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Boc-O-苄基-L-酪氨酸

CAS号2130-96-3

分子式C21H25NO5

分子量371.43

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  • Mass

    MS-IW-6140          
    o-benzyl-N-tert-butoxycarbonyl-L-tyrosine
    C21H25NO5           (Mass of molecular ion:    371)
    

       Source Temperature: 160 °C
       Sample Temperature: 150 °C
       Direct, 75 eV
    

          18.0       4.6
          27.0       1.6
          28.0       2.9
          29.0       2.5
          31.0       2.2
          39.0       4.9
          40.0       1.1
          41.0      15.9
          44.0      14.7
          51.0       1.2
          53.0       1.0
          55.0       3.9
          56.0       8.5
          57.0       6.8
          59.0       8.7
          65.0       4.9
          89.0       1.1
          91.0     100.0
          92.0       8.5
         107.0       3.2
         197.0      37.7
         198.0       6.1
         233.0       2.0
         235.0       3.4
         254.0       1.8
         263.0      25.4
         264.0       4.6
         278.0       5.3
         279.0       1.0
         297.0       2.7
         298.0       1.7
         310.0       1.9
         315.0       1.4
         371.0       2.3
    

400 MHz in CDCl3


  • 1H NMR 399.65 MHz
    C21 H25 N O5 0.041 g : 0.5 ml CDCl3
    O-benzyl-N-tert-butoxycarbonyl-L-tyrosine
    ChemicalStructure
        Assign.     Shift(ppm)
    A 10.5 B 7.402 C 7.364 D 7.311 E 7.10 F 6.909 G 6.47 G 4.97 J 5.017 K 4.58 K 4.34 L *1 3.12 M *1 3.03 M *1 2.86 N 1.416 N 1.299 mixture of internal rotomers

         Hz     ppm     Int.
    

       2965.55   7.421    151
       2963.71   7.416    211
       2957.15   7.400    439
       2956.54   7.398    402
       2955.78   7.396    388
       2950.59   7.383    201
       2949.52   7.381    268
       2947.54   7.376     83
       2942.50   7.363    469
       2940.83   7.359    178
       2936.55   7.348    119
       2934.88   7.344    211
       2928.31   7.328     98
       2926.79   7.324    163
       2924.96   7.319     85
       2922.52   7.313     61
       2919.77   7.306    161
       2916.72   7.299     39
       2914.12   7.292     34
       2912.60   7.288     46
       2839.66   7.106    172
       2831.88   7.086    157
       2765.20   6.920    278
       2756.65   6.898    236
       2005.31   5.018    894
       1992.03   4.985     54
       1983.95   4.965     55
        566.41   1.418   1000
        546.11   1.367     34
        544.43   1.363     33
        543.37   1.360     33
        542.91   1.359     33
        542.60   1.358     33
        542.14   1.357     33
        541.53   1.356     33
        540.92   1.354     32
        540.62   1.353     32
        540.16   1.352     32
        539.70   1.351     32
        519.41   1.300    343
    

in CDCl3



KBr disc



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