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N-[(arylmethoxy)phenyl] carboxylic acids, hydroxamic acids, tetrazoles, and sulfonyl carboxamides. Potent orally active leukotriene D4 antagonists of novel structure. 1990

J H Musser, and A F Kreft, and R H Bender, and D M Kubrak, and D Grimes, and R P Carlson, and J M Hand, and J Chang
Wyeth-Ayerst Research, Princeton, New Jersey 08543-8000.

Four series of N-[(arylmethoxy)phenyl] compounds were prepared as leukotriene D4 (LTD4) antagonists. In the hydroxamic acid series, methyl 3-(2-quinolinylmethoxy)benzeneacetohydroxamate (Wy-48,422, 20) was the most potent inhibitor of LTD4-induced bronchoconstriction with an oral ED50 of 7.9 mg/kg. Compound 20 also orally inhibited ovalbumin-induced bronchoconstriction in the guinea pig with an ED50 of 3.6 mg/kg. In vitro, against LTD4-induced contraction of isolated guinea pig trachea pretreated with indomethacin and 1-cysteine, 20 produced a pKB value of 6.08. In the sulfonyl carboxamide series, N-[(4-methylphenyl)sulfonyl]-3-(2-quinolinylmethoxy)-benzamide (Wy-49,353, 30) was the most potent antagonist. Compound 30 orally inhibited both LTD4- and ovalbumin-induced bronchoconstriction with ED50s of 0.4 and 20.2 mg/kg, respectively. In vitro, against LTD4-induced contraction of isolated guinea pig trachea, 30 produced a pKB value of 7.78. In the carboxylic acid series, which served as intermediates for the above two series, 3-(2-quinolinylmethoxy)benzeneacetic acid (Wy-46,016, 5) was the most potent inhibitor of LTD4-induced bronchoconstriction (99% at 25 mg/kg, intraduodenally); however, the pKB for this compound was disappointing (5.79). In the tetrazole series, the most potent inhibitor was 2-[[3-(1H-tetrazol-5-ylmethyl)phenoxy]methyl]quinoline (Wy-49,451, 41). The respective inhibitory ED50s were 3.0 mg/kg versus LTD4 and 17.5 mg/kg versus ovalbumin. In the isolated guinea pig trachea, 41 produced a pKB value of 6.70.

UI MeSH Term Description Entries
D009119 Muscle Contraction A process leading to shortening and/or development of tension in muscle tissue. Muscle contraction occurs by a sliding filament mechanism whereby actin filaments slide inward among the myosin filaments. Inotropism,Muscular Contraction,Contraction, Muscle,Contraction, Muscular,Contractions, Muscle,Contractions, Muscular,Inotropisms,Muscle Contractions,Muscular Contractions
D009504 Neutrophils Granular leukocytes having a nucleus with three to five lobes connected by slender threads of chromatin, and cytoplasm containing fine inconspicuous granules and stainable by neutral dyes. LE Cells,Leukocytes, Polymorphonuclear,Polymorphonuclear Leukocytes,Polymorphonuclear Neutrophils,Neutrophil Band Cells,Band Cell, Neutrophil,Cell, LE,LE Cell,Leukocyte, Polymorphonuclear,Neutrophil,Neutrophil Band Cell,Neutrophil, Polymorphonuclear,Polymorphonuclear Leukocyte,Polymorphonuclear Neutrophil
D010047 Ovalbumin An albumin obtained from the white of eggs. It is a member of the serpin superfamily. Serpin B14
D011804 Quinolines
D001986 Bronchial Spasm Spasmodic contraction of the smooth muscle of the bronchi. Bronchospasm,Bronchial Spasms,Bronchospasms,Spasm, Bronchial,Spasms, Bronchial
D002351 Carrageenan A water-soluble extractive mixture of sulfated polysaccharides from RED ALGAE. Chief sources are the Irish moss CHONDRUS CRISPUS (Carrageen), and Gigartina stellata. It is used as a stabilizer, for suspending COCOA in chocolate manufacture, and to clarify BEVERAGES. Carrageenin,iota-Carrageenan,kappa-Carrageenan,lambda-Carrageenan,iota Carrageenan,kappa Carrageenan,lambda Carrageenan
D002621 Chemistry A basic science concerned with the composition, structure, and properties of matter; and the reactions that occur between substances and the associated energy exchange.
D004487 Edema Abnormal fluid accumulation in TISSUES or body cavities. Most cases of edema are present under the SKIN in SUBCUTANEOUS TISSUE. Dropsy,Hydrops,Anasarca
D006168 Guinea Pigs A common name used for the genus Cavia. The most common species is Cavia porcellus which is the domesticated guinea pig used for pets and biomedical research. Cavia,Cavia porcellus,Guinea Pig,Pig, Guinea,Pigs, Guinea
D006877 Hydroxamic Acids A class of weak acids with the general formula R-CONHOH. Hydroxamic Acid,Acid, Hydroxamic,Acids, Hydroxamic

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