Nonpeptide Urotensin-II Receptor Antagonists: A New Ligand Class Based on Piperazino-Phthalimide and Piperazino-Isoindolinone Subunits
作者:Edward C. Lawson、Diane K. Luci、Shyamali Ghosh、William A. Kinney、Charles H. Reynolds、Jenson Qi、Charles E. Smith、Yuanping Wang、Lisa K. Minor、Barbara J. Haertlein、Tom J. Parry、Bruce P. Damiano、Bruce E. Maryanoff
DOI:10.1021/jm900683d
日期:2009.12.10
We have discovered two related chemical series of nonpeptide urotensin-II (U-II) receptor antagonists based oil piperazino-phthalimide (5 and 6) and piperazino-isoindolinone (7) scaffolds. These structure types are distinctive from those of U-II receptor antagonist series reported in the literature. Antagonist 7a exhibited single-digit nanomolar potency in rat and human cell-based functional assays, as well as strong binding to the human U-II receptor. In advanced pharmacological testing, 7a blocked the effects of U-II in vitro in a rat aortic ring assay and in vivo in it rat ear-flush model. A discussion of U-II receptor antagonist pharmacophores is presented, and it specifically defined model is suggested from tricycle 13, which has it high degree of conformational constraint.