Peptide analogs of pyracetam as ligands for hypothetical nootropic receptors
作者:T. A. Gudasheva、R. U. Ostrovskaya、S. S. Trofimov、M. Yu. Sosoi、F. V. Ienkina、Yu. V. Burov、A. P. Soldinov
DOI:10.1007/bf00766630
日期:1985.11
A General N-Alkylation Procedure for Ethyl Pyroglutamate
作者:Tiberiu Simandan、Michael B. Smith
DOI:10.1080/00397919608002625
日期:1996.5
Abstract Despite several reported procedures for coupling alkylhalides and 5-oxoproline esters (pyroglutamate derivatives), no general method has been described. The reaction of pyroglutamate with sodiumhydride, in anhydrous THF in the presence of the halide, provides this general and practical alkylation method. Alkylation under phase transfer conditions is a useful, but less general, alternative