title: Developing novel C-4 analogues of pyrrole-based antitubulin agents: weak but critical hydrogen bonding in the colchicine site.
abstract: The synthesis, biological evaluation and molecular modeling of a series of pyrrole compounds related to 3,5-dibromo-4-(3,4-dimethoxyphenyl)-1H-pyrrole-2-carboxylic acid that evaluates and optimizes C-4 substituents are reported. The key factor for microtubule depolymerization activity appears to be the presence of an appropriately positioned acceptor for Cys241β in the otherwise hydrophobic subpocket A.
authors: Department of Medicinal Chemistry & Institute for Structural Biology and Drug Discovery, Virginia Commonwealth University, Richmond, Virginia, USA 23298-0540.
authors: Chenxiao
authors: C
authors: Da
authors: Department of Chemistry, Gottwald Center for the Sciences, University of Richmond, Richmond, Virginia, USA 23173.
authors: Nakul
authors: N
authors: Telang
authors: Department of Chemistry, Gottwald Center for the Sciences, University of Richmond, Richmond, Virginia, USA 23173.
authors: Kayleigh
authors: K
authors: Hall
authors: Department of Chemistry, Gottwald Center for the Sciences, University of Richmond, Richmond, Virginia, USA 23173.
authors: Emily
authors: E
authors: Kluball
authors: Department of Chemistry, Gottwald Center for the Sciences, University of Richmond, Richmond, Virginia, USA 23173.
authors: Peter
authors: P
authors: Barelli
authors: Department of Chemistry, Gottwald Center for the Sciences, University of Richmond, Richmond, Virginia, USA 23173.
authors: Kara
authors: K
authors: Finzel
authors: Department of Chemistry, Gottwald Center for the Sciences, University of Richmond, Richmond, Virginia, USA 23173.
authors: Xin
authors: X
authors: Jia
authors: Department of Chemistry, Gottwald Center for the Sciences, University of Richmond, Richmond, Virginia, USA 23173.
authors: John T
authors: JT
authors: Gupton
authors: Department of Pharmacology, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA 78229-3900.
authors: Susan L
authors: SL
authors: Mooberry
authors: Department of Medicinal Chemistry & Institute for Structural Biology and Drug Discovery, Virginia Commonwealth University, Richmond, Virginia, USA 23298-0540.
authors: Glen E
authors: GE
authors: Kellogg