Novel piperidine derivative

C - Chemistry – Metallurgy – 07 – D

Patent

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C07D 211/22 (2006.01) A61K 31/438 (2006.01) A61K 31/444 (2006.01) A61K 31/4545 (2006.01) A61K 31/465 (2006.01) A61K 31/5386 (2006.01) A61P 1/16 (2006.01) A61P 3/00 (2006.01) A61P 3/04 (2006.01) A61P 3/06 (2006.01) A61P 3/10 (2006.01) A61P 5/48 (2006.01) A61P 9/00 (2006.01) A61P 9/04 (2006.01) A61P 9/10 (2006.01) A61P 9/12 (2006.01) A61P 11/02 (2006.01) A61P 11/16 (2006.01) A61P 13/12 (2006.01) A61P 19/06 (2006.01) A61P 25/00 (2006.01) A61P 25/02 (2006.01) A61P 25/08 (2006.01) A61P 25/14 (2006.01) A61P 25/16

Patent

CA 2609388

Disclosed is a substance having an antagonistic effect on the binding of histamine to a histamine H3 receptor or an inhibitory effect on the activity which a histamine H3 receptor constantly exhibits. A compound represented by the formula (I) or a pharmaceutically acceptable salt thereof: (I) wherein R1 represents a phenyl group which may be substituted or the like and R2 represents a cyano group which may be substituted or the like, or R1 and R2 together form an aliphatic hetetocyclic ring which may be substituted; R3 represents a group represented by the formula (II-1) below; and all of X1 to X4 represent a carbon atom or the like: (II-1) where R4 and R5 represent a lower alkyl group or the like; and m1 represents an integer of 2 to 4.

L~invention décrit une substance ayant un effet antagoniste sur la liaison de l'histamine à un récepteur H3 de l'histamine ou un effet d~inhibition de l'activité qu'un récepteur H3 de l'histamine présente constamment. L~invention concerne un composé représenté par la formule (I) ou son sel pharmaceutiquement acceptable : (I) où R1 représente un groupe phényle qui peut être substitué ou analogues et R2 représente un groupe cyano qui peut être substitué ou analogues, ou R1 et R2 forment conjointement un noyau hétérocyclique aliphatique qui peut être substitué ; R3 représente un groupe représenté par la formule (II-1) ci-dessous ; et X1 à X4 représentent tous un atome de carbone ou analogues : (II-1) où R4 et R5 représentent un groupe alkyle inférieur ou analogues ; et m1 représente un nombre entier de 2 à 4.

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