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Updated: Jul 4, 2026

Constructing Thioether/Vinyl Sulfide-tethered Helical Peptides Via Photo-induced Thiol-ene/yne Hydrothiolation
Published on: August 1, 2018
Ultrasound accelerated conversion of Nalpha-urethane protected peptide esters to their thiopeptides using P2S5
Vommina V Sureshbabu1, G Nagendra, R Venkataramanarao
1Peptide Research Laboratory, Department of Studies in Chemistry, Central College Campus, Bangalore University, Dr. B. R. Ambedkar Veedhi, Bangalore 560 001, India. hariccb@rediffmail.com
Abstract:
A fast and efficient synthesis of N(alpha)-protected thiopeptide esters from the corresponding peptide esters using P(2)S(5) as thionating agent assisted by ultrasonication has been described. The conversion of peptide bond into thioamide was complete in 20-40 min at rt. The reaction was accomplished without using any base. The products isolated were characterized using (1)H NMR, (13)C NMR and mass spectroscopy.
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