Aliphatic nitrogenous five-membered ring compounds
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United States of America Patent
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Feb 1, 2005
Grant Date -
Apr 1, 2004
app pub date -
Apr 4, 2003
filing date -
Oct 6, 2000
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Abstract
The present invention is to provide an aliphatic nitrogen-containing 5-membered ring compound represented by the formula [I]: ##STR1## wherein A represents --CH.sub.2 -- or --S--, R.sup.1 represents hydrogen atom, a lower alkyl group, a hydroxy lower alkyl group or a lower alkoxy lower alkyl group, X represents --N(R.sup.3)--, --O-- or --CO--, where R.sup.3 represents hydrogen atom or a lower alkyl group, and R.sup.2 represents (1) a cyclic group which may be substituted, or (2) an amino group which may be substituted, or a pharmaceutically acceptable salt thereof, a method for preparing the above-mentioned compound and a pharmaceutical composition comprising the above-mentioned compound as an effective ingredient.
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