Novel synthesis of 3-pyrrole substituted ?-lactams via microwave-induced bismuth nitrate-catalyzed reaction
作者:Debasish Bandyopadhyay、Jessica Cruz、Bimal K. Banik
DOI:10.1016/j.tet.2012.06.009
日期:2012.12
Highly stereoselective synthesis of 3-pyrrole substituted β-lactams is accomplished. The first step involves the synthesis of 3-phthalimido substituted β-lactams following Staudinger cycloaddition reaction of acid chloride equivalent with imines. Synthesis of 3-amino β-lactams is achieved via the deprotection of phthalimido group with ethylenediamine. These 3-amino β-lactams are converted to a new
Highly Stereoselective β-Lactam Synthesis Via The Staudinger Reaction Using Polyaromatic Imines
作者:Debasish Bandyopadhyay、Monica Xavier、Bimal K. Banik
DOI:10.1515/hc.2009.15.3.229
日期:2009.1
Introduction We have been actively engaged in the synthesis of ß-lactams as anticancer agents for the last two decades. In continuation of our research, we describe herein stereocontrolled synthesis of a few 3-substituted ß-lactams using polyaromatic imines. Syntheses of these types of ß-lactams by cycloaddition chemistry and their diasteroselectivty of formation have not been explored. Based on our