A short, stereospecific synthesis of dihydrooxazoles from serine and threonine derivatives
作者:Peter Wipf、Chris P. Miller
DOI:10.1016/s0040-4039(00)91572-7
日期:1992.2
Cyclization of serine and threoninederivatives with Burgess reagent provides a one-step, streospecific access to 4,5-dihydrooxazoles. Noteworthy features of this new methodology include mild experimental conditions, and the absence of β-lactam, aziridine, or dehydroaminoacid side products.
An investigation of the mitsunobu reaction in the preparation of peptide oxazolines, thiazolines, and aziridines
作者:Peter Wipf、Chris P. Miller
DOI:10.1016/s0040-4039(00)60949-8
日期:1992.10
e mediated cyclization of serine and allo-threonine derivatives provides peptide oxazolines, whereas cyclization of threonine containing substrates leads to N-acyl aziridines. In the thiopeptide series, only thiazolines are obtained. The presence of a moderately strong base is necessary for the formation of aziridines from threonine peptides.