Process for preparing tamsulosin
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United States of America Patent
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Issued Date -
Feb 16, 2006
app pub date -
Aug 11, 2005
filing date -
Aug 16, 2004
priority date (Note) -
Abandoned
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Abstract
The present invention relates to a process for preparing Tamsulosin, an anti-benign prostatic hyperplasia drug, which comprises converting o-ethoxyphenoxyethanol to a corresponding sulfonate, and reacting the sulfonate with (R)-(-)-5-(2-aminopropyl)-2-methoxybenzenesulfonamide by condensation to produce Tamsulosin.
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