Process for preparing (3R)-2′-(4-bromo-2-fluorobenzyl)spiro-[pyrrolidine-3,4′(1′H)-pyrrolo[1,2-A]pyrazine]-1′,2,3′,5(2H′)-tetraone
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United States of America Patent
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Apr 9, 2013
Grant Date -
Jan 12, 2012
app pub date -
Sep 22, 2011
filing date -
Jul 7, 2006
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Abstract
The present invention is a process for preparing (3R)-2′-(4-bromo-2-fluorobenzyl)spiro-[pyrrolidine-3,4′(1′H)-pyrrolo[1,2-a]pyrazine]-1′,2,3′,5(2H′)-tetraone, comprising, for example, the following steps:
- (1) reacting a compound of the formula (III)
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