Batrachotoxin Analogues, Compositions, Uses, and Preparation Thereof
申请人:Du Bois Justin
公开号:US20140171410A1
公开(公告)日:2014-06-19
Compounds relating to batrachotoxin are provided, in particular analogues that modulate the activity of sodium channels. Also provided are pharmaceutical compositions comprising compounds of the invention and a pharmaceutically acceptable carrier, including vehicles that modulate transdermal permeation of the compound. The subject compounds are useful in treatments, including treatments to reduce neuronal activity or to bring about muscular relaxation. The compounds also find use in the treatment of subjects suffering from a voltage-gated sodium channel-enhanced ailment or from pain. Further methods are provided for the preparation of the batrachotoxin-related compounds.
Differential effects of modified batrachotoxins on voltage-gated sodium channel fast and slow inactivation
作者:Tim M.G. MacKenzie、Fayal Abderemane-Ali、Catherine E. Garrison、Daniel L. Minor、J. Du Bois
DOI:10.1016/j.chembiol.2021.12.003
日期:2022.4
agents act as allostericmodulators of channel activity and serve as powerful chemical tools for understanding channel function. Herein, we detail studies with batrachotoxin (BTX), a potent steroidal amine, and three ester derivatives prepared through de novo synthesis against recombinant NaV subtypes (rNaV1.4 and hNaV1.5). Two of these compounds, BTX-B and BTX-cHx, are functionally equivalent to BTX
电压门控钠通道 (Na V s) 是许多急性毒物的目标。许多这些药物充当通道活性的变构调节剂,并作为了解通道功能的强大化学工具。在此,我们详细研究了蝙蝠毒素 (BTX)、一种强效甾胺和通过从头合成制备的三种酯衍生物,针对重组 Na V亚型(rNa V 1.4 和 hNa V 1.5)。其中两种化合物 BTX-B 和 BTX -c Hx 在功能上与 BTX 等效,可超极化通道激活并阻断快速和慢速失活。 BTX-yne(一种 C20 -n-庚炔酸酯)是一种明显的异常值,可以消除快速失活,但不能消除缓慢失活。这一特性使 BTX-yne 作为分离失活过程的独特试剂而区别于其他 Na V调节剂。这些发现得到了对缺乏快速失活门的细菌 Na V (BacNa V ) 的功能研究的支持。 BTX-yne 的出现将推动未来旨在了解 Na V门控机制和设计 Na V活性变构调节剂的努力。