The present invention relates to a process for preparing (15α,16α,17β)-Estra-1,3,5(10)-triene-3,15,16,17-tetrol, also known as Estetrol, having the formula shown below: (I)
                            本发明涉及一种制备(15α,16α,17β)-Estra-1,3,5(10)-
三烯-3,15,16,17-四醇,也称为Estetrol的过程,其
化学式如下所示:(I)