.omega.-[(4,6-Diphenyl-2-pyridyl)oxy]alkanoic acid derivatives: a new family of potent and orally active LTB4 antagonists
摘要:
A series of omega-[(4,6-diphenyl-2-pyridyl)oxy]alkanoic acid derivatives was prepared which inhibited the binding of leukotriene B4 to its receptors on guinea pig spleen membranes and on human polymorphonuclear leukocytes (PMNs) and selectively antagonized the LTB4-induced elastase release in human PMNs. On the basis of these three screens, a structure-activity relationship was investigated. Alpha-Substitution on the carboxylic acid side chain led to only small changes in the binding affinities but greatly enhanced the LTB4 antagonist activity. Substitution on the phenyl rings was also evaluated. The terminal carboxylic acid function can be replaced by a tetrazole ring without loss in activity. The beat in vitro LTB4 antagonists of this series were investigated in vivo in the inhibition of LTB4-induced leukopenia in rabbits. Compound 9b (RP69698) displayed potent LTB4 antagonist activity, after oral administration, with an ED50 value of 6.7 mg/kg.
The present invention relates to HSP90 inhibitors containing fused amino pyridine core that are useful as inhibitors of HSP90 and their use in the treatment of HSP90 related diseases and disorders such as cancer, an autoimmune disease, or a neurodegenerative disease.
This invention relates to compounds having selective LTB.sub.4 antagonist properties, compositions comprising said compounds and methods for the treatment of disorders involving LTB.sub.4 agonist-mediated activity utilizing said compositions wherein the compounds are described by the general formula ##STR1## and pharmaceutically acceptable salts thereof.
This invention relates to compounds having selective LTB.sub.4 antagonist properties. Therapeutic compositions comprising said compounds and methods for the treatment of disorders involving LTB.sub.4 agonist-mediated activity utilizing said compositions wherein the compounds are described by the formula ##STR1## wherein R.sub.4, X, R, Y, R', Q, m and n are herein defined, and pharmaceutically acceptable salts thereof.
The present invention relates to HSP90 inhibitors containing fused amino pyridine core that are useful as inhibitors of HSP90 and their use in the treatment of HSP90 related diseases and disorders such as cancer, an autoimmune disease, or a neurodegenerative disease.