2-phenylazulene derivatives and a manufacturing method of these compounds
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United States of America Patent
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Dec 1, 1998
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N/A
app pub date -
Dec 2, 1997
filing date -
Dec 2, 1996
priority date (Note) -
Expired
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Abstract
A series of new azulene derivatives are disclosed, which are represented by the following formula; ##STR1## wherein: R.sub.1 is hydrogen atom, lower alkoxycarbonyl group, carboxy group, halogen atom, lower alkyl group, phenyl group or lower alkanoyl group; R.sub.2, R.sub.3 and R.sub.4 are hydrogen atom, lower alkyl group, lower alkoxy group or halogen atom; X is lower alkyl group or amino group. The compounds of the present invention are useful for treatment of inflammation.
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