14β-dihydroxyestradiol analogues 1a–c, 2a–c, and 3 as possible candidates. By comparing the potency of inhibitory activity against Na+/K+-ATPase between the synthesized candidates and the EDLF, it was found that the proposed structure is not likely to be a true structure of the Inagami–Tamura EDLF.
从头开始合成Inagami-Tamura内源性洋地黄样因子(EDLF)的可能候选物,以验证先前提出的结构。我们的合成方法涉及高度区域选择性和非对映选择性的Mizoroki-Heck反应和Friedel-Crafts型环
脱水,以将甾体四环化合物14构造为通用的
中间体,从而生成7个2,14β-二羟基雌二
醇类似物1a - c,2a - c和3名可能的候选人。通过比较对Na + / K +的抑制活性的效力在合成候选物和EDLF之间的-
ATPase中,发现拟议的结构不太可能是Inagami-Tamura EDLF的真实结构。