Process for epimerization at c.sub.6 of 3,4,5,6-...

Details Process for epimerization at c.sub.6 of 3,4,5,6-... Process for epimerization at c.sub.6 of 3,4,5,6-...

C - Chemistry, Metallurgy

07

D

260/357.3, 260/3

C07D 309/30 (2006.01) C07F 7/18 (2006.01)

Patent

CA 1228591

TITLE OF THE INVENTION PROCESS FOR EPIMERIZATION AT C6 OF 3,4,5,6-TETRA- HYDRO-2H-PYRAN-2-ONE ABSTRACT OF THE INVENTION An external bond at the 6-position of a 3,4,5,6-tetrahydro-2H-pyran-2-one, as found in the 3-hydroxy-3-methylglutaryl - coenzyme A reductase inhibitors, is readily epimerized by treating an amide of the corresponding hydroxy acid with a sulfonyl chloride reagent.

483265

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