Table 3.

Chemical structures, spectral shifts, and nitration chemistry of L-tryptophan derivatives with modified side chains.

Substratea	Structure	Spectral Shift	Nitrationb
6		Type I	++
7		Type I	+
8		Type I	++
9		Type I	++
10		Type I	++
11		Type I	++
12		Type I	ND
13		Type I	ND

^aReaction conditions can be found in the experimental section. Differential UV-visible spectra can be found in Figure S14 and LC-MS chromatograms for nitrated substrates can be found in Figures S4–S9.

^bAbbreviations: not detected (ND).