5). The binding affinity of 1-8 to the calf uterine E2R was measured relative to that of [3H]E2 by a competitive binding assay. Compounds 1 and 5 showed relative binding affinity (RBA) values exceeding those of HES and MetaHES, respectively. All other derivatives showed RBA values smaller than the corresponding parent compounds. The intrinsic activity was monitored in terms of uterotrophic and antiuterotrophic
在1,2-二烷基-1,2-双(
4-羟苯基)
乙烷雌激素的
己烯雌酚(乙基,HES)和octestrol(正丙基,OCES)的α或β位置对称引入
CH3取代基的影响[异丙基(1),叔丁基(2),仲丁基(3),异丁基(4)]和1,2-二烷基-1,2-二-(3-羟苯基)
乙烷抗
雌激素间
己雌酚(乙基,MetaHES )和
间苯三酚(n-丙基,MetaOCES)[异丙基(5),叔丁基(6),仲丁基(7),异丁基(8)]对
雌二醇受体(E2R)的结合亲和力和内在活性。化合物1-8的合成是通过以下方式完成的:(a)将相应的α-烷基
苄醇与TiCl3 / LiAlH4还原偶联,并分离内消旋非对映异构体(化合物2-4、7和8),(b)α-叔丁基-3-甲氧基苄基
氯与CoCl2 / EtMgCl并分离出内消旋结构异构体(6),以及(c)异丙基苯基酮与TiCl4 / Zn并随后氢化相应的顺式-己基- 3-烯(化合物1和5)。通过竞争性结合测定法相对于[3H]