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Development of a novel series of (2-quinolinylmethoxy)phenyl-containing compounds as high-affinity leukotriene D4 receptor antagonists. 2. Effects of an additional phenyl ring on receptor affinity. 1990

F C Huang, and R A Galemmo, and W H Johnson, and G B Poli, and M M Morrissette, and J J Mencel, and J D Warus, and H F Campbell, and G W Nuss, and G W Carnathan
Rorer Central Research, Horsham, Pennsylvania 19044.

This series of reports describe the development of orally active, highly potent, specific antagonists of the peptidoleukotrienes containing a (2-quinolinylmethoxy)phenyl moiety. The compounds reported in this paper contain an additional phenyl ring, which has significantly improved the receptor affinity. The effect of changes in the linkage between the two phenyl rings as well as the orientation of the acidic functional group on biological activity are discussed. Many of these compounds have high affinity to the sulfidopeptide leukotriene D4 receptors with Ki values ranging between 2 and 20 nM and are orally active. Compound 27 [RG 12525, 5-[[2-[[4-(2-quinolinylmethoxy)phenoxy]- methyl]phenyl]methyl]-1H-tetrazole] represents the best combination of in vitro and in vivo biological activity in this series and has been selected for further evaluation in clinical studies of asthma.

UI MeSH Term Description Entries
D008168 Lung Either of the pair of organs occupying the cavity of the thorax that effect the aeration of the blood. Lungs
D010647 Phenyl Ethers Ethers that are linked to a benzene ring structure. Diphenyl Oxide,Diphenyl Oxides,Diphenyl Ethers,Ethers, Diphenyl,Ethers, Phenyl,Oxide, Diphenyl,Oxides, Diphenyl
D011804 Quinolines
D011971 Receptors, Immunologic Cell surface molecules on cells of the immune system that specifically bind surface molecules or messenger molecules and trigger changes in the behavior of cells. Although these receptors were first identified in the immune system, many have important functions elsewhere. Immunologic Receptors,Immunologic Receptor,Immunological Receptors,Receptor, Immunologic,Receptors, Immunological
D001993 Bronchodilator Agents Agents that cause an increase in the expansion of a bronchus or bronchial tubes. Bronchial-Dilating Agents,Bronchodilator,Bronchodilator Agent,Broncholytic Agent,Bronchodilator Effect,Bronchodilator Effects,Bronchodilators,Broncholytic Agents,Broncholytic Effect,Broncholytic Effects,Agent, Bronchodilator,Agent, Broncholytic,Agents, Bronchial-Dilating,Agents, Bronchodilator,Agents, Broncholytic,Bronchial Dilating Agents,Effect, Bronchodilator,Effect, Broncholytic,Effects, Bronchodilator,Effects, Broncholytic
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.
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
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D001393 Azoles Five membered rings containing a NITROGEN atom. Azole
D013189 SRS-A A group of LEUKOTRIENES; (LTC4; LTD4; and LTE4) that is the major mediator of BRONCHOCONSTRICTION; HYPERSENSITIVITY; and other allergic reactions. Earlier studies described a "slow-reacting substance of ANAPHYLAXIS" released from lung by cobra venom or after anaphylactic shock. The relationship between SRS-A leukotrienes was established by UV which showed the presence of the conjugated triene. (From Merck Index, 11th ed) Slow Reacting Substance of Anaphylaxis

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