A - Human Necessities – 61 – K
Patent
A - Human Necessities
61
K
167/202, 167/310
A61K 31/70 (2006.01) C07H 19/20 (2006.01)
Patent
CA 1198678
PROCESS FOR TREATING PROLIFERATIVE SKIN DISEASES USING CERTAIN 6, 8-SUBSTITUTED RIBOFURANOSYLPURINE -3',5'- CYCLIC PHOSPHATES ABSTRACT Proliferative skin diseases such as psoriasis are treated by topically administering cAMP analogs of the following formula to the afflicted skin site at a dose that preferentially and significantly activates type II protein kinase: Image where: R6 is: (i) -NR1 R2 where R1 and R2 are independently selected from the group consisting of hydrogen, alkyl of 1 to 5 carbon atoms, and cyclopentyl or are joined together with the nitrogen atom to form a hetrocyclic group having 4 to 5, inclusive, annular carbon atoms with the proviso that the total number of carbon atoms in the -NR1 R2 group is 4 or 5, or (ii) -XR where X is a chalcogen atom of atomic number 8 or 16 and R is alkyl of 4 or 5 carbon atoms, R8 is: (i) -X-(CH2)n R3 where X is defined previously, n is an integer in the range of 1 to 3, inclusive, R3 is hydrogen, alkyl of 1 to 7 carbon atoms, or phenyl substituted with 0 to 1, inclusive, nitro, halo of atomic number 9 to 35, inclusive, methoxy; hydroxy or methyl, or (ii) -NR4 R5 wherein R4 and R5 are independently selected from the group consisting of hydrogen, alkyl of 1 to 8 carbon atoms, and phenalkyl of 7 to 9 carbon atoms with the provisos that only one of R4 and R5 may be hydrogen and the total number of carbon atoms in the -NR4, R5 group is in the range of 1 to 9, inclusive, and ? is hydrogen, an alkali metal cation or ammonium.
406453
Miller Jon P.
Zmolek Wesley W.
Gowling Lafleur Henderson Llp
Sri International
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