Furoisoquinoline derivative and use thereof
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
May 18, 2006
app pub date -
Jul 24, 2003
filing date -
Jul 26, 2002
priority date (Note) -
Abandoned
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Abstract
The present invention provides a compound represented by the formula wherein A represents (1) a bond, (2) a group represented by the formula --CR.sup.a.dbd.CR.sup.b-- (R.sup.a and R.sup.b each represent a hydrogen atom or C.sub.1-6 alkyl) and the like; R.sup.1 represents (1) cyano or (2) an optionally esterified or amidated carboxyl group; R.sup.2 represents (1) a hydrogen atom, (2) an optionally substituted hydroxy group, (3) an optionally substituted amino group and the like; R.sup.3 and R.sup.4 each represent a hydrogen atom and the like; R.sup.5 represents a hydrogen atom and the like; R.sup.6 represents an optionally substituted hydroxy group and the like; R.sup.7 and R.sup.8 each represent an optionally substituted hydrocarbon group and the like; R.sup.9 and R.sup.10 each represent (1) a hydrogen atom and the like; Y represents an optionally substituted methylene group; and n represents 0 or 1, or a salt thereof, which has an excellent phosphodiesterase IV inhibiting action.
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