The invention relates to processes for preparing 17-alkynyl-7-hydroxy-steroids, such as 17-Ethynyl-10R,13S-dimethyl 2,3,4,7,8R,9S,10,11,12,13,14S,15,16,17-hexadecahydro-1H-cyclopenta[a]phenanthrene-3R,7R,17S-triol (also referred to as 17α-ethynyl-androst-5-ene-3β,7β,17β-triol), that are essentially free of process impurities having binding activity at nuclear estrogen receptors.
本发明涉及制备17-炔基-7-羟基类
固醇的过程,例如17-
乙炔基-10R,13S-二
甲基2,3,4,7,8R,9S,10,11,12,13,14S,15,16,17-
十六烷基-1H-环戊[a]
苯并[3R,7R,17S]-三醇(也称为17α-
乙炔基-雄甾-5-
烯-3β,7β,17β-三醇),其基本上不含有在核
雌激素受体上具有结合活性的过程
杂质。