Amino derivatives of pyrazolo [1,5-a] s. triazine, processes...

Details Amino derivatives of pyrazolo [1,5-a] s. triazine, processes... Amino derivatives of pyrazolo [1,5-a] s. triazine, processes...

C - Chemistry, Metallurgy

07

D

260/249.87

C07D 487/04 (2006.01)

Patent

CA 1101422

- 21 - NEW AMINO DERIVATIVES OF PYRAZOLO [1.5-A]S.TRIAZINE, PROCESSES FOR THEIR PREPARATION AND THEIR THERAPEUTIC APPLICATIONS. ABSTRACT OF THE DISCLOSURE. This invention relates to compounds having the general formula : Image (I) in which : R1 represents a hydrogen atom or a (C1-4)alkyl radical, R2 represents a hydrogen atom, a (C1-4)alkyl radical, a (C2-4)alkenyl radical, a (C1-4)alkoxy-(C1-4) alkyl radical or a tetrahydrofuryl- or tetrahydropyranyl-(C1-4)alkyl radical, R3 represents a hydrogen atom or a (C1-4)alkyl radical, and R4 represents a hydrogen atom or a (C1-4)alkyl radical, and their pharmaceutically acceptable acid addition salts. Said compounds have valuable bronchodilator properties.

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