Process for preparation of 2-methyl-2′-phenylpropionic acid derivatives and novel intermediate compounds
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United States of America Patent
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Jan 21, 2014
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May 9, 2013
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Dec 26, 2012
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Feb 12, 2008
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Abstract
The present invention relates to a process for preparing 2-methyl-2′-phenylpropionic acid derivatives showing antihistamine activity in more simplified way, intermediate compounds and their preparation processes used therefor. According to the present invention, pharmaceutically useful 2-methyl-2′-phenylpropionic acid derivatives can be prepared with high yield and purity on industrial scale.
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