Spiro compounds containing five-membered rings
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United States of America Patent
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Jul 9, 1996
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Jul 20, 1993
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Apr 10, 1990
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Abstract
Compounds useful for treating diseases of the central or peripheral nervous system in mammals have formulae I-XIII: ##STR1## wherein ring A or A' together with the spiro-carbon atom constitutes a bridged or unbridged ring containing one or two ring nitrogen atoms; and the other symbols have specified values, subject to certain conditions.
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