Total Synthesis and Biological Evaluation of Pederin, Psymberin, and Highly Potent Analogs
作者:Shuangyi Wan、Fanghui Wu、Jason C. Rech、Michael E. Green、Raghavan Balachandran、W. Seth Horne、Billy W. Day、Paul E. Floreancig
DOI:10.1021/ja207331m
日期:2011.10.19
N-acyl aminal and functional groups in the two major subunits on biological activity. These analogs, including a pederin/psymberin chimera, were analyzed for their growth inhibitory effects, revealing several new potent cytotoxins and leading to postulates regarding the molecular conformational and hydrogen bonding patterns that are required for biological activity. Second generation analogs have been
Multicomponent Approach to the Synthesis of Oxidized Amides through Nitrile Hydrozirconation
作者:Shuangyi Wan、Michael E. Green、Jung-Hyun Park、Paul E. Floreancig
DOI:10.1021/ol702184n
日期:2007.12.1
"Oxidized" amides, as represented by acyl aminals and acyl hemiaminals, are integral subunits of several natural products that exhibit useful biological activity. In this paper a multicomponent approach to these groups from acylimine intermediates is demonstrated. The acylimines; are accessed through a sequence of nitrile hydrozirconation and acylation, making this highly versatile amide synthesis useful for a range of applications in target- and diversity-oriented synthesis.