Ultrasound accelerated conversion of Nα-urethane protected peptide esters to their thiopeptides using P2S5

Vommina V. Sureshbabu, G. Nagendra, R. Venkataramanarao
2008 Ultrasonics sonochemistry  
A fast and efficient synthesis of N a -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.
doi:10.1016/j.ultsonch.2008.04.009 pmid:18524664 fatcat:fwcvz4t4zfa57cymz2fcmshusy