Trifluoromethanesulfonic anhydride → HCID 14305051, Verbindung

HRID 37281Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 37281
[N+:1]([C:4]1[CH:38]=[CH:37][C:7]([CH2:8][O:9][C:10]([O:12][C@@H:13]([C@H:15]2[C:21](=[O:22])[N:20]3[C@@H:16]2[CH2:17][C:18](=O)[C@@H:19]3[C:23]([O:25][CH2:26][C:27]2[CH:32]=[CH:31][C:30]([N+:33]([O-:35])=[O:34])=[CH:29][CH:28]=2)=[O:24])[CH3:14])=[O:11])=[CH:6][CH:5]=1)([O-:3])=[O:2].C(N(C(C)C)CC)(C)C.FC(F)(F)S(OS(C(F)(F)F)(=O)=O)(=O)=O.[NH2:63][C:64]1[S:65][CH:66]=[C:67]([C@@H:69]2[CH2:73][C@H:72]([SH:74])[CH2:71][N:70]2[C:75]([O:77][CH2:78][C:79]2[CH:84]=[CH:83][C:82]([N+:85]([O-:87])=[O:86])=[CH:81][CH:80]=2)=[O:76])[N:68]=1>ClCCl>[NH2:63][C:64]1[S:65][CH:66]=[C:67]([C@@H:69]2[CH2:73][C@H:72]([S:74][C:18]3[CH2:17][C@H:16]4[N:20]([C:21](=[O:22])[C@@H:15]4[C@H:13]([O:12][C:10]([O:9][CH2:8][C:7]4[CH:6]=[CH:5][C:4]([N+:1]([O-:3])=[O:2])=[CH:38][CH:37]=4)=[O:11])[CH3:14])[C:19]=3[C:23]([O:25][CH2:26][C:27]3[CH:32]=[CH:31][C:30]([N+:33]([O-:35])=[O:34])=[CH:29][CH:28]=3)=[O:24])[CH2:71][N:70]2[C:75]([O:77][CH2:78][C:79]2[CH:84]=[CH:83][C:82]([N+:85]([O-:87])=[O:86])=[CH:81][CH:80]=2)=[O:76])[N:68]=1

Komponenten

6

Edukt 4

HCID 67749Trifluoromethanesulfonic anhydrideHCID 81531DiisopropylethylamineHCID 143050474-nitrobenzyl (2R,5R,6S)-6-[(1R)-1-(4-nitrobenzyloxycarbonyloxy)ethyl]-3,7-dioxo-1-azabicyclo[3.2.0]heptane-2-carboxylateHCID 18638803(2S,4S)-2-(2-aminothiazol-4-yl)-4-mercapto-1-(4-nitrobenzyloxycarbonyl)pyrrolidine

Produkt 1

HCID 14305051HCID 14305051, VerbindungAusbeute 70 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel2×

Versuchsvorschrift

To a solution of 4-nitrobenzyl (2R,5R,6S)-6-[(1R)-1- (4-nitrobenzyloxycarbonyloxy)ethyl]-3,7-dioxo-1-azabicyclo[3.2.0]heptane-2-carboxylate (1.92 g) in dichloromethane (50 ml) were added N,N-diisopropyl-N-ethylamine (0.76 ml) and trifluoromethanesulfonic anhydride (0.73 ml) at -30° C., and the solution was stirred at the same temperature for 30 minutes. To this solution was added (2S, 4S)-2-(2-aminothiazol-4-yl)-4-mercapto-1- (4-nitrobenzyloxycarbonyl)pyrrolidine (1.13 g) in dichloromethane (20 ml) at -30° C. and the solution was stirred at 0° C. for 3 hours. The mixture was washed in turn with water and brine, dried over magnesium sulfate, and evaporated in vacuo. The oily residue was chromatographed on silica gel (60 g) eluting with a mixture of dichloromethane and acetone (5:1 V/V) to give 4-nitrobenzyl (5R,6S)-3-[(2S,4S)-2-(2-aminothiazol-4-yl) -1-(4-nitrobenzyloxycarbonyl)pyrrolidin-4-ylthio]-6-[(1R)-1-(4-nitrobenzyloxycarbonyloxy) ethyl]-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate (1.85 g).

Aufarbeitung

  1. stirringthe solution was stirred at 0° C. for 3 hours
  2. washThe mixture was washed in turn with water and brine
  3. dry with materialdried over magnesium sulfate
  4. customevaporated in vacuo
  5. customThe oily residue was chromatographed on silica gel (60 g)
  6. washeluting with a mixture of dichloromethane and acetone (5:1 V/V)

Quellen und Nachweise

ORD-Eintrag
ord-b5b4ba9cdfb041fbaf9dd7d8316c63f4
Quelldatensatz
uspto-grants-1995_05
Patentnummer
US05420122

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