One-step synthesis of N-acetylcysteine and glutathione derivatives using the Ugi reaction
作者:Alexander G. Zhdanko、Anton V. Gulevich、Valentine G. Nenajdenko
DOI:10.1016/j.tet.2009.04.030
日期:2009.6
Cys–Gly, glutathione, and homoglutathione derivatives were synthesized by the Ugi four-component reaction using various benzylthio aldehydes and ketones as carbonyl building blocks. The scope and limitations of the method were investigated. Formation of imidazoline by-products in the Ugi reaction was discussed. 2,2,2-Trifluoroethanol was shown to be a superior reaction media than methanol in some reactions