Prophylatic and/or therapeutic agents for chronic musculoskeletal pain
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United States of America Patent
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app pub date -
Mar 30, 2005
filing date -
Mar 30, 2004
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Abstract
A prophylactic and/or therapeutic agent for diseases accompanied by chronic musculoskeletal pain comprising as an active ingredient a compound having an adenosine A.sub.2A receptor antagonistic action, for example, represented by the following formula (I) (wherein R.sup.1, R.sup.2 and R.sup.3 are the same or different, each representing a hydrogen atom, lower alkyl, lower alkenyl or lower alkynyl; R.sup.4 represents cycloalkyl, --(CH.sub.2).sub.n--R.sup.5 or the following formula (II); and X.sup.1 and X.sup.2 are the same or different, each representing an oxygen atom or a sulfur atom) or a pharmaceutically acceptable salt thereof.
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