Table 5.
Chemical structures, spectral shifts, and nitration chemistry of L-tryptophan derivatives with modified amino acid motifs.
| Substratea | Structure | Spectral Shift | Nitrationb |
|---|---|---|---|
| 19 |
|
Type I | ND |
| 20 |
|
Type II | ND |
| 21 |
|
Type I | ND |
| 22 |
|
Type I | ND |
| 23 |
|
Type II | ND |
| 24 |
|
Type I | ++ |
| 25 |
|
Type II | ND |
| 26c |
|
Type I | ND |
| 27c |
|
Type I | ++ |
| 28 |
|
Type I | ND |
| 29 |
|
Type I | ++ |
a
Reaction conditions can be found in the experimental section. Differential UV-visible spectra can be found in Figure S15 and LC-MS chromatograms for nitrated substrates can be found in Figures S10–S12.
b
Abbreviations: not detected (ND).
c
Purified protein was used.