Chemical synthesis of tetracyclic terpenes and evaluation of antagonistic activity on endothelin-A receptors and voltage-gated calcium channels
作者:Jianyu Lu、Angelo Aguilar、Bende Zou、Weier Bao、Serkan Koldas、Aibin Shi、John Desper、Philine Wangemann、Xinmin Simon Xie、Duy H. Hua
DOI:10.1016/j.bmc.2015.06.055
日期:2015.9
A class of tetracyclic terpenes was synthesized and evaluated for antagonistic activity of endothelin-1 (ET-1) induced vasoconstriction and inhibitory activity of voltage-activated Ca2+ channels. Three repeated Robinson annulation reactions were utilized to construct the tetracyclic molecules. A stereoselective reductive Robinson annulation was discovered for the formation of optically pure tricyclic
合成一类四环萜烯并评估内皮素-1(ET-1)诱导的血管收缩的拮抗活性和电压激活的Ca 2+通道的抑制活性。利用三个重复的鲁滨逊环化反应来构建四环分子。发现了立体选择性还原罗宾逊环空法用于形成光学纯的三环萜烯。发现向四环烯酮(-)- 18的受阻α面立体选择性加成氰化物,随后转化为醛官能受到双环半亚胺(-)- 4的形成的影响。。六个选定的合成四环萜烯在ET-1诱导的沙鼠螺旋mod动脉中的血管收缩中表现出抑制活性,推定的亲和力常数在93至319 nM之间。此外,对一种化合物(-)- 3进行了进一步评估,发现在相似浓度下,其抑制了电压激活的Ca 2+电流,但不影响背根神经节细胞中的Na +或K +电流。这些观察结果暗示了双重作用机制。总之,四环萜烯代表了一类新型的命中分子,用于发现治疗肺动脉高压和血管相关疾病的新药物。