Pyrazolopyrimidinone compound and imidazo triazone compound for treating erectile dysfunction
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United States of America Patent
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Dec 29, 2015
Grant Date -
Jan 16, 2014
app pub date -
Jan 20, 2012
filing date -
Jan 21, 2011
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Abstract
Disclosed are selective phosphodiesterase inhibitor compounds shown in formula (I) or (II) for treating Erectile Dysfunction, the pharmaceutically acceptable salts and configurational isomers thereof. In the formula, the substituents R1, R2, R3, R4 and R5 are defined as in the specification. Also disclosed are methods for preparing same, and a medical composition comprising compounds of formula (I) or (II), and the use of these compounds for preparing a drug treating or preventing male Erectile Dysfunction.
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