A Facile Synthesis of Thioacids from N-Acylbenzotriazoles
摘要:
Protected amino/peptide thioacids have been synthesized in pure form in excellent yields and with retention of chirality by using protected aminoacyl- and peptidoylbenzotriazoles as active intermediates.
Arginine thioacid in synthesis of arginine conjugates and peptides
作者:Ravil N. Khaybullin、Siva S. Panda、Saeid Mirzai、Ellen Toneff、Abdullah M. Asiri、C. Dennis Hall、Alan R. Katritzky
DOI:10.1039/c4ra04897k
日期:——
Protected arginine thioacid enables convenient N-acylation with no detectable racemization. We report efficient syntheses of potentially biologically active arginine conjugates and novel arginine-containing di-, tri- and tetrapeptides in good yields without loss of chiral integrity.
Efficient Synthesis of Peptides by Extension at the N- and C-Terminii of Arginine
作者:Alan R. Katritzky、Geeta Meher、Tamari Narindoshvili
DOI:10.1021/jo800805w
日期:2008.9.19
with complete retention of chirality as evidenced by NMR and HPLC analysis. Arginine LL-dipeptides 15a-d were synthesized by extension at the C-terminus of arginine in isolated yield of 66-80%, using benzotriazole activated arginine L-(omega)NO2-Arg-Bt, 13. Our methodology has also been used to synthesize the protected RGD peptide (Cbz(alpha)-L-(omega)NO2-Arg-Gly-L-Asp-(OH)2) 21.
Protected amino/peptide thioacids have been synthesized in pure form in excellent yields and with retention of chirality by using protected aminoacyl- and peptidoylbenzotriazoles as active intermediates.