Synthesis 2011(18): 2995-3005  
DOI: 10.1055/s-0030-1260159
PAPER
© Georg Thieme Verlag Stuttgart ˙ New York

Tri-, Tetra- and Pentapeptidoylbenzotriazoles: Novel Synthetic Intermediates

Abdelmotaal Abdelmajeida,b, Srinivasa R. Talaa, M. S. Amineb, Alan R. Katritzky*a,c
a Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, FL 32611-7200, USA
Fax: +1(352)3929199; e-Mail: katritzky@chem.ufl.edu;
b Department of Chemistry, Faculty of Science, Benha University, Benha 13518, Egypt
c Chemistry Department, King Abdulaziz University, Jeddah 21589, Saudi Arabia
Further Information

Publication History

Received 13 June 2011
Publication Date:
23 August 2011 (online)

Abstract

Conveniently synthesized novel N-(protected α-tri-, tetra­- and pentapeptidoyl)benzotriazoles couple in aqueous aceto­nitrile solution at 0 ˚C with free amino acids, dipeptides, and tripeptides­ to afford N-terminal-protected polypeptides (61-92%) including those containing unprotected OH, SH, and indole NH groups, with no detectable racemization.