Saturday, October 27, 2007 - 10:40 AM
Redbud C (Greenville Hyatt Regency Hotel)
740

Design Synthesis and Biological Evaluation of Biomimmetic Analogues of Colchicine: α-2,3,4-Trimethoxyphenyl-β-Acetamido Naphthalene

Anthony J. Fowler1, Craig Ogle2, James P. Snyder3, and Ana Alcaraz3. (1) University of North Carolina at Charlotte, Charlotte, NC, (2) UNC Charlotte, Charlotte, NC, (3) Emory University, Atlanta, GA

(-)-Colchicine is a naturally occurring alkaloid which exerts its physiological activity at a highly conserved site located on cellular α-β tubulin dimers. It is currently believed that (-)-colchicine prevents the long range polymerization of tubulin filaments thus enabling a G2/M cell cycle arrest and ultimately apoptosis – a process typically absent in cancerous cellular division. Although (-)-colchicine has been shown to effectively induce apoptosis in cell culture, the low therapeutic index of (-)-colchicine has limited its application to a mere handful of therapeutic applications. Currently, we are pursuing a small molecular library of rotationally restricted bi-aryl compounds capable of mimicking the tubulin binding of (-)-colchicine. Modeled on the perceived pharmacophore of (-)-colchicine, the title compound (fig. 1) has been shown to effectively induce apoptosis in the rat-1 cell line at concentrations similar to (-)-colchicine. Further, molecular modeling of the title compound using Glide XP has predicted an energetically favorable binding for only one of the conformationally restricted enantiomers at the (-)-colchicine binding site. Currently, several compounds related to the title compound have been synthesized and will be discussed.