Certain novel sterol derivatives can be used for regulating the meiosis in oocytes and in male germ cells.
某些新型甾醇衍生物可以用于调节卵母细胞和雄性生殖细胞的减数分裂。
1-.alpha.-hydroxy vitamin D compounds and process for preparing same
申请人:——
公开号:US04670190A1
公开(公告)日:1987-06-02
The invention provides novel 1.alpha.-hydroxy vitamin D compounds and a method for their preparation from 1.alpha.-hydroxy-25-hydrogen cholesta-5,7-dienes by irradiation and isomerization techniques. The invention also includes the said 1.alpha.-hydroxy-25-hydrogen-cholesta-5,7-dienes and the corresponding cholest-5-enes. The new compounds may be obtained in a crystalline form substantially free from isomeric or other impurities arising from manufacture.