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In this new convergent peptide synthetic approach the advantages of the Fmoc and Boc techniques are combined. Boc-protected peptide fragments prepared on 2-chlorotrityl resin by Fmoc-technique were coupled sequentially in solution. As an example, the C-terminal (91-131) part of the agouti protein comprising all the 5 disulfide bridges in the original molecule has been synthesized by this method.
Triisopropylsilylperoxy (5a), triisobutylsilylperoxy oxalate (5b) have been synthesized and their chemiluminescence examined. Upon treatment with fluoride ion, a solution of 5b and 9,10-diphenylanthracene produces a short burst of chemiluminescence which decays with mixed order kinetics characteristic of the emission seen from the reaction of diaryl oxalates, H 2 O 2 and the fluorophore.
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