Revisiting the 7,8-cis-vitamin D3 derivatives: synthesis, evaluating the biological activity, and study of the binding configuration
作者:Daisuke Sawada、Shinji Kakuda、Midori Kamimura-Takimoto、Akiko Takeuchi、Yotaro Matsumoto、Atsushi Kittaka
DOI:10.1016/j.tet.2016.03.081
日期:2016.6
disclosed that 14-epi-19-nortachysterol showed the unprecedented binding configuration in human vitamin D receptor (hVDR), that is, 5,6- and 7,8-s-trans configuration. However, this configuration is variable because of the rotation at the single bond between C7 and C8. For the precise discussion of the 7,8-s-trans configuration, we designed and synthesized the 7,8-cis-locked skeleton of vitamin D3 derivatives
四-7,8-顺式-1α,25-二羟基维生素d 3个衍生物,7,8-顺-和7,8-顺式-14-外延1α,25-二羟基-19-去甲维生素d 3以及7,8合成了-顺式和7,8-顺式-14 - epi -1α,25-二羟基维生素D 3,并对其化学稳定性进行了表征。在我们以前的工作中,我们透露,14-外延-19-nortachysterol显示,人体维生素d受体(hVDR),也就是5,6-和7,8-前所未有的绑定配置小号-反式组态。但是,由于在C7和C8之间的单键处旋转,因此此配置可变。对于-7,8-的精确讨论小号-反式构型,我们设计并合成的7,8-顺式维生素d -locked骨架3层的衍生物。在四个类似物中,19-nor衍生物在环境温度下稳定,并研究了它们的hVDR结合亲和力和hVDR复合物的共晶体分析。具有三烯系统的其他衍生物被异构化为相应的维生素原D 3和维生素D 3。