C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
167/238, 260/298
C07D 487/04 (2006.01) A61K 31/415 (2006.01)
Patent
CA 1327586
ABSTRACT OF THE DISCLOSURE The present invention is directed to a group of meth- ylated tetrahydro cyclohepta[1,2-c:4,3-c']dipyrazoles and benzo[1,2-c:4,3-c']dipyrazoles useful as bronchodilators. The compounds are prepared by the reaction of an appro- priate hydrazine with an appropriate 1,3-diketone or with a compound that is chemically equivalent to a 1,3-diketone.
557074
Le Tourneau Michael E.
Peet Norton P.
Merrell Dow Pharmaceuticals Inc.
Osler Hoskin & Harcourt Llp
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