Synthetic Access to 3-Substituted Pyroglutamic Acids from Tetramate Derivatives of Serine, Threonine, <i>allo</i>-Threonine, and Cysteine
作者:Halima Bagum、Kirsten E. Christensen、Miroslav Genov、Alexander Pretsch、Dagmar Pretsch、Mark G. Moloney
DOI:10.1021/acs.joc.9b01432
日期:2019.8.16
A general route which provides direct access to pyroglutamates from tetramates, making use of Suzuki coupling on an enol mesylate, followed by reduction, is reported. This work permits direct scaffold hopping from tetramate to substituted pyroglutamates. Some compounds in the library showed modest antibacterial activity against Gram-positive bacteria.
Stereoselectivity in the Reduction of Bicyclic Tetramates
作者:Mark Moloney、Laia Josa-Culleré、Amber Thompson
DOI:10.1055/s-0035-1561942
日期:——
The reduction of bicyclic tetramates can be achieved with high levels of diastereocontrol, but small changes in the substitution of the bicyclic lactam system can lead to changes in the steric bias of the concave/convex system. The tetramates and pyroglutamates prepared in this work exhibited limited antibacterial activity.
Novel chiral pyrrolidinone scaffolds derived from threonine with antibacterial activity
作者:Muhammad Anwar、Andrew R. Cowley、Mark G. Moloney
DOI:10.1016/j.tetasy.2010.04.064
日期:2010.7
The synthesis of chiral pyrrolidinones derived from threonine, making use of a Dieckmann or aldol ring closure, is described. Compounds were found to exhibit antibacterial activity, for which the correlation with various physiochemical parameters was examined. This chiral tetramate scaffold may provide a useful template for fragment-based drug design providing rapid access to novel antibacterial compound libraries. (C) 2010 Elsevier Ltd. All rights reserved.