US6933393B2 - Process for the synthesis of 5-(4-fluorophenyl) | 寵物協尋網
Publicationnumber:US6933393B2;US6933393B2US10/348,727US34872703AUS6933393B2US...US11/109,396DivisionUS7183408B2(en),2001-01-09,2005-04-19 ...
This application is a divisional application of U.S. Ser. No. 10/198,682, filed Jul. 18, 2002, now U.S. Pat. No. 6,545,153 which is a divisional application of U.S. Ser. No. 10/015,558, filed Dec. 17, 2001, now U.S. Pat. No. 6,476,235 B2, which claims benefit of Provisional Application U.S. Ser. No. 60/260,505, filed Jan. 9, 2001.
FIELD OF THE INVENTIONAn improved synthesis for the preparation of 5-(4-fluorophenyl)-1-[2-((2R,4R)-4-hydroxy-6-oxo-tetrahydro-pyran-2-yl)-ethyl]-2-isopropyl-4-phenyl-1H-pyrrole-3-carboxylic acid phenylamide is described where methyl cyanoacetate is converted in eight operations or fewer to the desired product, as well as other valuable intermediates used in the process.
BACKGROUND OF THE INVENTION5-(4-Fluorophenyl)-1-[2-((2R,4R)-4-hydroxy-6-oxo-tetrahydro-pyran-2-yl)-ethyl]-2-isopropyl-4-phenyl-1H-pyrrole-3-carboxylic acid phenylamide is a valuable intermediate in the synthe...
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ethyl]-2-isopropyl-4-phenyl-1H-pyrrole | 寵物協尋網
US6933393B2 - Process for the synthesis of 5-(4-fluorophenyl) | 寵物協尋網
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