申请人:Kang Heonjoong
公开号:US20070055072A1
公开(公告)日:2007-03-08
The present invention relates to a method for selective preparing 4,17 (20)-E-pregnadiene-3,16-dione (E-guggul-sterone) 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).
本发明涉及一种选择性制备公麻酮-3,16-二酮(E-古格尔甾酮)式(III)和4,17(20)-Z-孕二烯-3,16-二酮(Z-古格尔甾酮)式(IV)的方法,该方法使用易得的以下类固醇,具有有效降低升高的低密度脂蛋白(LDL)和胆固醇水平,并提高低水平的高密度脂蛋白(HDL)的作用。此外,本发明还提供了制备上述式(II)化合物的方法。