title: Structure-activity relationships of xanthene carboxamides, novel CCR1 receptor antagonists.
abstract: The structure-activity relationships of xanthene carboxamide derivatives on the CCR1 receptor binding affinity and the functional antagonist activity were described. Previously, we reported a quaternarized xanthen-9-carboxamide 1 as a potent human CCR1 receptor antagonist that was derived from a xanthen-9-carboxamide lead 2a. Further derivatization of 2a focusing on installing an additional substituent into the xanthene ring resulted in the identification of 2b-1 with IC(50) values of 1.8nM and 13nM in the binding assay using human CCR1 receptors transfected CHO cells and in the functional assay using U937 cells expressing human CCR1 receptors, respectively.
authors.affiliation: Banyu Tsukuba Research Institute, Okubo-3, Tsukuba 300-2611, Ibaraki, Japan. nayaak@banyu.co.jp
authors.forename: Akira
authors.initials: A
authors.lastname: Naya
authors.forename: Makoto
authors.initials: M
authors.lastname: Ishikawa
authors.forename: Kenji
authors.initials: K
authors.lastname: Matsuda
authors.forename: Kenji
authors.initials: K
authors.lastname: Ohwaki
authors.forename: Toshihiko
authors.initials: T
authors.lastname: Saeki
authors.forename: Kazuhito
authors.initials: K
authors.lastname: Noguchi
authors.forename: Norikazu
authors.initials: N
authors.lastname: Ohtake
mesh_terms: D000577:Amides / Q000138:chemical synthesis* / Q000494:pharmacology*; D000818:Animals; D016466:CHO Cells; D002118:Calcium / Q000378:metabolism; D006224:Cricetinae; D004285:Dogs; D006801:Humans; D066298:In Vitro Techniques; D007202:Indicators and Reagents; D009682:Magnetic Resonance Spectroscopy; D008862:Microsomes, Liver / Q000378:metabolism; D051381:Rats; D054389:Receptors, CCR1; D019707:Receptors, Chemokine / Q000037:antagonists & inhibitors* / Q000235:genetics; D013329:Structure-Activity Relationship; D014162:Transfection; D020298:U937 Cells; D014966:Xanthenes / Q000138:chemical synthesis* / Q000494:pharmacology*
chemical_list: D000577:Amides; C515300:CCR1 protein, human; C515302:Ccr1 protein, rat; D007202:Indicators and Reagents; D054389:Receptors, CCR1; D019707:Receptors, Chemokine; D014966:Xanthenes; D002118:Calcium