.[N+]([O-])([O-])=O.[Ag+]>[N+:1]([C:4]1[CH:5]=[CH:6][C:7]([CH2:8][O:9][C:10]([N:12]2[CH2:16][C@@H:15]([SH:17])[CH2:14][C@H:13]2[CH2:37][NH:38][S:39](=[O:41])(=[O:42])[NH2:40])=[O:11])=[CH:43][CH:44]=1)([O-:3])=[O:2]

참가 물질

9

반응물 2

HCID 1049PyridineHCID 57161027(2s,4s)-1-p-Nitrobenzyloxycarbonyl-2-sulfamoylaminomethyl-4-tritylthiopyrrolidine

생성물 1

HCID 10200398(4-Nitrophenyl)methyl (2S,4S)-2-[[(aminosulfonyl)amino]methyl]-4-mercapto-1-pyrrolidinecarboxylate수율 63%

시약·촉매·용매 6

HCID 24470Silver Nitrate촉매HCID 402Hydrogen Sulfide용매HCID 887Methanol용매HCID 962Water용매HCID 6344Dichloromethane용매HCID 8028Tetrahydrofuran용매

실험 절차

To a solution of (2S,4S)-1-p-nitrobenzyloxycarbonyl-2-sulfamoylaminomethyl-4-tritylthiopyrrolidine (668 mg: 0.95 mmole) in tetrahydrofuran (6 ml), a solution of pyridine (0.254 ml: 2.7 eq.) and silver nitrate (403 mg: 2.5 eq.) in water (2 ml) is added under ice cooling. The mixture is stirred at room temperature for 1 hour. The reaction mixture is diluted with dichloromethane (3 ml) and methanol (3 ml), and hydrogen sulfide is bubbled through it under ice cooling for 10 minutes. The resulting precipitate is removed by filtering. The filtrate is diluted with dichloromethane, washed with water, dried over magnesium sulfate, and concentrated in vacuo. The residue is purified by silica gel column chromatography (toluene: ethyl acetate) to give (2S,4S)-1-p-nitrobenzyloxycarbonyl-2-sulfamoylaminomethyl-4-mercaptopyrrolidine (233 mg). Yield: 63%. NMR δ(CDCl3 -CD3OD) ppm: 1.42(t, J=7 Hz, 1H), 1.65 to 1.93(m, 1H), 2.48 to 2.70 (m, 1H), 3.05 to 3.63(m, 4H), 3.93 to 4.16(m, 2H), 5.22(s, 2H), 7.53(d, J=8 Hz, 2H), 8.23(d, J=8 Hz, 2H). IR ν (CHCl3) cm-1 : 3276br, 1692, 1607.

후처리

  1. customis bubbled through it under ice cooling for 10 minutes
  2. customThe resulting precipitate is removed
  3. filtrationby filtering
  4. additionThe filtrate is diluted with dichloromethane
  5. washwashed with water
  6. dry with materialdried over magnesium sulfate
  7. concentrationconcentrated in vacuo
  8. customThe residue is purified by silica gel column chromatography (toluene: ethyl acetate)

출처 및 근거

ORD 기록
ord-0207ada31fd342cf86e23cafffcbd290
출처 데이터셋
uspto-grants-1994_05
특허 번호
US05317016

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