Process for the preparation of novel pyrimido quinoxalines...

C - Chemistry – Metallurgy – 07 – D

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260/242.01

C07D 487/04 (2006.01)

Patent

CA 1190226

PRECIS DE LA DIVULGATION: L'invention concerne un procédé pour préparer de nouvelles pyrimido quinoxalines, ainsi que leurs sels, ré- pondant à la formule: (I) Image où R est un hydrogène, un alcoyle (1 à 5 carbones), -CO-RA où RA est un alcoyle (1 à 6 carbones), un cycloalcoyle (3 à 6 carbones), un phényle éventuellement substitué par un ou plusieurs halogènes, par un ou plusieurs alcoxy ( 1 à 3 carbones), par un ou plusieurs nitro, ou RA est un alcoxy (1 à 5 carbones), ou R est un groupement -CHO ou -CO-NH-C6H5, et R1 est un alcoxy (1 à 5 carbones). Les composés de formule I sont doués de remarquables propriétés antiallergi- ques.

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