Skip to main content
. Author manuscript; available in PMC: 2013 Jan 1.
Published in final edited form as: J Pept Sci. 2011 Nov 14;18(1):1–9. doi: 10.1002/psc.1403

Figure 2.

Figure 2

Putative mechanism of DTNP-mediated deprotection. (a) Formation of activated DTNP-thioanisole intermediate. (b) Cysteine deprotection brought about by initial attack of cysteine sulfur on activated intermediate to form trivalent sulfonium intermediate, followed by collapse into the 5-Npys intermediate by scavenging of the protecting group fragment.