Heterocyclic compounds, their production and use

C - Chemistry – Metallurgy – 07 – D

Patent

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C07D 307/79 (2006.01) A61K 31/343 (2006.01) A61K 31/438 (2006.01) A61K 31/496 (2006.01) A61P 25/28 (2006.01) C07D 491/107 (2006.01)

Patent

CA 2291026

A compound of formula (I): wherein R1 and R2 each is H or a hydrocarbon group which may be substituted, or R1 and R2 form a 3- to 8-membered carbo or heterocyclic ring which may be substituted; R3 is H, a lower alkyl which may be substituted or an aromatic group which may be substituted; R4 is (1) an aromatic group which may be substituted, (2) an aliphatic hydrocarbon group substituted by an aromatic group which may be substitued, which hydrocarbon group may be further substituted or (3) an acyl; X and Y each is oxygen or sulfur which may be oxidized; and ring A is a benzene ring which may be further substituted, or a salt thereof, is useful for an agent for suppressing neurodegeneration.

Composé représenté par la formule (I): dans laquelle R?1¿ et R?2¿ représentent chacun H ou un groupe hydrocarbure pouvant être substitué, ou R?1¿ et R?2¿ constituent un noyau carbo ou hétérocyclique comportant 3 à 8 éléments et pouvant être substitué; R?3¿ représente H, un alkyle inférieur pouvant être substitué ou un groupe aromatique pouvant être substitué; R?4¿ représente (1) un groupe aromatique pouvant être substitué, (2) un groupe hydrocarbure aliphatique substitué par un groupe aromatique pouvant être substitué, ce groupe hydrocarbure pouvant être encore substitué ou (3) un acyle; X et Y représentent chacun oxygène ou soufre pouvant être oxydé; et le noyau A représente un noyau benzène pouvant être encore substitué, ou un de ses sels, utiles en tant qu'agent de suppression de la neurodégénérescence.

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