Process for preparing guggulsterones and guggulsterol

Details Process for preparing guggulsterones and guggulsterol Process for preparing guggulsterones and guggulsterol

C - Chemistry, Metallurgy

07

J

C07J 13/00 (2006.01) C07J 1/00 (2006.01) C07J 75/00 (2006.01)

Patent

CA 2523369

The present invention relates to a method for selective preparing 4,17 (20)-E- pregnadiene-3,16-dione (E-guggulsterone) of the formula (III) and 4,17 (20)-Z- pregnadiene-3,16-dione (Z-guggulsterone) of the formula (IV) having an effect of lowering the elevated low density lipoprotein (LDL) and high levels of the cholesterol effectively, and elevating the low levels of the high density lipoprotein (HDL) from a easy-available steroid of the following formula (I). Also, the present invention provides a method for preparation of the compound of the above formula (II).

L'invention porte sur un procédé de préparation sélective de 4,17 (20)-E-pregnadiène-3,16-dione (E-guggulstérone) de formule (III) et de 4,17 (20)-Z-pregnadiène-3,16-dione (Z-guggulstérone) de formule (IV), ayant pour effet d'abaisser efficacement les niveaux trop élevés de lipoprotéines de faible densité (LDL) et de cholestérol, et d'élever les niveaux trop bas de lipoprotéines de faible densité (HDL), à partir d'un stéroïde facilement disponible de formule (I). L'invention porte également un procédé de préparation du composé de formule (II).¿ ?

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