title: Trisubstituted benzene leukotriene B4 receptor antagonists: synthesis and structure-activity relationships.
abstract: A series of trisubstituted benzenes which demonstrate leukotriene B4 (LTB4, 1) receptor affinity was prepared. Previous trisubstituted benzenes from our laboratory showed high affinity to the LTB4 receptor but demonstrated agonist activity in functional assays. Compound 3a, the initial lead compound of this new series, showed only modest affinity (IC50 = 0.20 microM). However, 3a was a receptor antagonist with no demonstrable agonist activity up to 30 microM. Further modification of the lipid tail and aryl head groups region led to the discovery of 3b (ONO-4057). This compound, free of agonist activity, possesses high affinity to the LTB4 receptor (Ki = 3.7 +/- 0.9 nM).
authors.affiliation: Department of Medicinal Chemistry, Minase Research Institute, Ono Pharmaceutical Co., Ltd., Osaka, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Konno
authors.forename: T
authors.initials: T
authors.lastname: Nakae
authors.forename: S
authors.initials: S
authors.lastname: Sakuyama
authors.forename: Y
authors.initials: Y
authors.lastname: Odagaki
authors.forename: H
authors.initials: H
authors.lastname: Nakai
authors.forename: N
authors.initials: N
authors.lastname: Hamanaka
mesh_terms: D001555:Benzene Derivatives / Q000737:chemistry / Q000494:pharmacology*; D002449:Cell Aggregation / Q000187:drug effects; D006801:Humans; D007975:Leukotriene B4 / Q000378:metabolism; D009504:Neutrophils / Q000166:cytology / Q000378:metabolism; D018102:Receptors, Leukotriene B4 / Q000037:antagonists & inhibitors* / Q000737:chemistry; D013329:Structure-Activity Relationship
chemical_list: D001555:Benzene Derivatives; D018102:Receptors, Leukotriene B4; D007975:Leukotriene B4