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US RE34,653 EGranted
Heterocyclic spiro compounds and methods for preparing the same
AssigneeYamanouchi Pharmaceutical Co., Ltd.
InventorsShin-ichi Tsukamoto, Hitoshi Nagaoka, Shinji Usuda, Masatomi Harada, Toshinari Tamura
Life of this patent
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Abstract
Heterocyclic spiro compounds represented by the following general formula and salts thereof: ##STR1## The above compounds act upon muscarinic acetylcholine receptors, thereby activating the acetylcholine nervous functions in the central nervous system.
Claims2
2,8-Dimethyl-3-methylene-1-oxa-8-azaspiro[4,5]decane or a pharmaceutically acceptable salt thereof .
2-Ethyl-8-methyl-1-oxa-8-azaspiro[4,5]decane-3-one or pharmaceutically acceptable salt thereof .
Dependencies are inferred from the claim text.