C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
C07F 9/80 (2006.01) A61K 31/53 (2006.01) A61K 31/555 (2006.01) C07D 251/50 (2006.01)
Patent
CA 2083766
The medicinal product comprises as active prin- ciple a melarsomine hydrochloride preparation having a purity of between 98.5 and 100 %. The process for obtaining this preparation is stated essentially as follows: - step 1, trichlorotriazine (TCT) is converted to diaminochlorotriazine (DCT) in an ammoniacal medium; - step 2, the DCT is converted to melarsen acid hydrochloride (MAH) in the presence of arsanilic acid; - step 3, the MAH is reduced to melarsen oxide dehydrate; and - step 4, the melarsen oxide dehydrate is converted to melarsomine dihydrochloride in the presence of cystea- mine hydrochloride. In each step, a purified preparation of the corresponding intermediate product, or final product in step 4, is obtained.
Etchegaray Jean-Pierre
Floc'h Robert
Lubert Patrick
Mazars Regine Jackie Anne-Marie
Wolf Gerard
Fetherstonhaugh & Co.
Merial Societe Par Actions Simplifiee
Rhone Merieux
LandOfFree
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