1,4-dihydropyridine derivatives

C - Chemistry – Metallurgy – 07 – D

Patent

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Details

C07D 401/12 (2006.01) A61K 31/445 (2006.01) A61K 31/495 (2006.01) A61K 31/535 (2006.01) C07D 211/90 (2006.01) C07D 401/14 (2006.01) C07D 471/04 (2006.01)

Patent

CA 2272945

1,4-Dihydropyridine derivatives of general formula (I); and antagonists against carcinostatic tolerance and potentiators for carcinostatics containing the derivatives or pharmacologically acceptable salts or hydrates thereof as the active ingredient, wherein R1 is optionally substituted phenyl or heterocyclic group; R2 is C1-C5 lower alkyl; R3 is optionally substituted C2- C8 alkyl, alkenyl or alkynyl or optionally substituted cycloalkyl; R4 is -A- R5; A is C2-C8 alkylene or optionally substituted C2-C8 alkenylene; and R5 is optionally substituted pyridyl, pyridylcarbonyl or piperazinyl.

Dérivés de 1,4-dihydropyridine représentés par la formule (I) et antagonistes contre la tolérance des médicaments cancérostatiques et agents de potentialisation de ces médicaments cancérostatiques contenant ces dérivés ou leurs sels ou hydrates acceptables sur le plan pharmacologique en tant qu'ingrédient actif dans laquelle R¿1? représente phényle éventuellement substitué ou un groupe hétérocyclique; R¿2? représente alkyle inférieur C¿1?-C¿5?; R¿3? représente alkyle C¿2?-C¿8? éventuellement substitué, alkényle ou alkynyle ou cycloalkyle éventuellement substitué; R¿4? représente -A-R¿5?; A représente alkylène C¿2?-C¿8? ou alkénylène C¿2?-C¿8? éventuellement substitué; R¿5? représente pyridyle éventuellement substitué, pyridylcarbonyle ou pipérazinyle.

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