Heterocyclic compounds and their preparation and use
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United States of America Patent
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Jul 8, 1997
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app pub date -
May 25, 1995
filing date -
Feb 2, 1993
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Abstract
The present invention relates to 9H-indeno[1,2-b]pyrazin-3(4H)-ones and 9H-indeno[1,2-b]pyrazine-2,3(1H,4H)-diones or tautomeric forms thereof which are useful in treating neurological and psychiatric diseases based on the antagonism of the glycine binding site on the NMDA receptor complex.
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