Abstract
Structural optimization of pyrazolopyridine derivative 2, which is one of the newly discovered chemical leads for PDE4 inhibitors from our in-house library, was carried out successfully. The process of discovery of new orally active PDE4 inhibitors, which are expected to possess therapeutic potential, is presented and their structure-activity relationships are discussed.
MeSH terms
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3',5'-Cyclic-AMP Phosphodiesterases / antagonists & inhibitors*
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3',5'-Cyclic-AMP Phosphodiesterases / metabolism
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Administration, Oral
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Animals
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Bronchoconstriction / drug effects
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Bronchoconstriction / physiology
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Bronchoconstrictor Agents / administration & dosage
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Bronchoconstrictor Agents / therapeutic use
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Cyclic Nucleotide Phosphodiesterases, Type 4
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Ferrets
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Gastric Emptying / drug effects
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Guinea Pigs
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Humans
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Phosphodiesterase Inhibitors / administration & dosage*
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Phosphodiesterase Inhibitors / chemistry
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Phosphodiesterase Inhibitors / therapeutic use*
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Pyrazoles / administration & dosage
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Pyrazoles / chemistry
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Pyrazoles / therapeutic use
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Pyridines / administration & dosage
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Pyridines / chemistry
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Pyridines / therapeutic use
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Rats
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Tumor Necrosis Factor-alpha / antagonists & inhibitors
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Tumor Necrosis Factor-alpha / biosynthesis
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Vomiting / chemically induced
Substances
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Bronchoconstrictor Agents
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Phosphodiesterase Inhibitors
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Pyrazoles
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Pyridines
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Tumor Necrosis Factor-alpha
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pyrazolopyridine
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3',5'-Cyclic-AMP Phosphodiesterases
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Cyclic Nucleotide Phosphodiesterases, Type 4