PROCESS FOR THE PREPARATION OF DONEPEZIL AND INTERMEDIATE COMPOUNDS THEREOF AS WELL AS HYDRATES OF DONEPEZIL
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United States of America Patent
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Issued Date -
May 28, 2009
app pub date -
Jul 14, 2006
filing date -
Jul 30, 2005
priority date (Note) -
Abandoned
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Abstract
The present invention relates to a new process for the preparation of intermediate compounds useful in the manufacture of donepezil, or a pharmaceutically-acceptable salt thereof, and also relates to processes for preparing donepezil and to the novel intermediates per se. In addition the invention relates to various hydrated forms of donepezil.
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