PROCESS FOR PREPARATION OF PREGABALIN
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United States of America Patent
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Issued Date -
Aug 28, 2014
app pub date -
Feb 27, 2014
filing date -
Feb 28, 2013
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Abandoned
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Abstract
Aspects of the present invention relate to improved process for preparation of (R)(−)-3-(carbamoylmethyl)-5-methylhexanoic acid (R-CMHA) of the formula (II) or its pharmaceutically acceptable salts in the presence of a lewis acid, process for preparation of pregabalin using R-CMHA of the formula (II) or its pharmaceutically acceptable salts prepared according to the present invention and process for preparation of pregabalin with low amount of undesired impurity.
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