(Example: 6-(2-ethyl-7-methoxy-pyrazolo[1,5-a]pyridine-4-yl)-5-methyl-4, 5-dihydro-3(2H)-pyridazinone)."/>
Pyrazolopyridine-4-yl pyridazinone derivatives and addition salts thereof, and PDE inhibitors comprising the same derivatives or salts as active ingredient
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Pyrazolopyridine-4-yl pyridazinone derivatives and addition salts thereof, and PDE inhibitors comprising the same derivatives or salts as active ingredient
Pyrazolopyridine-4-yl pyridazinone derivatives and addition salts thereof, and PDE inhibitors comprising the same derivatives or salts as active ingredient
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机译：吡唑并吡啶-4-基哒嗪酮衍生物及其加成盐，以及包含相同衍生物或盐作为有效成分的PDE抑制剂
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摘要
Novel pyrazolopyridine-4-yl pyridazinone derivatives serve as phosphodiesterase inhibitors and are useful compounds for use in pharmaceutical products.;Specifically, the compounds of the present invention are pyrazolopyridine-4-yl pyridazinone derivatives represented by the following general formula (1):; (Example: 6-(2-ethyl-7-methoxy-pyrazolo[1,5-a]pyridine-4-yl)-5-methyl-4, 5-dihydro-3(2H)-pyridazinone).
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