Schistosomicidal compositions
AssigneePfizer Inc.
InventorsKeith W. Brammer, John R. Shaw
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AssigneePfizer Inc.
InventorsKeith W. Brammer, John R. Shaw
Estimating the term…
Certain novel schistosomicidal pharmaceutical compositions are disclosed. These compositions involve the concomitant use of two different organic chemical compounds each chosen from a separate class of known schistosomicidal agents. One class of agents involves certain known 2-aminoalkyl-7-substituted-1,2,3,4-tetrahydroquinolines (A), while the other class is primarily concerned with a series of known 2-acyl-4-oxo-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2,1a]isoquinoline derivatives (B). A preferred embodiment involves the use of dl-6-hydroxymethyl-2-isopropylaminomethyl-7-nitro-1,2,3,4-tetrahydroquinol ine (A) in conjunction with 2-cyclohexylcarbonyl-4-oxo-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2,1a]isoqui noline (B). Various methods for administering these compounds in combination and/or in a concomitant manner are provided.
A schistosomicidal composition comprising a compound (A) which is dl-6-hydroxymethyl-2-isopropylaminomethyl-7-nitro-1,2,3,4-tetrahydroquinol ine or a pharmaceutically acceptable acid addition salt thereof and a compound (B) which is 2-cyclohexylcarbonyl-4-oxo-1,2,3,6,7,11b-hexahydro-4H-pyrazino [2,1a]isoquinoline wherein the weight ratio of the free base of compound (A) to the free base of compound (B) is in the range of from about 1.0:0.5 up to about 1.0:5.0.
Dependencies are inferred from the claim text.