Process for the preparation of new derivatives of...

C - Chemistry – Metallurgy – 07 – D

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260/277.1

C07D 215/56 (2006.01)

Patent

CA 1055499

PRECIS DE LA DIVULGATION: L'invention a pour objet un procédé de préparation des composés de formule I: Image (I) dans laquelle R1 qui se trouve en position 7 ou 8 représente un atome d'halogène, un radical trifluorométhyle, trifluorométhyl thio, trifluorométhoxy, R3 représente un atome d'hydrogène ou un radical alcoyle renfermant de 1 à 4 atomes de carbone, et R4 représente un radical hétérocyclique choisi parmi les radicaux thiazolyle, pyridinyle ou oxazolyle, ainsi que de leurs sels d'addition avec les acides. Les produits obtenus ont des propriétés analgésiques .

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