Mono-- or diketone tetracyclic derivatives and therapeutical uses thereof
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United States of America Patent
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Nov 9, 1999
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N/A
app pub date -
Sep 21, 1998
filing date -
Dec 12, 1995
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Expired
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Abstract
Invention concerning the therapeutic use of tetracyclic derivatives and their pharmaceutically acceptable salts having the following general formula: ##STR1## in which, independently of the other: X is a carbon or nitrogen atom, T is a carbon or nitrogen atom, L is an oxygen atom or ketone functional protective group, R.sub.1 is an atom of hydrogen, an atom of halogen, or a C.sub.1 to C.sub.5 alkyl radical, R.sub.2 is a hydrogen atom, a halogen atom, a nitro radical, or a C.sub.1 to C.sub.5 alkyl radical, n and m are equal to 0 or to 1, but not independently of the other, so that if n is equal to 1, then m is equal to 0, and if n is equal to 0, then m is equal to 1.
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