Preparation of cabergoline
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United States of America Patent
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-
Jul 3, 2007
Grant Date -
Sep 28, 2006
app pub date -
Apr 7, 2005
filing date -
Mar 23, 2005
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method of preparing cabergoline Form I, comprising forming a solvate including cabergoline and 4-fluorotoluene or 1,3,5-trimethylbenzene and obtaining cabergoline Form I from the solvate. Another aspect of the present invention provides a method for preparing cabergoline Form I comprising dissolving cabergoline in 4-fluorotoluene or 1,3,5-trimethylbenzene and recovering the cabergoline Form 1 polymorph. Cabergoline Form I can then be obtained from the solution, suitably by direct crystallization of Form I or by recovery of a solvate which can be converted to Form I.
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