Process for the preparation of pleuromutilins
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United States of America Patent
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Dec 18, 2012
Grant Date -
Oct 8, 2009
app pub date -
Oct 3, 2007
filing date -
Oct 5, 2006
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Abstract
A process for the preparation of 14-O-[(N-(3-methyl-2-amino-butyryl-piperidinyl)sulfanyl) acetyl]mutilins of formula (I) feasible for large-scale production of high purity products, and wherein the carbon atom at the piperidine ring attached to the sulphur atom is either in the (S)-configuration or in the (R)-configuration, and a new crystalline form of 14-O-[(N-3-methyl-2-(R)-amino-butyryl-piperidine-3(S)-yl)sulfanyl)acetyl]mutilin-hydrochloride.
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