Spirotetrahydro β-Carbolines (Spiroindolones): A New Class of Potent and Orally Efficacious Compounds for the Treatment of Malaria
作者:Bryan K. S. Yeung、Bin Zou、Matthias Rottmann、Suresh B. Lakshminarayana、Shi Hua Ang、Seh Yong Leong、Jocelyn Tan、Josephine Wong、Sonja Keller-Maerki、Christoph Fischli、Anne Goh、Esther K. Schmitt、Philipp Krastel、Eric Francotte、Kelli Kuhen、David Plouffe、Kerstin Henson、Trixie Wagner、Elizabeth A. Winzeler、Frank Petersen、Reto Brun、Veronique Dartois、Thierry T. Diagana、Thomas H. Keller
DOI:10.1021/jm100410f
日期:2010.7.22
Racemic spiroazepineindole (1) was identified from a phenotypic screen on wild type Plasmodium falciparum with an in vitro IC(50) of 90 nM. Structure-activity relationships for the optimization of 1 to compound 20a (IC(50) = 0.2 nM) including the identification of the active 1R,3S enantiomer and elimination of metabolic liabilities is presented. Improvement of the pharmacokinetic profile of the series translated
A novel series of 2-(3-indolyl)alkylamino-1-(3-chlorophenyl)ethanols was prepared and evaluated for in vitro ability to stimulate cAMP production in Chinese hamster ovary cells expressing cloned human beta(3)-AR. The optically active 30a was found to be the most potent and selective human beta(3)-AR agonist in this series with an EC(50) value of 0.062nM. In addition, 30a selectivity for human beta(3)-AR
Discovery of a Novel and Potent Human and Rat .BETA.3-Adrenergic Receptor Agonist, [3-[(2R)-[[(2R)-(3-Chlorophenyl)-2-hydroxyethyl]amino]propyl]-1H-indol-7-yloxy]acetic Acid
side (RHS, benzene ring) in the 'first generation' beta3-AR agonists BRL 37344 and CL 316243 with a 1H-indole ring gave compound 31 with unique pharmacological properties among beta3-AR agonists. Initial in vitro assays showed that 31 possesses modest rat and human beta3-ARs agonistic activity. Introduction of various substituent into the indole nucleus of 31 afforded a number of compounds with good beta3-ARs