2,5-Disubstituted pyrrolidines: versatile regioselective and diastereoselective synthesis by enamine reduction and subsequent alkylation
作者:Syed Raziullah Hussaini、Mark G. Moloney
DOI:10.1039/b303789d
日期:——
A direct and versatile route enabling the regio- and diastereoselective synthesis of 2,5-disubstitutedpyrrolidines by reduction of enamines derived from pyroglutamic acid is reported.
cis -Selective synthesis of 2,5-disubstituted pyrrolidines
作者:Syed Raziullah Hussaini、Mark G. Moloney
DOI:10.1016/j.tetlet.2003.12.021
日期:2004.2
A concise approach to cis-2,5-disubstituted pyrrolidines is reported, which relies upon N-tert-butoxycarbonylmethyl substitution in a substrate derived from pyroglutamic acid. The method is especially noteworthy since a significant improvement in the conditions for a key Lawesson’s reaction have been established. Regioselective enolate generation and alkylation permits extension of the C-5 side chain