A. V. Il'ina

Bis(pentaluorophenyl) sulfite — A new reagent for the synthesis of activated pentafluorophenyl esters of N-protected amino acids

ConclusionsA method was proposed for the preparation of bis(perfluorophenyl) sulfite, an effective new reagent for the synthesis of pentafluorophenyl esters of N-protected amino acids without racemization.

Simple and direct synthesis of N,N′-disuccinimidyl sulfite

ConclusionsA method has been developed for the synthesis of N,N′-disuccinimidyl sulfite, a highly effective reagent for peptide synthesis, via the reaction of N-hydroxysuccinimide with thionyl chloride in the presence of an organic base.

The use of N-trichloroacetoxyphthalimide in the synthesis of an enkephalin analog with the Tyr-D-Ala-Gly-Ph-NH2 sequence

ConclusionsAn enkephalin analog was synthesized with the sequence Tyr-D-Ala-Gly-Phe-NH2 by using activated N-oxyphthalimide esters and N-trichloroacetoxyphthalimide.

Synthesis of N-hydroxysuccinimide esters of N-protected amino acids and peptides using N,N′-disuccinimidyl sulfite

ConclusionsA method was proposed for the preparation of N,N′-disuccinimidyl sulfite, a new efficient reagent for the synthesis of the N-hydroxysuccinimide esters of N-protected amino acids and peptides, which consists in treating N-trimethylsiloxysuccinimide with thionyl chloride.

Synthesis of leucine-enkephalin using method of polymeric N-hydroxysuccinimide esters

The method of polymeric N-hydroxysuccinimide esters was used to synthesize the free leucine-enkephalin.